Answers
Answer:
building and repairing cells
Related Questions
Usable fresh surface water is relatively scarce. To many people, streams and lakes are the most visible part of the water cycle. Not only do they supply the human population, animals, and plants with the freshwater they need to survive, but they are great places for people to have fun.
Answers
Answer:
True.
Explanation:
Usable fresh surface water is scarce. Freshwater is not in excess on our planet. We can find it on lakes, lagoons, rivers, and swamps, but it is only 3% of the totality of Earth's water. The importance of this water is that it is the one that is suitable for humans, a large number of plants, and animals. This is why there are different methods to store and distribute fresh water amongst all the population and places that need it. Besides, the places where freshwater is, are great for activities, such as swimming, sailing, rafting, diving, fishing, etc.
Since freshwater is scarce and has so many uses, we must take care of it.
binary fission process
Answers
Binary fission is a type of asexual reproduction typically observed in prokaryotes and a few single-celled eukaryotes.
What is fission?
Fission, in biology, is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original.
In this method of asexual reproduction, there is a separation of the parent cell into two new daughter cells.
Hence, this process happens with the division and duplication of the parent’s genetic matter .
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How do pregnancy and HRT influence breast cancer risk?
Answers
There are two main types of HRT:
combination HRT contains the hormones estrogen and progesterone
estrogen-only HRT contains only estrogen
Each type of HRT seems to have a different effect on breast cancer risk.
Combination HRT increases breast cancer risk by about 75%, even when used for only a short time. Combination HRT also increases the likelihood that cancer may be found at a more advanced stage, as well as increasing the risk that a woman diagnosed with breast cancer will die from the disease.
Women who are older than 30 when they give birth to their first child have a higher risk of breast cancer than women who have never given birth (15). Recent childbirth. Women who have recently given birth have a short-term increase in breast cancer risk that declines after about 10 years. During pregnancy and lactation, the levels of estrogen and prolactin are increased, and some studies demonstrate that high levels of estrogen and prolactin are associated with the development of breast cancer.
what are the 7 steps of the light dependent reactions ?
Answers
Answer:
STEP 1 Energy is absorbed from the sun.
STEP 2 Water is broken down.
STEP 3 Hydrogen ions are transported across the thylakoid membrane.
STEP 4 Energy is absorbed from the sun again.
STEP 5 NADPH is produced from NADP+.
STEP 6 Hydrogen ions diffuse through the protein channel.
STEP7 ADP becomes ATP.
Explanation:
explain metabolism as attribute of Living Organism
Answers
Answer:
Metabolism involves exchanges of chemical matter with the external environment and extensive transformations of organic matter within the cells of a living organism. Metabolism generally involves the release or use of chemical energy. Nonliving things do not display metabolism.
Explanation:
Brainleast please
help????? please and thank you
Answers
how sharp claws of eagle help in adaptation?
Answers
If you were studying the functions of skeletal muscle, you would be studying all of the following except: A.) helping maintain a constant body temperature B.) protecting internal organs C.) movement D.) stabilizing joints, or E.) production of red blood cells
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If you were studying the functions of skeletal muscle, you would be studying all of the following except E) production of red blood cells.
The striated muscle known as skeletal muscle, which moves the skeleton, is linked to the bones by tendons. It can be actively contracted and relaxed to carry out a variety of movements because it is under voluntary control.
By offering support and preserving the correct alignment of the bones, skeletal muscle also plays a significant part in the stabilisation of joints. This makes movement easy and effective while reducing the risk of joint damage.
The production of heat by skeletal muscles, which aids in controlling body temperature, is another crucial function. When skeletal muscle contracts, it creates heat as a consequence of metabolic processes. This heat can assist maintain a steady internal body temperature, which is crucial for proper cellular activity.
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two bacterial genes are transduced simultaneously. what does this suggest about the location of the two genes relative to each other?
Answers
If two bacterial genes are transduced simultaneously, it suggests that the genes are located close to each other on the same region of the bacterial genome.
Bacterial transduction is a process in which bacterial genes are transferred from one bacterium to another by a bacteriophage, a type of virus that infects bacteria. During transduction, the bacteriophage packages bacterial DNA into its viral capsid, and when it infects another bacterium, it transfers the packaged DNA.
If two bacterial genes are transduced simultaneously, it indicates that both genes were packaged together within the same viral capsid and transferred to the recipient bacterium. This suggests that the two genes are located close to each other on the bacterial genome.
