Answer:
Mitosis occurs in somatic cells; this means that it takes place in all types of cells that are not involved in the production of gametes. Prior to each mitotic division, a copy of every chromosome is created; thus, following division, a complete set of chromosomes is found in the nucleus of each new cell. Indeed, apart from random mutations, each successive duplicate cell will have the same genetic composition as its parent, due to the inheritance of the same chromosome set and similar biological environment. This works well for replacing damaged tissue or for growth and expansion from an embryonic state. Because the genes contained in the duplicate chromosomes are transferred to each successive cellular generation, all mitotic progeny are genetically similar. However, there are exceptions. For example, there are genetic variations that arise in clonal species, such as bacteria, due to spontaneous mutations during mitotic division. Furthermore, chromosomes are sometimes replicated multiple times without any accompanying cell division. This occurs in the cells of Drosophila larvae salivary glands, for example, where there is a high metabolic demand. The chromosomes there are called polytene chromosomes, and they are extremely large compared to chromosomes in other Drosophila cells. These chromosomes replicate by undergoing the initial phases of mitosis without any cytokinesis (Figure 2). Therefore, the same cell contains thick arrangements of duplicate chromosomes side by side, which look like strands of very thick rope. Scientists believe that these chromosomes are hyper-replicated to allow for the rapid and copious production of certain proteins that help larval growth and metamorphosis
Explanation:
hope this helped!
9. A chromosome has the following segments, where * represents the centromere: AB*CDEFG. How would you describe a chromosomal mutation that created this chromosome: ADC*BEFG
When a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide (H2O2) decomposes. However, if the liver is cooked first, the reaction fails to occur. The reason for this is
a. heating kills the germs that cause the bubbling
b. heating damages the enzyme in liver that breaks down hydrogen peroxide
c. heating removes the water and oxygen from the liver
d. reactions take place faster at lower temperatures
Based on the nature of enzymes, heating damages the enzyme in liver that breaks down hydrogen peroxide
What are enzymes?Enzymes are organic molecules which catalyze biological reactions.
Some properties of enzymes include:
most enzymes are proteinsthey are denatured by heatEnzymes are specific in their actionWhen the liver is cooked, the enzymes present in the liver that decompose the hydrogen peroxide is denatured.
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Driving while sleep impaired is much safer than driving while intoxicated. Please select the best answer from the choices provided T F.
Answer:
false but both are unsafe
Explanation:
Driving while sleep-impaired is not safer than driving while intoxicated. In fact, it is just as dangerous, if not more so. Hence the statement is false.
Driving while sleep-impaired is a serious problem that can lead to accidents, injuries, and even death. When you are sleep-impaired, your reaction time is slowed, your judgment is impaired, and your coordination is decreased. These factors can all contribute to dangerous driving behaviors.
A study by the National Highway Traffic Safety Administration (NHTSA) found that drivers who are sleep-deprived are 7 times more likely to be involved in a fatal crash than drivers who are well-rested.
The study also found that drivers who are sleep-deprived are more likely to make mistakes, such as drifting out of their lane or failing to yield the right of way.
Therefore, the statement "Driving while sleep impaired is much safer than driving while intoxicated" is false.
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What do the letters outside the punnett square represent.
Answer:
the letters outside of a punnett square represent the parents genes
Female monarchs lay their eggs exclusively on which plant.
Answer:
Milkweed
Explanation:
Monarchs become poisonous for ingesting the Milkweed they hatch on, helping them avoid being eaten.
________ slow down transpiration by _________ the stomata Question 8 options: Guard cells; closing Chloroplasts; closing Guard cells; opening Chloroplasts; opening.
Transpiration is the rate of the water vapour exhalation by the plant cells through its opening pores. The correct blanks are guard cells and closing.
What is the structure of plant cells regulating transpiration?Plant cells have certain specialized cell organelles that help in maintaining the rate of the carbon dioxide and the water content in their cells.
Stomata of the plant cells are specialized organelles that maintain the water and rate of transpiration by the plants. They have guard cells surrounding them that regulates their opening and closing.
