Correct me if i'm wrong i think the best answer would be d. the cow uses all of the corn's energy for life processes.
C. Would be the right answer!!!!!!
<span>d. neither of these will cross a plasma membrane.
Glucose cannot diffuse across a plasma membrane as it is polar. Since the question doesn't specify the type of diffusion, simple diffusion is assumed.
If you count facilitated diffusion, then A is the answer.</span>