The physical proximity of genes on the bacterial genome determines their likelihood of being transduced together. Bacterial genes that are located near each other are more likely to be packaged together by the bacteriophage and subsequently transferred in a single transduction event.
In conclusion, the simultaneous transduction of two bacterial genes suggests that these genes are closely located on the same region of the bacterial genome. This phenomenon provides insights into the genetic organization and physical proximity of genes within the bacterial chromosome.
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Some cancer treatment drugs act by stopping spindle fiber depolymerization. Why is this an effective mechanism? What limitations or risks does this come with?
Answers
The depolymerization of spindle fibers is an important part of cell division. It is effective because it prevents cancer cells from dividing and growing. However, this mechanism can have some risks, as it can affect healthy cells, which can lead to unwanted side effects. Additionally, some cancer cells may become resistant to this treatment.
Cancer treatment drugs can prevent the uncontrolled cell growth that is the cause of cancer by stopping spindle fiber depolymerization. Spindle fibers are essential for cell division, as they pull the chromosomes apart during mitosis. By preventing depolymerization, the spindle fibers cannot pull the chromosomes apart, and therefore the cell cannot divide. This helps to stop the growth and spread of cancer cells.
However, there are also limitations and risks associated with this type of treatment. One limitation is that it can also affect healthy cells, leading to side effects such as nausea, vomiting, and hair loss. Another risk is that cancer cells may become resistant to the treatment, meaning that it will no longer be effective. Additionally, this type of treatment may not be effective for all types of cancer, and it may need to be used in combination with other treatments.
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Which of the following activities is NOT primarily a function of the left hemisphere?
1. listening to a piano concert
2. reading junk mail
3. listening to a poetry reading
4. reading your psychology book
Answers
The activity that is not primarily a function of the left hemisphere is listening to a piano concert so the correct answer is option (1).
The left hemisphere is a region in the brain that processes language, logical reasoning, and analytical skills. It is also responsible for processing information from the right side of the body. It is connected to the right hemisphere by the corpus callosum, which is a band of fibers that allows communication between the two hemispheres.Listening to a piano concert involves processing musical information, which is primarily processed by the right hemisphere.
Music is a holistic experience that involves recognizing patterns and the emotional response that the music evokes. This is in contrast to language, which is primarily processed by the left hemisphere. Thus, listening to a piano concert is not primarily a function of the left hemisphere.Reading junk mail and reading a psychology book both involve language processing and logical reasoning, which are primarily functions of the left hemisphere.
Listening to a poetry reading involves language processing, emotional response, and creativity, which are also primarily processed by the left hemisphere. Therefore, all three of these activities are primarily functions of the left hemisphere.
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Please Help!!!
If you break down the chromosomes into smaller parts , you see that it is made up of______
What does it carry?
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Compare and contrast a Keystone Species with a Keystone Predator
NEED ANSWER ASAP
Answers
A keystone species is one that has a disproportionate impact on its ecosystem when compared to its abundance. A foundation species is usually a primary producer that dominates an ecosystem in abundance and influence.
what does the m stand for in interphase
Answers
Answer:
I believe the answer is mitosis
Explanation:
Hope this helps.
The scientists are planning an experiment using a light microscope to collect data. Which statement BEST describes how the scientists can identify nonliving samples?
Group of answer choices
The scientists should look for samples that do not have a regular pattern of shapes when viewed under the microscope.
The scientists should look for samples that have objects that look bigger when viewed under the microscope.
The scientists should look for samples that do not have a nucleus or cell membrane when viewed under the microscope.
The scientists should look for samples that have carbon atoms when viewed under the microscope.
Answers
Answer:
The scientists should look for samples that do not have a nucleus or cell membrane when viewed under the microscope.
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include; nucleus, cytoplasm, cell membrane, golgi apparatus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, vesicles, etc.
Generally, all nonliving organisms or things do not have life or cells in them and as such are devoid of cell organelles.
In this scenario, the scientists are planning an experiment using a light microscope to collect data. Thus, the statement which best describes how the scientists can identify nonliving samples is that, the scientists should look for samples that do not have a nucleus or cell membrane when viewed under the microscope.
Answer:
Scientists should look for samples that do not have a nucleus or cell membrane when viewed under the microscope.
Explanation:
(ii) Describe the stages used in the laboratory to clone and produce Tegon from the genetically
engineered cell.
