When studying phenotypic variations due to the environment, it is necessary to compare organisms with identical genotypes. in addition, it is necessary to use identical environments when studying variation in genotypes.

a. True

b. False?

Which of the following statements describes a benefit of most cells being small? O A. Small cells move more slowly than larger cells. B. Small cells have a greater surface-to-volume ratio than larger cells. O O C.

What are the consequences of having pyrimidine dimers in DNA? 1. They form an extra phosphodiester bond between them. 2. They create an apyrimidinic site 3. These dimers distort the DNA structure and result in errors during DNA replication. 4.

How do the cells in a fish react when moving from saltwater to freshwater? a. the cell fills with water b. the cell fills with salt c. the cell forms stem cells d. the cell uses exocytosis

What will happen to fish if the water get too hot or too cold?

What are the 2 primary agents of cellular communication?

Vwhat is the function of endocrine glands? view available hint (s) what is the function of endocrine glands? they release enzymes into the bloodstream through ducts.

In which structure would you expect to find many newly produced molecules of atp?

Which of the following describes how DNA provides evidence to support that life changes over time? A) Some animals exhibit similar stages of embryonic development. B) Some animals exhibit structures that are no longer used for any purpose.

Of the 5 systems of the earth, which 2 would be most affected by a hurricane?

Which of the following are found in both DNA and RNA A. Ribose, phosphate groups and adenine B. Deoxyribose, phosphate groups, and guanine C. Phosphate groups, guanine, and cytosine D. Phosphate groups, guanine, and thymine