Answer:
1. Set up the microscope with the slide prepared.
2.Use 10x40=400
Explanation:
Prepare the slide and set up the microscope. Use 10x40=400
What is microscope?Microscope is defined as an optical device that magnifies an item using a lens or combination of lenses. They aid in viewing many organisms as well. A microscope's light also makes it easier to see bacteria. We use microscopes to examine items more closely and see details that aren't visible to the eye. We wouldn't know about the existence of cells, how plants breathe, or how rocks evolve over time without them.
You can see the slide more clearly than with a scanning objective lens without getting too close for general viewing thanks to the 100x total magnification that a low power objective lens and a 10x eyepiece lens provide. The sum of the magnifications from the two lens systems is the overall magnification. As a result, the 10X objective and 10X ocular lenses on the microscope would magnify the object by 10 x 10 or 100 times.
Thus, prepare the slide and set up the microscope. Use 10x40=400
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What occurs during the process of gas exchange?
Answer:
During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
Which circumstance can cause positive
population growth?
A.
The immigration rate is lower than the death rate.
© B. The death rate is higher than the birthrate.
O C. The birthrate is higher than the death rate.
• D. The emigration rate is the same as the birthrate.
Answer is birthrate D
Answer:
C
Explanation:
When the birthrate is higher than thedeathrate
a little summary how ultraviolet light could be the answer to the future outbreak
( Two paragraphs).
Ultraviolet light can be the answer to future outbreaks because it has the capability to kill the microorganisms present in air and thus can prevent the infectious diseases caused by them.
Ultraviolet light is the EM radiation with the wavelength range 10 nm to 400 nm. It is already being used in research labs for maintaining the microbe free environment. Researches are also being conducted to produce such ceiling lights that can be used normally in households so that the the air-borne microorganisms can be killed.
Microorganisms are the small living organisms not visible to the unaided eyes. They have the strong capability to produce their new variants by mutation and cause infectious diseases. The ultraviolet light can kill them even before they are able to transform themselves.
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a region periodically experiences a long drought of the population if the region is near the region carrying capacity at that time the population is most likely to have anA decreasing growth rate B increasing birth rateC increasing fertility rate D Decreasing death rate
If a region that experiences a long drought and the population is near to the region capacity at this period, that population is most likely to have an decreasing in the growth rate.
PLS HELP -
Drag the tiles to the correct boxes to complete the pairs.
Match the pollution control method to its description
Answer:
Incineration: Solid pollutants are burned...
Settling: Polluted water is aloud to stand still...
Composting: Microbes are used to convert...
Gas adsorption: Pollutants are captured through contact with hard...
Explanation:
Amazing nowone else got to your question. Your welcome.
Which of these organelles carries out cellular respiration?
a. chromatin
b. mitochondrion
c. nucleolus
d. smooth endoplasmic reticulum
e. ribosomes
Mitochondria convert the chemical energy of organic molecules to chemical energy in the form of ATP.
Mitochondria differ from chloroplasts in that mitochondria are the energy bank for each cell, whereas chloroplasts house chlorophyll, which provides green pigmentation for photosynthesis in plants.
What is cellular respiration?Cellular respiration is a component of the metabolic process that breaks down glucose sugar molecules to produce energy in the form of ATP. The Krebs cycle, oxidative phosphorylation, and glycolysis are all components of cellular respiration. Cellular respiratory activity takes place in the mitochondria of the cell, where an oxygen-rich environment breaks down the sugar-like glucose into energy molecules. It also emits water and carbon dioxide as waste and by-products. So go for option A. It is in the mitochondria of cells that the process of cellular respiration takes place. This process takes place in mitochondria. As a result, photosynthetic reactants are by-products of cellular respiration, the link between cellular respiration and photosynthesis.
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Predict the most likely outcome of culturing transformed E. coli in the presence of tetracycline.Justify your prediction.
Answer:
E.coli is a bacterium which is preffered for transformation due to its rapid growth and high efficiency of introduction of DNA molecules into cells.
