Write an essay about the dangers of Child Labour. ( 250 - 300 words).
Answers
Explanation:
Child labour is the working of children of ages under 18 years old for number of hours that contrast their body growth and affects their health badly. This research is studying the affects of child labour on development of countries and trying to prove that the child labour is cause of delaying of some countries due to its effects on education. To prove that an interviews with labour children’s and their families have been made. More over a lot of statistics have been gathered by me of child labour in several countries from uniceff and international labour organization in addition to world health organization .the results which have been indicated is that most of the child labour found around the world is in the developing countries because children leave schools to work so in the future they become untrained adult can work.
i-Introduction
Child labour is the working of young children under the age of 18 years old for large number of hours and in unsuitable jobs .It was noted that The Child labour it is the work of children in un suitable ages for unsuitable work hours or under unhealthy conditions and under certain circumstances that contrast with their body growth and their education and also their ability for creations (February 2, 1992, The Child Labour Situation) . also it was conducted that child labour is breaking of human rights which obstacle there psychological life and their physical activities (international labour organization ). Further more the child labour is mainly found in the developing countries and in Africa and Asia . some statistics The high percentage of child labor occurs mainly in mali with percentage of 54.5 Burkina Fasowith 51 percent, Niger and Uganda with 45 percent and Kenya with 4L3 percent, the report said.Bangladesh had 30.1 percent, Nigeria 25.8 Haiti 25, Turkey 24, Ivory Coast 20.5, Pakistan 17.7 percent, Brazil 16.1 , India 14.4. China U.6, and Egypt 11.2 percent. (INTERNATIONAL JOURNAL OF HUMANITIES AND PEACE. 1997). After all of that the aim of my study is to show the bad effects of child labour .moreover if the child labour has effects on developing countries in delay in development.
ii-Literature review
a-The meaning of child labour
It was noted that The Child labour is the work of children at unsuitable ages for unsuitable work hours or under unhealthy conditions and under certain circumstances that contrast with their body growth and their education .also their ability for creations (February 2, 1992, The Child Labour Situation) . moreover it was conducted that child labour is the breaking of human rights which obstacle there psychological life and their physical activities (international labour organization ).in addition to that there is a positive meaning of child labour i.e. the children can work with their parents in home ,help in family work or get their pocket money from working in the weekends and in the summer vacations (international labour organization ).
b-Causes of child labour :
there are many causes of child labour the main cause for it is poverty of the families . The international labour organization noted that the poverty of the families is the main cause of child labour because the children have tow work to get money which help in keeping their life and the life of their families . in addition to that the families are not capable to pays funds of the schools . also the children who are living in slums and villages which don’t have any educational facilities so they work .more over the work market are demanding more children to worm because they take low salaries and they are less trouble maker than adults for the employer . furthermore it was noted that The children works due to the poverty of their families so they need income to overcome the challenges of the life as a result they need to send their children to the work to get them money. In the other hand they cant send them to the working fields that give high wages as exportation because of restricting laws so they must send them to works of low wages as agriculture or servings fields. They have to work more hours to increase their income even if some of their brothers or sisters in school their parents get them out and send them to work field( number cruncher Putting children to work,By Stephen Nickell,september 2009 · prospect · 15). In the other hand not all the causes are economic causes some of the are from family where children work with their families in farms , shops and different hand made industries said international labour organization .
Answer: Right now roughly 152 million children are victims of child labour, in over 179 countries across the world. Though many governments have laws in place to protect their youth, much of the world is still suffering from a lack of healthy jurisdiction.
Child labour is defined as work that deprives a person of their childhood. Generally, the legal age at which you are allowed to begin working is 15 - 18. Bolivia has the world's lowest legal minimum age requirement, at just 10 years old. However, the majoroty child labour victims are as young as 5 - 11 years of age.
Child labour has be proven detrimental to the physical health, mental health, and development in youth. Often accompanied with depression, drug dependency, premature aging, malnutrition, etc. We have only just brushed the surface of the true depth and impact this issue has on the individual affected. Time is also a limited resource, and it is estimated $176 billion is lost in potential future wages when children engage in labour instead of completing their education. This goes without mentioning the percentage of deaths among child workers.
