What are examples of molecules (related to breathing that move by simple diffusion right through the membrane)

from higher concentration outside the cell into the cell; whereas
moves from higher concentration inside the cell to outside to be exhaled by our lungs.

15 !
you to anyone who : d

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.