The guard cells of the stomata form pores of the stomatal opening. The opening and the closing of the pores are regulated by the bulge and the carbon and the water intake and outtake of the cell is maintained.
Therefore, option A. guard cells and closing are the correct blanks.
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Which of the following is formed when minerals and extreme heat and pressure are combined?
Answer:
Metamorphic rocks
Explanation:
Viruses come in what kind of shapes and
sizes?
A. only square or rectangular
B. only cube or prism
C. many different
D. always spherical
Answer:
c
Explanation:
if i'm wrong blame me
Pls help with science
Answer:
number 10 - the plants are the same because you need to have them that way, so it doesn't change anything about the experiment
Explanation what might happen to one plant
might not happen to the other
A small portion of the fetal part of the placenta is removed to prepare a karyotype in the process called ______.
Answer: chorionic villus sampling
Explanation:
CVS: A thin tube that is guided through the cervix. Is a type of prenatal diagnostic test to detect chromosomal problems that can result in genetic diseases and birth defects.
removing seeds from cotton plants was a slow job until eli whitney invented the cotton gin what is cotton gin
what percentage of the water entering the small intesneine is not absorbed during the digestive process
The 10% of the water entering the small intestine is not absorbed during the digestive process.
What is the Digestive process?The digestive process may be defined as a type of process that significantly deals with the organs that take in food and liquids and ultimately break them down into simpler substances so that the body can utilize them for energy production, growth, and tissue repair.
It may be thought that 90% of the water entering the small intestine is absorbed during the digestive process. This percentage of absorbed water constitutes either liquid or solid food. Apart from this, 95% of the carbohydrates and protein you consume are absorbed in the small intestine during the same process.
Therefore, 10% of the water entering the small intestine is not absorbed during the digestive process.
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Which statements are true about the phosphorus cycle? Select all correct answers.
A) Phosphate flows from the atmosphere to the geosphere.
B) Phosphorus is stored in only abiotic reservoirs.
C) Weathering releases phosphate from rocks.
D) Phosphate is taken up by producers in aquatic ecosystems.
Answer:
B) Phosphorus is stored in only abiotic reservoirs.
Explanation:
The true statement about the phosphorus cycle is " Phosphorus is stored in only abiotic reservoirs".
What is the phosphorus cycle?The biogeochemical cycle known as the "phosphorus cycle" illustrates how phosphorus is changed and moved around in the soil, water, and both living as well as dead organic matter.
What are abiotic reservoirs?Abiotic storage space is a region of an ecosystem during which a chemical, like carbon or nitrogen, builds up or is stored away from living things.
The true statement about the phosphorus cycle is " Phosphorus is stored in only abiotic reservoirs".
Therefore, the correct statement is an option (B)
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Suggest why micro-organisms can grow and divide very quickly if they get into blood?
Answer:
Micro-organisms can grow and divide very quickly if they get into blood as the blood provides them food for growth and reproduction
Explanation:
Please mark me brainliest
Question 2 of 10 which structure is most likely used for motion?
Answer:
pretty sure it would be B
Explanation:
Thats the only thing that could possibly be used for moving around. hope this helps you
in the taiga biome, one of the major human impacts has been_____
A-fire prevention
B-Deforestation
C-water pollution
D-oil drilling
Answer:
The Answer is B: Deforestation
Explanation:
Current extensive logging in boreal forests may soon cause their disappearance.
both carbohydrates and fats provide erorgy, why is it that you get a sugar high,
ut not a fat high?
Answer: The body uses three main nutrients to function --- carbohydrate, protein, and fat. These nutrients are digested into simpler compounds. Carbohydrates are used for energy (glucose). Fats are used for energy after they are broken into fatty acids. Protein can also be used for energy, but the first job is to help with making hormones, muscle, and other proteins.
Cells in the pancreas can release glucagon, a hormone that signals the body to produce glucose from glycogen in the muscles and liver and release it into the blood.When glycogen is used up, muscle protein is broken down into amino acids. The liver uses amino acids to create glucose through biochemical reactions.Fat stores can be used for energy, forming ketones.Other hormones can raise the blood sugar level, including epinephrine (also called adrenaline) and cortisol released by the adrenal glands and growth hormone released by the pituitary gland.sorry if im wrong and have a wonderful day kind person!!!!!!