Answers
Answer:
Explanation:
A small piece of circular DNA called a plasmid is extracted from the bacteria or yeast cell.A small section is then cut out of the circular plasmid by restriction enzymes, ‘molecular scissors’.The gene for human insulin is inserted into the gap in the plasmid. This plasmid is now genetically modified.The genetically modified plasmid is introduced into a new bacteria or yeast cell.This cell then divides rapidly and starts making insulin.To create large amounts of the cells, the genetically modified bacteria or yeast are grown in large fermentation vessels that contain all the nutrients they need. The more the cells divide, the more insulin is produced.When fermentation is complete, the mixture is filtered to release the insulin.The insulin is then purified and packaged into bottles and insulin pens for distribution to patients with diabetes.The DNA of an animal's somatic cell is transferred into an egg cell that has had its nucleus and DNA removed in order to create a clone. With the same genes as the cell donor, the egg develops into an embryo. The embryo is then placed inside the uterus of an adult female to develop.
What is DNA ?A polymer made of two polynucleotide chains that coil around one another to form a double helix is called deoxyribonucleic acid. All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid.
The process of genetic engineering consists of three main phases. These include (1) isolating DNA fragments from a donor organism, (2) integrating an isolated donor DNA fragment into the genome of the vector, and (3) allowing the recombinant vector to develop in the proper host.
Selection, mutagenesis, conjugation, and protoplasm fusion are examples of conventional genetic modification techniques that have been used, particularly for microbial starter cultures. The latter is comparable to somatic hybridization in plant systems.
Thus, The DNA of an animal's somatic cell is transferred into an egg cell that has had its nucleus and DNA removed in order to create a clone.
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need help, i will give free cookies <3
- dont guess please-
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Which of the following are ways in which white matter in the spinal cord conveys sensory and/or motor information between the body and the brain? Check all that apply.
-Ascending tracts conduct sensory impulses from the spinal cord to the brain.
-Each funiculus region contains either sensory or motor tracts, but not both.
Answers
White matter in the spinal cord conveys sensory and/or motor information between the body and the brain by ascending tracts that conduct sensory impulses from the spinal cord to the brain.
The dorsal column of the white matter sends sensory information to the brain, whereas the anterior column mostly sends motor instructions to the ventral horn motor neurons.
Corticospinal pathways are descending or motor tracts that are responsible for carrying nerve impulses from your brain to different skeletal muscles. Your body moves carefully and subtly as a result of these urges. Spinothalamic tracts are sensory or ascending tracts. They communicate information about pain and body temperature to our brains.
The posterior tract is the spinal cord's back has a number of sizable ascending or sensory tracts. These channels transmit pressure and touch signals from our skin to the brain. Additionally, they communicate vibrational information.
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What type of
cycle is the
water cycle
grouped as?
A. a biogeochemical cycle
C. a biochemical cycle
USGS
The Water Cycle
B. a biological cycle
D. a chemical cycle
Answers
Answer:
water cycle
Explanation:
A study was conducted to understand the factors controlling the rate at
which molecules or ions travel across cell membranes. An artificial
membrane was created that was composed of a phospholipid bilayer only.
The speed at which various substances crossed this membrane was
measured. Some substances can pass through an actual cell membrane
much faster than they passed through the artificial membrane in this study
Which of the following statements best explains this finding?"
Actual cell membranes have a much thicker phospholipid bilayer than the artificial
membrane does
Actual cell membranes have a variety of proteins embedded in the membrane that are
absent in the artificial membrane
Hydrophobic substances spend more time between the two layers of phospholipid in
the artificial membrane than they do between the layers in an actual membrane
Hydrophilic substand spend more time attached to the polar region of the
phospholipids in the artificial membrane than they do attached to the polar region of
the phospholipid in an actual membrane
Answers
Answer:
hhkiyrefhisoiydhdhusudhdxnydeyruekzkususususuusususuushxhxhhehiiffy
Explanation:
Christmas going find origin Odyssey poetic
Scientific knowledge A. cannot be modified, even if new information challenges prevailing theories. B. was modified regularly early in human history, but it can no longer be modified. C. must be modified by popular vote from the general public. D. can be modified as new information challenges prevailing theories.
Answers
Please help! Thanks in advance!
What 3 energy transformations occur after eating a spicy chicken sandwich?
Answers
Answer:
I wasn't even sure that happened, is spicy chicken bad for you?
Explanation:
Answer:
Physical, chemical, and heat.
