Question 2 During depolarization, which of the following statements about voltage-gated ion channels is TRUE?
Multiple choice question.

A)
Na+ gates open while K+ gates remain closed

B)
K+ gates open while Na+ gates remain closed

C)
K+ gates open before Na+ gates

D)
Na+ and K+ gates open at the same time

E)
Na+ gates open before K+ gates

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above