Most jobs associated with child labour are extremely harmful. Hazardous conditions occur more frequently, and the risk of being exposed to forced labour, debt bondage, serfdom, and illicit activities such as prostXXXitution, porXXography, or drXXug trafficking greaten significantly. It is estimated that over 1 million children involved in child labour are trafficked globally per year.
Overall, Child labour is a pressing issue affecting hundreds of thousands of lives daily across the world. With the extreme conditions, psychological and physical damage, and other risks associated with child labour, it is hard to deny that it is a violation of human rights.
Luckily there are things you can do to help combat this pressing issue. Organizations like The Bureau of International Labour Affairs (ILAB) and World Vision are working hard and fast to reduce the number of children affected, and to strengthen national policies to protect them. There is still work to do, and it's up to American citizens like us to push for more support by contacting our members of congress and raising our voice on behalf of the millions of children suffering worldwide.
Explanation:
Some of the words are labeled innapropriate by this website, remove the X's from them
Related Questions
Fruit trees in a forest are an important habitat for a bird species and were historically a major source of food for a rodent species. Over time, the rodent species shifted their feeding behavior from fruit trees to nut trees. As rodent behavior changed, the density of fruit trees decreased, which caused significant decreases to the bird population. What kind of effect did the change in rodents exert on bird population size?
Answers
Answer:
The bird population might have to migrate in search for food or may decline in numbers.
Explanation:
This is a concept of primary producers that is trees and secondary consumers that is mouse and bids. Due to the decline in raw material available the mouse population declines and this also affects the secondary consumers that are birds of prey like hawks, owls etc.Which part of bone marrow is
fatty and acts as a place for
storage?
A. Red
B. Yellow
C. Pink
D. White
Answers
Answer: the answer is B
Explanation: Yellow bone marrow is involved in the storage of fats. The fats in yellow bone marrow are stored in cells called adipocytes.
Which of the following is NOT part of the first line in immune defense? *
Mucus
Sweat
Tears
Antibodies
Skin
Answers
Answer:
Antibodies
Explanation:
Skin, tears, sweat and mucus, are all first line of defense.
The part that is not the first line of immune defense is antibodies. The correct option is d.
What are antibodies?
The immune system is a bodily system that consists of white blood cells and antibodies that aid in the fight against any external invaders or infections that enter the body.
They are the body's defense mechanism. Antibodies recognize the pathogen and assist your body in combating it. These antibodies are produced by your body's immunological system. Everyone possesses a variety of antibodies. Each of them detects intruders, such as viruses and bacteria, that might cause illness.
An antibody is a protein that the body's immune system produces when it recognizes dangerous chemicals known as antigens. Microorganisms (bacteria, fungi, parasites, and viruses) and chemicals are examples of antigens.
Therefore, the correct option is d, Antibodies.
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Which structures of a euglena work together to keep it alive?
O A. Organ systems
O B. Tissues
O C. Specialized cells
O D. Organelles
Answers
Answer
D. Organelles
Hope it helps
given that the carbohydrate reserve in humans is so small, why is it so important?
Answers
Carbohydrate reserves may be small in humans, but they are still essential for maintaining blood sugar levels and providing energy during periods of physical activity or when food is not readily available. This is because carbohydrates are the body's primary source of fuel and play a vital role in energy production.
When carbohydrate reserves are depleted, the body may start to break down protein and fat for energy, which can lead to muscle loss and other negative health consequences. Therefore, even though carbohydrate reserves may be small, they are still crucial for human health and wellbeing.
Furthermore, carbohydrates are an important part of a healthy and balanced diet, providing essential nutrients and fiber that are beneficial for overall health. Therefore, even though the carbohydrate reserve in humans is small, it is still critical for maintaining optimal health and well-being.
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Which political party function involve putting where a candidate tand on the "iue" into writing?
financing a campaign
deigning a platform
running a campaign
chooing a candidate
Answers
Political party function involve putting where a candidate stand on the "issue" into writing is : designing a platform.
The goals , ideas , project and beliefs are the platforms in the politics. The political party is an organization that will coordinates with the candidates to compete in the particular country's election. the members of the political party will hold the similar ideas about the politics. the political party will be promote the specific ideology and the policy goals.
Thus, the designing a platform is the political party function that involve putting the candidate stand on the issue into the writing.