Help me right know!!!! How are dolphins affected by the moon or seasons?
Answer:
For dolphins that foraged at night, the presence of echolocation was reduced during nights of the full moon and during times of night that the moon was present in the night sky.
Explanation:
an action that benefits others but not ourselves is an example of:
Answer:
prosocial behavior
Explanation:
hope it helps
can someone explain the answer plz
Answer:
your ans is option A.
Explanation:
here stem cells are diploid (2n)
and pollen grains are male gametes so they are haploid (n) so thats why the correct and is 21
pls mark me as brain list
How are elements related to the Earth's crust?
discuss why too much respect for the feelings of those involved in conflict may hamper your attempt to effectively resolve it
We can say that too much respect for the feelings of those involved in a conflict may hamper your attempt to effectively resolve it because it generates bias.
What is bias?Bias is the inclination to side with one individual or group over another. This can be the case in the situation described as one might have too much respect for the feelings of those involved in a conflict and thus feel identified by them, causing a bias that affects your ability to make neutral decisions that can benefit all parties involved.
Therefore, we can confirm that too much respect for the feelings of those involved in a conflict may hamper your attempt to effectively resolve it because it generates bias.
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Too much respect for the feelings of those involved in conflict may ultimately prevent such a resolver of conflicts from taking a pragmatic approach when handling the matter thereby stalling the process of conflict resolution.
What is a conflict?A conflict is a disagreement between two or more parties over a common interest. Management of conflict is a very critical skill required in administration.
Many times, a person involved in resolution of conflicts may seek not to offend the feeling's of any of the parties involved in the conflict. This will ultimately prevent such a resolver of conflicts from taking a pragmatic approach when handling the matter thereby stalling the process of conflict resolution.
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Match each event with its description.
1. Lunar eclipse
2. New moon
3. Solar eclipse
4. Full moon
1. The moon is fully visible to observers on earth
2. The moon lies between earth and the sun, but does not block light from reaching earth
3. Earth blocks sunlight from reaching the moon
4. The moon blocks sunlight from reaching earth
Who designed the labyrinth of king minos in greek mythology?.
Answer:
Daedalus, (Greek: “Skillfully Wrought”) mythical Greek inventor, architect, and sculptor who was said to have built, among other things, the paradigmatic Labyrinth for King Minos of Crete. Icarus and Daedalus, etching by Giovanni David, 1775; in the Metropolitan Museum of Art, New York City.
List the steps on how seedless plants grow compared to seed plants.
Why does one strand of DNA need to be copied in short fragments?
Why does one strand of DNA need to be copied in short fragments?
Because the two strands of a DNA molecule have complementary base pairs#Carry_On_Learning
Check the three factors that influence population growth. A. Increasing Longevity B. International Migration C. Fertility Rates D. Social media use E. Water supply.
Population growth is the increase in the population number of a given species in a time. Longevity, migration and fertility rates affect population growth.
What are the factors affecting population growth?Increased Longevity has impacted the population growth as the life expectancy has resulted in the accumulation of more people as their age of living has increased.
International Migration can affect the population growth positively and negatively as moving of the person from one region will decrease its population growth while the region where they go will have increased population.
Fertility Rates has a great impact on the population as the fertility rate had decreased due to many factors and the population has declined.
Therefore, option A. longevity option B. migration and option C. fertility rates influence the population growth.
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Svetlana and her mother are very similar. Both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. Which statement most likely describes Svetlana’s traits? Svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. Svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. Svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. Svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.
Answer:
It's probably B, Svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment.
Explanation:
Again I'm not sure but this should be it.
:)
Hope this helps!
Answer:
B) Svetlana inherited her blue eyes from her mother, but her love for scrapbooking comes from her environment.
Explanation:
Edge Unit Test Review 2022. Got it correct from the person above. Thank them, my answer is just here so others aren’t misled.
Which form of transport requires the expenditure of energy?.
Which organelle do alga need in order to conduct photosynthesis?.
Answer:
sunshine is needed to carry out photosynthesis