Tetracycline is an antibiotic used to treat several infections such as cholera, plague, brucellosis, and malaria etcetra.
Plasmid is a small, extrachromosomal DNA molecule present in cell which is seprated from chromosomal DNA and have ability to replicate independently.
When a plasmid resistant to tetracycline and kanamycine is inserted into E.coli, the process is called transformation. E.coli might not be able to survive due to absence of plasmid but the transformed strains having antibiotic tetracycline and kanamycine will probably be able to survive it.
Hence, the culture of bacteria carrying plasmid will be able to survive only.
Maximum transformation to tetracycline achieved when cells were harvested from L broth at 5.0-6.0 cfu/ml , followed by washing twice in cold.
The susceptibility of E.coli strain to culturing transformation by plasmid DNA was examined and optimized.
TransformationCells grown within the presence of D - cycloserine ( Cyc ) rather than Neg Gram (N x) transformed better. The presence of 5 mm Mg2+ ions in washing and CaCl2 solutions stimulated transformation about 2-fold.
Optimal conditions for transformation included a pH range of seven. 25-7.75 and a cell-to-DNA ratio of about 1.6 . 10(8) cfu/ng plasmid DNA.
The frequency of transformation was highest when cells were exposed to 100 mM CaCl2 in 250 mm.
Composition\(\rm KCl + 5 mM \;MgCl2 + 5 mM \;Tris\)
pH 7.6, before mixing with DNA
Therefore, the results of culturing transformed E.coli within the presence of tetracycline is justified.
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In sexual reproduction, individuals transmit half of their nuclear genes to each of their offspring.
Which of the following is a true statement about sexual vs. asexual reproduction?
Sexual reproduction is a process that involves the fusion of gametes (the sperm from the male and the ovum from the female). As a result of sexual reproduction, individuals transmit half of their nuclear genes to each of their offspring.
Each gamete contributes one set of chromosomes to the offspring. This ensures that the offspring are genetically diverse, since each parent's set of chromosomes comes from the parent's parents and can combine in many different ways. This genetic diversity can allow for the evolution of new traits and adaptations in the population. Asexual reproduction, on the other hand, does not involve the fusion of gametes.
Rather, offspring are produced by a single parent and are genetically identical to that parent. This can be an advantage in certain situations, such as when the environment is stable and there is little need for genetic diversity. However, in changing environments, sexual reproduction can provide an advantage because it allows for more rapid adaptation to new conditions.
Therefore, the true statement about sexual vs. asexual reproduction is that in sexual reproduction, individuals transmit half of their nuclear genes to each of their offspring. This ensures genetic diversity that can allow for the evolution of new traits and adaptations in the population.
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why is understanding the causes of different diseases important???
Answer:
It’s important to understand the causes of different diseases so that they can be prevented. If they can’t be avoided, then this information can help identify the proper route for treatment.
Explanation:
Answer:
Because by understanding the causes of these diseases, they can be prevented.
That is why it is so important to know the reasons why certain diseases appear.
Does a human's body temperature change due to temperature changes at the
extremities or changes in ambient temperature?
Make a claim based on the evidence.
What is the answer to your question based on your evidence?
Answer: The distribution of skin temperature throughout the body is not uniform (i.e. lower in the extremities than in the trunk) and it also changes with environmental temperature (i.e. it is higher in summer than in winter).
Explanation: The human body regulates body temperature through a process called thermoregulation, in which the body can maintain its temperature within certain boundaries, even when the surrounding temperature is very different. The core temperature of the body remains steady at around 36.5–37.5 °C (or 97.7–99.5 °F).
the accompanying image is a chest x-ray with the outline of the heart as it sits in the mediastinum resting atop the diaphragm. which heart chamber forms the right border of human hearts?
The right border of the human heart on a chest X-ray is formed primarily by the right atrium.
The heart sits in the mediastinum, which is the central compartment of the thoracic cavity. The heart's right atrium is the upper chamber responsible for receiving deoxygenated blood from the body and passing it into the right ventricle, which then pumps it to the lungs for oxygenation.