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3. Why is the active site of an enzyme important to enzyme activity?
a. It raises the activation energy of a reaction.
b. It allows the enzyme to interact with a large variety of substrates.
C.It allows the enzyme to catalyze very specific reactions.
d.
It allows an endothermic reaction to run as an exothermic reaction.
Answers
Answer: The correct answer is C. It allows the enzyme to catalyze very specific reactions.
Explanation:
The active site of an enzyme is the specific region where substrates bind and undergo a chemical reaction. The shape and chemical properties of the active site are critical to the function of the enzyme, as they determine which substrates the enzyme can bind to and the specific chemical reactions that can occur.
Enzymes are highly specific in the reactions they catalyze, and the active site plays a key role in this specificity. The shape and chemical properties of the active site are tailored to match the shape and chemical properties of the substrate molecule, allowing the enzyme to interact with only a specific set of substrates and catalyze specific chemical reactions.
Therefore, the active site is critical to enzyme activity because it allows the enzyme to catalyze specific reactions, and without it, the enzyme would not be able to function as a highly specific catalyst.
Silk is a natural protcin fibre material of high tensile strength. There are two kinds of silk, produced by spiders or silkworms, which differ in their characteristics. Average diameter of fibres prod
Answers
The average diameter of silk fibers produced by spiders is around 1.0 to 4.0 micrometers, while the average diameter of silk fibers produced by silkworms is around 10.0 to 25.0 micrometers.
Spiders produce silk fibers that are generally thinner and more lightweight compared to silkworm silk fibers. Spider silk is known for its exceptional tensile strength, elasticity, and toughness. The diameter of spider silk can vary depending on the spider species and the specific type of silk produced (e.g., dragline silk, capture silk). On the other hand, silkworm silk, also known as bombyx silk, is produced by the domesticated silkworm species Bombyx mori. Silkworm silk fibers are relatively thicker compared to spider silk but still possess high tensile strength. Silkworm silk is primarily used for the production of silk fabric and is renowned for its lustrous appearance and smooth texture.
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The density of the material will ___ when thermal energy is added to it.
Answers
Answer:
the unit used for measuring the heat.
Explanation:
depending on the work your doing it's D/4
sephadex g-75 has an exclusion limit of 80,000 molecular weight for globular proteins. if you tried to separate carbonic anhydrase (mw 24,000) from glyceraldehyde 3-phosphate dehydrogenase (mw 36,000) using this resin in a column, what would happen? glyceraldehyde 3-phosphate dehydrogenase would elute first, then carbonic anhydrase would elute. carbonic anhydrase would elute first, then glyceraldehyde 3-phosphate dehydrogenase would elute. carbonic anhydrase would be retained on the column, and glyceraldehyde 3-phosphate dehydrogenase would elute. both proteins would be retained on the column. both proteins would elute in the void volume. glyceraldehyde 3-phosphate dehydrogenase would be retained on the column, and carbonic anhydrase would elute.
Answers
If carbonic anhydrase (MW 24,000) is separated from glyceraldehyde 3-phosphate dehydrogenase (mw 36,000) using this resin in a column, Carbonic anhydrase would elute first, then glyceraldehyde 3-phosphate dehydrogenase would elute.
"What is Sephadex G-75?Sephadex G-75 is a cross-linked dextran bead-based gel filtration resin used to fractionate proteins and other macromolecules. In contrast to Sephadex G-50, which has a molecular weight exclusion limit of 5000, Sephadex G-75 has a molecular weight exclusion limit of 80,000 for globular proteins.
In a column containing Sephadex G-75, if carbonic anhydrase (MW 24,000) and glyceraldehyde 3-phosphate dehydrogenase (MW 36,000) were to be separated, carbonic anhydrase would elute first, followed by glyceraldehyde 3-phosphate dehydrogenase. This is due to the molecular weight of carbonic anhydrase, which is less than that of glyceraldehyde 3-phosphate dehydrogenase.
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How do animals get the carbon they need?
Answers
Animals get carbon by eating plants or by eating other animals.
the sequential development of the renal structures within intermediate mesoderm can best be described as
Answers
The sequential development of the renal structures within the intermediate mesoderm can best be described as the formation of three successive kidneys: the pronephros, the mesonephros, and the metanephros.