Explanation:
Physical energy because of you chewing the food, chemical because of the enzyme's of your saliva, Heat energy because of your stomach acid churning it. :)
Which phrase best describes translation?
A. converts mRNA into a polypeptide
B. catalyzes bonds between amino acids
c.produces RNA from DNA molecules
D. recycles tRNA molecules for reuse
Answers
Answer:
converts mRNA into a polypeptide
The phrase that best describes the process of translation is that it converts mRNA into a polypeptide. The correct option is A.
What is protein translation process?Translation is the process of converting an mRNA script into a protein. Ribosomes and tRNA are used in this process.
A ribosome decodes messenger RNA (which is produced by transcription from DNA) to produce a specific amino acid chain, or polypeptide, during translation.
The process by which a cell produces proteins using genetic information carried in messenger RNA (mRNA).
mRNA is created by replicating DNA, and the information it contains instructs the cell on how to link amino acids together to form proteins.
Decoding a messenger RNA (mRNA) into amino acids is the process of translation. Polypeptides are made up of amino acids that have been linked together.
The translation process is divided into three stages: initiation, elongation, and completion.
Thus, the correct option is A.
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Using your data, compare atomic number with total number of spectral lines.
Is there a pattern? What might explain the presence or absence of a pattern
based on what you know about atoms, electrons, and emission spectra
Answers
With an increase in atomic number, the number of electronic configurations increases. It increases the transitions of the electron on the absorption of energy. Hence, the number of spectral lines increases.
How are spectral lines formed?A hot opaque body (solid or very dense fluid) produces a continuous spectrum, that is, it has all wavelengths. A hot transparent (low density) gas produces a spectrum of glowing lines (emission lines).
Spectral series are important in astronomical spectroscopy to detect the presence of hydrogen and calculus. A hydrogen atom consists of an electron orbiting its nucleus.
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How would a functional sociologist view the Burqa?
Answers
Answer:
A conflict sociologist would most likely view the Burqa as a sign of “power over women” or inequal rights. Since it is only women that are required to wear it, it could be viewed as men being superior.
The Burqa is a veil that is used to cover the whole face, leaving only a little opening for sight and is worn by women. It is usually associated with the people of Islamic faith.
A functional sociologist is a person from the school of thought that believes that society is a complex system that each part must work together for a better functioning society.
Therefore, a functional sociologist will most likely view the Burqa as:
A restrictive clothing that should be abolishedA cruel way to treat womenA symbol of control over a womanRead more here:
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What fusion process is occurring in the star Procyon B?
Answers
Answer:
Procyon B's progenitor star most likely had around 2.59 solar masses. Estimates suggest that the star spent about 680 million years on the main-sequence, fusing hydrogen in its core. It evolved into a giant and lost much of its mass due to stellar winds
Explanation:
Scientific consensus supports the idea that living organisms require oxygen. then, a scientist discovers a type of bacteria that metabolizes sulfur instead of oxygen, and thus survives in environments without oxygen. the scientist concludes that a diverse group of many different organisms could live in an oxygen-free environment. why are some scientists skeptical of the scientist’s results and conclusion? the results are different from the scientific consensus. the conclusion shows the scientist is not open-minded. the results will be difficult for scientists to reproduce. the conclusion needs to be supported by more evidence.
Answers
The conclusion needs to be backed up by more evidences only then scientists make a claim.
Finding one type of bacteria that can survive in an oxygen-free environment does not prove that many other organisms can as well. It is important to understand the biological processes that give organisms the traits that enable them to live in settings devoid of oxygen. More data from many groups of species are required to support the statement.
In what all conditions can bacteria thrive?Although bacteria can survive at higher and lower temperatures than humans, they thrive in an environment that is warm, wet, protein-rich, and pH neutral or slightly acidic. However, there are several exceptions. While certain bacteria can survive in extremely hot or cold environments, others can endure excessively acidic or salty environments. The danger zone, or the temperature range between 41 and 135 degrees Fahrenheit, is where most pathogenic bacteria thrive.
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The conclusion needs to be supported by more evidence.
Water is produced from the __ of oxygen A. Oxidation B. Reduction C. Fixation D. Combustion
Answers
Answer:
Combustion
Explanation:
"During combustion, oxygen is added to a molecule, which produces water in this reaction. Combustion also releases a lot of energy. "
"The general equation for a complete combustion reaction is: Fuel + O2 → CO2 + H2O."