The right ventricle is positioned more towards the bottom of the heart and forms the inferior or lower border. Together, the right atrium and right ventricle contribute to the right side of the heart, as visualized in the chest X-ray image.
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Put the following steps of bacterial replication in the correct order, starting from a parent cell.
Cell elongation
Septum formation
Chromosome replication
Separation of daughter cells
Bacterial replication follows a sequence of chromosome replication, cell elongation, septum formation, and separation of daughter cells to ensure the production of two identical cells from a single parent cell.
Bacterial replication, also known as binary fission, is a process in which a single parent cell divides into two identical daughter cells. The main steps involved in bacterial replication, in the correct order, are as follows:
1. Chromosome replication: The process begins with the replication of the bacterial chromosome, which is a circular DNA molecule. This is achieved through the action of DNA polymerase enzymes that synthesize new complementary strands of DNA.
2. Cell elongation: Following chromosome replication, the parent cell starts to elongate. This process involves the synthesis and assembly of new cell wall and membrane components. Cell elongation ensures that the two daughter cells will be of equal size upon division.
3. Septum formation: As the cell continues to elongate, a septum starts to form at the midpoint between the two replicated chromosomes. The septum is a structure made up of proteins and peptidoglycan, which is a major component of the bacterial cell wall. Septum formation is crucial for dividing the cytoplasmic contents and separating the two daughter cells.
4. Separation of daughter cells: Finally, the septum grows and completely divides the parent cell into two individual daughter cells. Each daughter cell receives a copy of the replicated chromosome and an equal share of the cytoplasmic contents. The daughter cells are now ready to grow and undergo their own replication process.
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what happens when oxygenated and deoxygenated blood mix in the heart
Answer:
In such a situation both lungs and tissues would receive blood with the same amounts of oxygen, which would affect the efficiency of the delivery of O2 to the tissues of the body. Generally, it occurs when there's a ventricular septal defect (a hole between the two ventricles), that causes the poorly oxygenated and well oxygenated blood to mix resulting into semi oxygenated blood.
It results in blood circulating in the arteries to be less oxygenated than it should due to which activity of the animal would be decreased.
Molecules that are _____________ and _____________ are able to move across the cell membrane via simple diffusion.
Molecules that are small and hydrophobic are able to move across the cell membrane via simple diffusion.
Among the few simple small molecules that can diffuse across the cell membrane are water, carbon dioxide, and oxygen (or a type of diffusion known as osmosis ). Diffusion is a key mechanism for material transfer within cells and for the passage of critical tiny molecules across the cell membrane.
What is Simple Diffusion?Simple diffusion is the movement of tiny, uncharged molecules or molecules that are soluble in lipids into or out of the cell, from regions of high concentration to regions of low concentration .
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Which substance acts as a buffer in natural water?
O A. A pH indicator
O B. Distilled water
O c. Decaying plant matter
O D. Sulfuric acid
Answer:
i think Decaying plant matter is answer
briefly explain natural selection
Answer:
Explanation:
Natural selection is the process through which populations of living organisms adapt and change. Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others.
in the process of glycolysis, four atp molecules are synthesized from four adp molecules. why does glycolysis not yield four molecules of atp?
The net benefit of glycolysis is only two ATP because the two ATP molecules are consumed in initial part of glycolysis, even if the four ATP molecules are created in second half.
One glucose molecule initiates glycolysis, which culminates with two pyruvate (pyruvic acid) molecules, four ATP molecules overall, and two NADH molecules. The cell has the net gain of two ATP molecules and two NADH molecules for usage since the two ATP molecules were required in the first half of the route to prepare six-carbon ring for cleavage. Only two ATP molecules will be produced from a molecule of glucose if the organism is unable to further catabolize pyruvate molecules (through the Krebs cycle or citric acid cycle). Pyruvate kinase, the enzyme that catalyzes the production of pyruvate, must be present in sufficient amounts for the final stage of glycolysis to take place.