The pronephros is the first kidney to develop in the embryo, but it is short-lived and non-functional. It is replaced by the mesonephros, which is functional for a brief period of time during embryonic development. Finally, the metanephros develops and becomes the permanent kidney, which is functional throughout the rest of the individual's life.
This sequential development is important for the proper formation and function of the kidneys, which are responsible for filtering waste from the blood and regulating fluid and electrolyte balance in the body.
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which of the following was not one of darwin's observations?group of answer choicessome characteristics afford their possessor a better chance of survivalchanges in organisms were gradual and took place over long periods of timesome characteristics are heritable and passed on to offspringmembers of the same species may exhibit considerable variationmost individuals have an equal chance to survive and reproduce
Answers
The correct answer is: 1. Most individuals have an equal chance to survive and reproduce. This statement was not one of Darwin's observations.
The statement - Most individuals have an equal chance to survive and reproduce was not one of Darwin's observations.
Darwin observed that individuals within a population vary in their traits and that some traits can provide advantages for survival and reproduction.
This leads to differential survival and reproduction, with individuals possessing advantageous traits being more likely to pass them on to the next generation.
Darwin's observation was that individuals with certain advantageous traits have a better chance of survival and reproduction compared to others, which leads to the accumulation of favorable traits in a population over time. This concept is known as natural selection.
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The correct question is:
Which of the following was not one of darwin's observations?
1. some characteristics afford their possessor a better chance of survival
2. changes in organisms were gradual and took place over long periods of time
3. some characteristics are heritable and passed on to offspring
4. members of the same species may exhibit considerable variation
5. most individuals have an equal chance to survive and reproduce
what is a disadvantage of selective breeding cows to have larger udders to produce more milk
Answers
Answer:
The answer is D. The cow stood in udder amazement when she was unable to produce milk.
The reason is that puns usually use a play of words to make the statement sound funny or ironic. The word may have a double meaning, like in this example. For example, they replaced the word "utter" with "udder", which sound similar.
Describe the steps involved in the release of neurotransmitter into a synaptic cleft to bind to its receptor.
Answers
Answer:
Polarization and depolarization
Explanation:
The transfer of signal happens by the exchange of sodium and potassium ions in and out of the cell membrane of neuron.
signals pass through a cell junction from one cell to adjacent cells. membrane-bound signals bind to receptors on adjacent cells in the process of
Answers
contact-dependent signaling is the proccess in which the signals pass through a cell junction from one cell to adjacent cells
In direct intracellular signaling, signals pass through a cell junction from one cell to adjacent cells. - Membrane-bound signals bind to receptors on adjacent cells in the process of contact-dependent signaling. Example--(Delta-Notch pathway used in embryonic development. Delta, a transmembrane protein on the signaling cell, binds to Notch, a receptor on the receiving cell. Notch alters its conformation, allowing its cytoplasmic domain to be cut off by an enzyme called a secretase.)
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Which statement best describes an organ? A. Different types of tissues work together to carry out a function. B. Cells of one type work together to carry out a function. OC. This is the simplest level of organization of life OD. This is the most complex level of organization of life
Answers
Explanation:
The statement that best describes an organ is:
A. Different types of tissues work together to carry out a function.
An organ is a structure composed of different types of tissues that work together to perform a specific function in an organism. Organs are more complex than cells and tissues, but they are not the most complex level of organization in life. The most complex level of organization would typically refer to systems or organisms as a whole.
100 POINTS
a gene has the following nucleotide sequence TTCAGAGGT What amino acid sequence will the resulting protein have?
Answers
Answer:
im not gay
Explanation:
The nucleus, plasma membrane and ________ are the three major regions of cells that can readily be seen with a light microscope.
Answers
The 3 major regions of cells that can be seen under a light microscope are the nucleus, plasma membrane, and cytoplasm.
Cell organelles
The components of cells are referred to as cell organelles.
Cell organelles include the nucleus, mitochondrion, chloroplast, plasma membrane, etc.
Due to the magnification limit of the light microscope and the small size of some of the cell organelles, only a few of the organelles can be seen under it.
The organelles that are easily discernable under the light microscope include the liquid content of the cell (the cytoplasm), the plasma membrane, and the nucleus.
