Wo sea urchin proteins were named cyclin a and b because, during the embryonic cell cycle, they were periodically
a. activated and inactivated by phosphorylation and dephosphorylation.
b. synthesized and degraded.
c. ubiquitylated and nonubiquitylated.
d. bound and released by another protein.

answer: i cant find your answer. do u have another way i can answer it for you : )

explanation:

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

b) the inside picture would look at a very high temperature in a very low ph