Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

In a cladogram' when does a group of organisms branch off

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other