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The period during which a heart chamber is contracting is called . 2. The period during which a heart chamber is relaxing is called . 3. During ventricular contraction, the AV valves (tricuspid and mitral valves) are . 4. During ventricular relaxation, the AV valves are . 5. The pulmonary and aortic valves open when the pressure in the exceeds the pressure in the pulmonary trunk and aorta. 6. The first sound of a cardiac cycle occurs when the are closing. 7. The second sound of a cardiac cycle occurs when
Answers
Answer:
1.The period during which a heart chamber is contracting is called systole.
2. The period during which a heart chamber is relaxing is called diastole.
3. During ventricular contraction, the AV valves (tricuspid and mitral valves) are closed.
4. During ventricular relaxation, the AV valves are open.
5. The pulmonary and aortic valves open when the pressure in the ventricles exceeds the pressure in the pulmonary trunk and aorta.
6. The first sound of a cardiac cycle occurs when the atrioventricular valves are closing.
7. The second sound of a cardiac cycle occurs when the semilunar valves are closing.
Explanation:
We can divide the heart cycle into two parts the systole and the diastole. The systole happens when the heart walls contract, and the diastole when these relax.
The relaxation and contraction allow the flow of blood into the different heart chambers.
During diastole, blood flows to the right atrium from the vena cavae superior and inferior, and the coronary veins and to the left atrium from the pulmonary veins. The blood accumulated in the atriums causes the AV valves to open, and blood flows to the ventricles. In this part, the atrium pressure exceeds the ventricular pressure allowing the blood's flow. When the atriums contract, the remaining blood that was in them, goes to the ventricles. Throughout all this process, the pulmonary and aortic valve is closed due to a pressure difference.
During ventricular systole, there are two phases. First, the ventricles contracts themselves, and the ventricular pressure increases, being higher than the atrium pressure. As a consequence, the AV valves close. During this first phase of contraction, there is not enough pressure to open the pulmonary and aortic valves. In the second phase, the ventricles completely contract themselves, the ventricular blood pressure increases. It becomes higher than the pressure in the aortic and pulmonary valves. As a consequence, the blood pushes the valves open, and blood goes out of the heart. Then, the difference in pressure between the ventricles and the pulmonary trunk and aorta causes the valves in these areas to close.
The first sound that we listen to is the S1 and is during the ventricular contraction that closes the atrioventricular valves. The second sound is the S2, and it happens when the semilunar valves close, also knowns as aortic and pulmonary valves. S2 occurs during diastole once that the blood is out of the ventricle and the contraction has finished.
Pyruvate dehydrogenase is the entry point for the glycolytic product pyruvate into oxidative metabolism (the citric acid cycle and oxidative phosphorylation). Because it occupies such an important checkpoint in metabolism, it is tightly regulated.
Determine whether the given conditions promote entry into oxidative metabolism or limit entry into oxidative metabolism. These abbreviations may be used: PDH is pyruvate dehydrogenase; PDK is pyruvate dehydrogenase kinase; PDP is pyruvate dehydrogenase phosphatase.
Answers
PDH catalyze pyruvate to acetyl-CoA that enters the citric cycle. By phosphorylating a single subunit of PDH, PDK suppresses the enzyme's catalytic activity.
2. It is converted to lactate, is the response.
An essential enzyme in the body's process of dephosphorylating proteins is phosphatase. As a result, once PDK inactivates PDH, it contributes to the positive regulation of PDH (by dephosphorylating the PDH subunit). As a result, pyruvates in a person with phosphatase deficit will be converted to lactate because PDH is rendered inactive after PDK phosphorylates it. Thus, the conversion of the pyruvates to acetyl-CoA cannot be catalyzed.
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Full Question:
a) Determine whether the following conditions promote entry into oxidative metabolism or limit entry into oxidative metabolism. The following abbreviations may be used: PDH is pyruvate dehydrogenase; PDK is pyruvate dehydrogenase kinase; PDP is pyruvate dehydrogenase phosphatase.
Low O2 levels, PDK active;
High O2 levels, active PDH;
High O2 levels, PDK inhibitor present;
High O2 levels, inactive PDH;
High O2 levels, PDK active;
b) What is the fate of pyruvate (in a human) if a person has a phosphatase deficiency?
