BIOLOGY HIGH SCHOOL

Why do cells need to divide? A.contain to many chromosomes.
B. Cells need to get rid of waste products.
C.cells cannot live unless they divide often.
D. Cell division is how organisms grow

Answers

Answer 1
Answer:

Cell division is how organisms grow.

What is Cell division?

Mitosis and meiosis are the two distinct processes of cell division. When people talk about "cell division," they typically mean mitosis, which is the process of creating new cells for the body.

The cell division process known as meiosis is what produces egg and sperm cells. A vital process for life is mitosis. A cell divides into two identical daughter cells after duplicating all of its components, including its chromosomes.

Due to the importance of this procedure, specific genes carefully regulate each phase of mitosis. Health issues like cancer may develop when mitosis is improperly controlled.

Therefore, Cell division is how organisms grow.

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Bio homework help :)?Two populations of birds with somewhat different coloration live on opposite sides of a peninsula. The habitat between the populations is not suitable for these birds. When birds from the two populations are brought together, they produce young whose appearance is intermediate between the two parents. These offspring will breed with each other or with birds from either parent population, and all offspring of these pairings appear intermediate to various degrees. (use to answer Q 1.) 1.What keeps the two populations separate? behavioral reproductive isolation temporal reproductive isolation lack of hybrid viability spatial reproductive isolation They are already separate species. 2. Three populations of crickets look very similar, but the males have courtship songs that sound different. What function would this difference in song likely serve if the populations came in contact? a postzygotic isolating mechanism b prezygotic isolating mechanism c gametic reproductive isolating mechanism d behavioral reproductive isolating mechanism e two of the above 3. The peppered moth provides a well-known example of natural selection. The light-colored form of the moth was predominant in England before the industrial revolution. In the mid-nineteenth century, a dark-colored form appeared. The difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparently, birds could readily find the light moths against the soot-darkened background in industrial areas and therefore were eating more light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-colored moths have been disappearing. Should the two forms of moths be considered separate species?a. Yes, because natural selection has affected the frequency of the two different forms.b. Yes, because they have completely different coloration.c. Yes, because they are reproductively isolated based on habitat.d. Yes, because they have completely different coloration and natural selection has affected the frequency of the two different forms. e. No.

Why are chromosomes visible during mitosis but not at all other times?

Answers

 Chromosomes are visible at any time but are most easily seen through a simple microscope when they meet at the plate during the metaphase stage of mitosis because the chromosomes are jumbled together and then form the traditional X-shape. 

They are easy to see because a single strand of DNA from H. sapiens is about 6 feet long! 

Good luck on that test of your and i hope you past the test

The growth of most plants is limited by the amount of nitrogen available. Which of the following effects does low nitrogen availability most likely have on the carbon cycle?A More carbon dioxide is taken up by plants
B Carbon dioxide is trapped in the soil around plants
C Less carbon dioxide is removed from the atmosphere.
D Carbon dioxide is converted to carbonates by bacteria.

Answers

C. Less carbon dioxide is removed from the atmosphere.

What other autoimmune diseases is pernicious anemia associated with?

Answers

Pernicious anemia is an autoimmune disease that primarily affects the absorption of vitamin B12 in the stomach. While pernicious anemia itself is not directly associated with other autoimmune diseases, individuals with autoimmune conditions may have an increased risk of developing multiple autoimmune diseases simultaneously.

Some autoimmune diseases that individuals with pernicious anemia might be at a higher risk of developing as part of APS or due to shared autoimmune mechanisms include:

Autoimmune Thyroid Diseases:

These include conditions like Hashimoto's thyroiditis and Graves' disease.

Type 1 Diabetes:

An autoimmune form of diabetes.

Addison's Disease:

An autoimmune condition affecting the adrenal glands.

Vitiligo:

An autoimmune disorder causing depigmentation of the skin.

Celiac Disease:

An autoimmune disorder triggered by the ingestion of gluten.

Rheumatoid Arthritis:

An autoimmune disease that primarily affects the joints.

identify the dependent variable: can kangaroos remember the location of food in the absence of odor? a. kangaroos b. location of food d. odor

Answers

Answer: is odor

Explanation: As individuals age, their ability to identify and remember different types of odors declines due to changes in the olfactory system and the brain. Research consistently supports this phenomenon.

Final answer:

The dependent variable is the location of food.

Explanation:

The dependent variable in the given question is location of food. The question is asking whether kangaroos can remember the location of food in the absence of odor. The location of food is what is being measured and observed in the experiment, while the odor and kangaroos are referred to as independent variables.

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Plant cells undergo photosynthesis to produce glucose, a usable form of chemical energy. The energy produced by plants becomes the base of an energy pyramid. Given the situation seen above, what reactant is missing in order for photosynthesis to occur? A) water
B) ozone
C) chlorophyll
D) radiant energy

Answers

Plants use their leaves to capture light energy during photosynthesis, water and carbon dioxide are converted by plants into sugar, hence option a is correct.

How does photosynthesis work?

Plants use glucose as a source of energy and to create other compounds like cellulose and starch and cell walls are constructed using cellulose.

In a process known as photosynthesis, plants use carbon dioxide, water, and sunshine to create sugar and oxygen.

Chloroplasts, tiny compartments found inside plant cells, are where photosynthesis takes place.

Therefore, the removal of carbon dioxide from the atmosphere and utilize water in the production of food make this a significant process for the planet, hence option a is correct.

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water is the correct answer.

Genetic codes contain _____. random data nonfunctional chance information complex information detailed instructions accidental complexity

Answers

Genetic codes contain complex information detailed instructions. 
>>The genetic code are the set of rules by which information encoded within DNA or mRNA sequences which can be both translated into proteins by living cells or transcribed into non-coding RNAs that serve as regulatory tools in gene regulation.
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