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Won't let me add sources :')
The bones from an animal found at an archaeological dig have a C614 activity of 0.10 Bq per gram of carbon. The half-life of C614 is 5730 yr. What is the age of the bones?
Answers
C14 is an isotope used in radiocarbon dating techniques to date organic matter remains. The age of these bones is approximately 6890 years.
What is Carbon 14?
Carbon 14, also known as radiocarbon, is a radioactive carbon isotope.
Isotopes are the atoms of the same element -carbon- that vary in neutrons and, hence, in their massic number. They are alternative forms of the same element.
The radioactive C14 nucleus contains 6 protons and 8 neutrons and has a half-life of 5730 years.
The term half-life is a reference. It means that an organism that has been dead for 5730 years has half the C14 amount or concentration than the same organism had when it was alive.
Knowing the half-life of an element is useful to determine the age of the dead matter.
C14 is used in radiocarbon dating techniques or methods to estimate the age of fossils. This is a reliable technique used for dating organic samples that are less than 50,000 years old.
Available data:
The half-life of C14 is 5730 yearsBones activity of 0.10 Bq per gram of carbonTo answer this question we can make use of the following equation
Ln (C14T₁/C14 T₀) = - λ T₁
Where,
C14 T₀ ⇒ Amount of carbon in a living body. We know, by bibliography, that living organism activity is 0.23 Bq per gram of carbon. So, C14 T₀ = 0.23 Bq/gC14T₁ ⇒ Amount of carbon in the dead body. C14T₁ = 0.1 Bq/gλ ⇒ radioactive decay constant = (Ln2)/T₀,₅T₀,₅ ⇒ The half-life of carbon 14 = 5730 yearsT₀ = Time when the organism was aliveT₁ = Age of bonesLet us first calculate the radioactive decay constant.
λ = (Ln2)/T₀,₅
λ = 0.693/5730
λ = 0.0001209
Now, let us calculate the first term in the equation
Ln (C14T₁/C14 T₀) = Ln (0.1/0.23) = Ln 0.4347 = - 0.833
Finally, let us replace the terms, clear the equation, and calculate the value of T₁.
Ln (C14T₁/C14 T₀) = - λ T₁
- 0.833 = - 0.0001209 x T₁
T₁ = - 0.833 / - 0.0001209
T₁ = 6889.99 ≅ 6890 years
The bones are approximately 6890 years.
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Which definition of inspiratory reserve volume is correct? Your answer: O Extra volume that can be inspired above tidal volume, from normal quiet inspiration to normal quiet inspiration O Extra volume that can be expired below tidal volume, from normal quiet expiration to normal quiet inspiration O Extra volume that can be expired below tidal volume, from normal quiet expiration to maximum expiration O Extra volume that can be expired below tidal volume, from normal quiet expiration to normal quiet expiration O Extra volume that can be inspired below tidal volume, from normal quiet expiration to normal quiet expiration O Extra volume that can be inspired above tidal volume, from normal quiet inspiration to normal quiet expiration O Extra volume that can be expired above tidal volume, from normal quiet inspiration to normal quiet expiration O Extra volume that can be expired above tidal volume, from normal quiet inspiration to maximum expiration O Extra volume that can be inspired below tidal volume, from normal quiet expiration to normal quiet inspiration. O Extra volume that can be inspired below tidal volume, from normal quiet expiration to maximum inspiration O Extra volume that can be expired above tidal volume, from normal quiet inspiration to normal quiet inspiration O Extra volume that can be inspired below tidal volume, from normal quiet expiration to maximum expiration
Answers
Therefore, the correct definition of inspiratory reserve volume is Extra volume that can be inspired above tidal volume, from normal quiet inspiration to normal quiet expiration.
Inspiratory reserve volume (IRV) is defined as the additional volume of air that can be inhaled after the end of a normal inhalation.
The inspiratory reserve volume of the lungs is the amount of air that can be inspired after normal inspiration. It is generally measured by having a person breathe normally and then inhale as deeply as possible.
The IRV is the difference between the maximum volume of air that can be inhaled and the normal tidal volume.
It is a respiratory parameter that represents the amount of air that a person can inhale beyond the tidal volume during quiet breathing. The average inspiratory reserve volume is around 3000 ml in healthy adults.
The inspiratory reserve volume is a measure of respiratory function and is used to diagnose and monitor respiratory disorders such as asthma, chronic obstructive pulmonary disease (COPD), and restrictive lung diseases.
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