It is processed to lactate.
It is processed to acetyl-CoA.
It is processed to ethanol.
4a. fill in the table below with the expected characteristics of r vs k selected species. r-selected species k-selected species timing of maturation longevity parental care number of offspring size of offspring 4b. based on your table, would a species that provides long-term parental care and has few offspring be considered an r-selected or k-selected species? what is an example of such a species? 4c. why is long-term parental care associated with having few offspring during a reproductive episode?
Answers
Elephants and whales are examples of such species and because of the large number of children, individual parental care will not be possible.
a. *image attached*
b. K-selected species are those that have few offspring but provide long-term parental care. Long-lived organisms are more likely to have strong parental care and nurturing, a longer time to maturity, and K-selected reproductive strategies. Elephants and whales are examples.
c. Due to a lack of energy, species with a large number of offspring cannot provide for themselves as parents. There is no room left over for parental care because the development of seeds or offspring consumes the majority of their energy budget. Additionally, because of the large number of children, individual parental care will not be possible.
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Hypersecretion of growth hormone after normal growth has ceased may cause: acromegaly achondroplastic dwarfism pituitary dwarfism gigantism
Answers
Answer:
Hypersecretion of growth hormone after normal growth has ceased may cause gigantism
Explanation:
The answer is attached. Please refer the attachment.
1) the subcutaneous layer is also known as the a) dermis b) epidermis c) stratum corneum d) stratum basale e) hypodermis
Answers
The subcutaneous layer is also known as the e) hypodermis.
The subcutaneous layer, also known as the hypodermis, is the deepest layer of the skin located beneath the dermis. It is primarily composed of adipose tissue, blood vessels, and nerves. The hypodermis serves several important functions in the body.It acts as an insulating layer, providing thermal regulation and helping to maintain body temperature. The adipose tissue in the hypodermis acts as an energy reservoir, storing excess calories and providing insulation against heat loss.The hypodermis serves as a cushioning layer, protecting underlying structures such as muscles, bones, and organs from external impacts.The hypodermis plays a role in the appearance of the skin. The thickness and distribution of adipose tissue in the hypodermis contribute to variations in body shape and contour.The hypodermis is an essential component of the skin, providing insulation, cushioning, and contributing to the overall appearance of the body.The correct option is e) hypodermis.
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Many glycosaminoglycans are highly negatively charged at physiological pH. What functional groups contribute to this negative charge? a. Carboxylate and sulfite groups b. Carboxylate and sulfate groups Oc Hydroxyl and sulfate groups O d. Phosphate and sulfhydryl groups
Answers
The functional groups that contribute to the negative charge of many glycosaminoglycans at physiological pH are carboxylate and sulfate groups. The correct answer is option b.
Glycosaminoglycans (GAGs) are a group of long, linear polysaccharides composed of repeating disaccharide units that are highly negatively charged due to the presence of sulfate and carboxylate groups. The negatively charged sulfate groups (-SO3-) and carboxylate groups (-COO-) are located on the sugar residues of GAGs and contribute to the overall negative charge.
These functional groups dissociate to release hydrogen ions (H+) in solution, leading to the negative charge of the GAGs. This negative charge plays an important role in the structure and function of GAGs, as it allows for interactions with other charged molecules and facilitates their biological activities.
So, the correct answer is option b) Carboxylate and sulfate groups.
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.......... is the branch of science that deals with matter, energy, light etc.
Chemistry
Biology
Physics
Geology
Answers
Answer:
The correct answer is - Physics
Explanation:
Physics is the branch of science that is an organized study of matter, motion, light, energy, and its behavior in time and space. All these states in the observable universe and their effect is studied in detail in physics.
Physics is one of the basic and fundamental disciplines of science like biology, chemistry. Many other streams or filed of science are based on physics such as chemistry, oceanography, seismology, and astronomy.
Thus, the correct answer is - Physics
A critical rewiew of the literature is necessary in nearly all research projects. True False QUESTION7 OLioctivity and parsimony ase toet rolated to the rigor of an invesigatoo? Truse False QUESTION B Scientific itwestigatoo is characterized by a good theoretical base and a sound methodological design. These charactetistics are both relsted to the of the invesigation Wist must be filled on the line? Rigor Precision and contidance. Otinectivity Farnemeriv.