The entire glycolysis pathway will in this case ,the full glycolysis pathway will continue to function, but the second half will only produce two ATP molecules (instead of the usual four ATP molecules). As a result, the rate-limiting enzyme for glycolysis is pyruvate kinase.
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transport that moves materials against the concentration gradient is said to be
Answer:
It is Active Transport.
which body part does a flatworm first use to catch its prey? responses digestive enzymes digestive enzymes mouth mouth gastrovascular cavity gastrovascular cavity pharynx
Pharynx. Hope this helped you!
Answer:
Your answer is: pharynx
Explanation:
Identify following phases of meiosis (URGENT!)
Answer:
Prophase I
Metaphase I
Anaphase I
Telophase I
Meiosis stage 1 Phases ^
Meiosis stage 2 phases
Prophase II
Metaphase II
Anaphase II
Telophase II
Which of the following accurately describes covalent bonds
Covalent bonds are accurately described as when atoms share one or more electrons.
What is Covalent bonding?This is a type of chemical bond that involves sharing of electrons between atoms.
Atoms in this category have tendencies to attract electrons to themselves which is why it was chosen as the most appropriate choice.
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what part of a glucose molecule provides electrons in cellular respiration?
Answer:
Hydrogen atoms are the part of the glucose molecule that provides electrons in cellular respiration.
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In a certain species of flowering plant, the purple allele P is dominant to the
Yellow allele p.
A student performed a cross between a purple-flowered plant and a
yellow-flowered plant. When planted, the 146 seeds that were produced from the
cross matured into 87 plants with purple flowers and 59 plants with yellow
flowers.
Calculate the chi-square value for the null hypothesis that the purple-flowered
parent was heterozygous for the flower-color gene. Give your answer to the
nearest tenth.
Answer:
3.4
Explanation:
If the purple flower is heterozygous:
Pp x pp
Pp Pp pp pp
the expected ratio of purple flower offspring to yellow flower offspring would be 50:50.
Chi square = \(\frac{(O - E)^2}{E}\) where O = observed frequency and E = expected frequency.
phenotype O E Chi square
purple 87 73 \(\frac{(80-73)^2}{73}\) = 0.67
yellow 59 73 \(\frac{(59-73)^2}{73}\) = 2.68
Total = 0.67 + 2.68 = 3.35 to the nearest tenth = 3.4
Degree of freedom = 2 - 1 = 1
Critical Chi square value (alpha = 0.05) = 3.84
SInce the critical Chi square value is greater than the calculated value, the null hypothesis is accepted.
Researchers in Georgia collected survivorship data in populations of two plant species, elf orpine (Sedum smallii) and oneflower stitchwort (Minuartia uniflora). If the populations of each species started with 500 individuals, how many individuals would be present in each species after seven months?Month Elf orpine survivorship Oneflower stichwort survivorship1 1.00 1.005 0.81 0.377 0.09 0.058 0.03 0.0210 0.02 0.0112 0.01 0.0113 0.00 0.00Number of elf orpine individuals at 7 months: _______Number of oneflower stitchworts individuals at 7 months: ______
Based on the provided survivorship data, we can calculate the number of individuals remaining for each species at seven months. For elf orpine, we start with 500 individuals and multiply by the survivorship rate for each month:
500 x 1.00 x 0.81 x 0.77 x 0.58 x 0.39 x 0.21 x 0.10 = 3.42 individuals
Therefore, after seven months, there would be approximately 3 elf orpine individuals present.
For oneflower stitchwort, we follow the same process:
500 x 1.00 x 0.37 x 0.05 x 0.02 x 0.01 x 0.00 x 0.00 = 0 individuals
Therefore, after seven months, there would be no oneflower stitchwort individuals present.
In summary, the number of elf orpine individuals at 7 months would be approximately 3, and the number of oneflower stitchwort individuals at 7 months would be 0.
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TRUE OR FALSE thermal energy causes water at the ocean surface to evaporate
Answer:
true
Explanation:
what is the definition of homozygous in biology?
The term "homozygous" in biology refers to an individual organism that has two identical alleles for a specific gene. This means that the organism has inherited the same version of the gene from both of its parents.
For example, if an individual has two alleles for the gene that determines eye color and both of those alleles are for brown eyes, then the individual is homozygous for the eye color gene. This individual will always have brown eyes, and will always pass on the brown eye allele to its offspring.
In contrast, an individual that has two different alleles for a specific gene is referred to as "heterozygous." This individual may display a different phenotype, or physical characteristic, than a homozygous individual for that same gene.
Overall, homozygous individuals have two copies of the same allele for a specific gene, while heterozygous individuals have two different alleles for that gene.
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An imaginary researcher examined the 18 largest mammal species in Asia that occur on both the mainland and on islands. Sixteen of the ASSIGNMENT PROBLEMS 11. Identify whether each of the following statements is more appropriate as a null hypothesis or an alternative hypothesis: a. Hypothesis: The number of hours that gradeschool children spend doing homework predicts their future success on standardized tests. b. Hypothesis: King cheetahs on average run the same speed as standard spotted cheetahs. c. Hypothesis: The mean length of African elephant tusks has changed over the last 100 years. d. Hypothesis: The risk of facial clefts is equal for babies born to mothers who take folic acid supplements compared with those from mothers who do not. e. Hypothesis: Caffeine intake during pregnancy affects mean birth weight.
The hypothesis b and d are Null hypothesis while hypothesis a, c, and e are Alternative hypothesis.
Null hypothesis and alternative hypothesis are two types of statistical inferences. Hypothesis testing is the process of testing the hypothesis. A hypothesis test is a statistical test that determines whether there is sufficient evidence in a sample of data to infer that a certain condition is true for the entire population. The null hypothesis is a statement that is assumed to be true unless sufficient evidence indicates otherwise. An alternative hypothesis is a statement that is accepted when the null hypothesis is rejected.
Given below are identification of each hypothesis as null hypothesis or alternative hypothesis:
a. Hypothesis: The number of hours that grade school children spend doing homework predicts their future success on standardized tests is more appropriate as alternative hypothesis.
b. Hypothesis: King cheetahs on average run the same speed as standard spotted cheetahs is more appropriate as null hypothesis.
c. Hypothesis: The mean length of African elephant tusks has changed over the last 100 years is more appropriate as alternative hypothesis.
d. Hypothesis: The risk of facial clefts is equal for babies born to mothers who take folic acid supplements compared with those from mothers who do not is more appropriate as null hypothesis.
e. Hypothesis: Caffeine intake during pregnancy affects mean birth weight is more appropriate as alternative hypothesis.
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State lab review packet answers diffusion through a membrane -beaks of finches - making connections - relationships and bio diversity
Answer:
Diffusion can happen with or without a membrane. It always takes place down a concentration gradient, which means the substance will diffuse from an area of higher concentration to an area of lower concentration.
Biodiversity is critical to maintaining the balance of the ecosystem. Without a diverse collection of organisms, the species in the environment cannot thrive and are at a risk of extinction in extreme cases.
Hope that answers the question, have a great day!
In what control panel can the feature Electron Denity and Partial Charge be found?
Electron Density can be found in the "Surface" control panel to the right of the molecule. You can find Partial Charge on the control panel to the right of the molecule, namely "View." To the right of the molecule, the electronic structure can be found in the "Surface" control panel.
The control panel to the right of the molecule includes a number of visualization and analysis tools for the molecule. The electron density is a measure of the quantity of electron density at each place in the molecule. This is accessible through the "Surface" control panel. A second characteristic is the partial charge, which quantifies the amount of charge on each atom. This is accessible through the "View" control panel. In the "Surface" control panel, you can view the electrical structure of a molecule. All of these elements allow users to obtain a deeper comprehension of the chemical they are researching and can be used to examine the molecule's qualities.
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banda, compre una planta carnivora (una nepethe), como o que consejos me darian para cuidarla bien