Answers
1. True 2. True 3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the Option a. Rigor
True - A critical review of the literature is necessary in nearly all research projects. It helps researchers understand the existing knowledge and gaps in the field, identify relevant theories and methodologies, and build upon previous studies.
True - Objectivity and parsimony are both related to the rigor of an investigation. Objectivity refers to the impartiality and lack of bias in conducting and interpreting the research, while parsimony refers to the principle of simplicity in explaining phenomena or choosing the most straightforward explanation. Both objectivity and parsimony contribute to the rigor of a scientific investigation.
a. Rigor - Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the rigor of the investigation. Rigor refers to the thoroughness, precision, and reliability of the research process, including the theoretical underpinnings and the robustness of the methods employed.
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The correct question is:
1. A critical review of the literature is necessary in nearly all research projects.
True
False
2. Objectivity and parsimony are both related to the rigor of an investigation?
True
False
3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the of the investigation What must be filled on the line?
a. Rigor
b. Precision and confidence.
c. Objectivity
d. Parsimony..
You are performing an enzymatic reaction to digest DNA and nothing works for you. You need to find out why. You added the enzyme and the DNA to the reaction yourself and you are sure you did it right. It must be the digestion buffer. The working solution for the digestion buffer should contain 400 mM Tris, pH 8. 0 and 125 mM MgCl2.
First, you ask your colleague how he made the digestion buffer and he says: "I mixed
0. 2 ml of 2M Tris, pH 8. 0 stock solution
0. 25 ml of 5M MgCl2 stock solution
and I completed the solution with 0. 55 ml water to make a final volume of 1ml. "
a) Before checking your colleague’s calculation, what important question do you have to ask first for this specific solution? (not a generic question about all solutions)
b) You are satisfied with his answer to a) and you believe he made a dilution error. You use the equation that applies to dilutions to check his calculations. Aha! you find the problem. What is it and how did you find out?
Note: you can either check the math or you can do the calculations yourself
Answers
This means that there was a dilution error when preparing the MgCl2 stock solution, leading to a higher concentration of MgCl2 in the working solution than desired. To fix the problem, we need to adjust the amount of MgCl2 used to make the working solution to achieve the correct concentration.
a) The important question to ask for this specific solution is whether the stock solutions used by your colleague were correctly prepared and labeled. This is important because using incorrect or mislabeled stock solutions could lead to incorrect concentrations in the working solution.
b) Using the equation for dilutions, we can calculate the expected concentration of Tris and MgCl2 in the working solution. The expected concentration of Tris is (0.2 ml/1 ml) x (2 M Tris) = 0.4 M Tris. The expected concentration of MgCl2 is (0.25 ml/1 ml) x (5 M MgCl2) = 1.25 M MgCl2. However, when we calculate the concentration of MgCl2 in the working solution using these expected values, we get (1.25 M MgCl2) / (0.55 ml + 1 ml) = 0.8 M MgCl2, which is different from the desired concentration of 125 mM (0.125 M). This means that there was a dilution error when preparing the MgCl2 stock solution, leading to a higher concentration of MgCl2 in the working solution than desired. To fix the problem, we need to adjust the amount of MgCl2 used to make the working solution to achieve the correct concentration.
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how osmosis is different from diffusion
Answers
Answer:
Diffusion:
Movement always works down the concentration gradient.
It does not Requires membrane.
It can be applied to liquids, solids, and gases.
Increase system entrophy
Osmosis:
Movement always works up the concentration gradient.
Requires membrane.
Only applicable to liquids.
Decreases system entrophy
a 1.5 kg brick is dropped from rest and hits the ground at a speed of 26m/s. calculated the gravitational potential energy of the brick before it was dropped
Answers
Answer:
The gravitational potential energy (GPE) of an object is given by the formula:
GPE = mgh
where m is the mass of the object, g is the acceleration due to gravity (9.8 m/s^2), and h is the height from which the object is dropped.
In this case, we can calculate the GPE of the brick before it was dropped as follows:
GPE = mgh
= 1.5 kg x 9.8 m/s^2 x 0
= 0 Joules
Since the brick was at rest on the ground before it was dropped, its initial height above the ground was zero. Therefore, its GPE was also zero.
Explanation: