Answer:
.if you see this this is a teacher and i see all of this stuff so yall quite trying to cheat
Explanation:
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Answer:
a) is a way for a cell to give information about its activities.
Explanation:
Antigen processing and presentation is the process in which an antigen presenting cells expresses a peptide antigen on its cell surface in association with a classical class molecules
Answer:
it's related to the factors of diffusion, in this case...
the molecule is small, the mass of it is a factor of diffusion, since it's smaller, it can diffuse quickly, since it has less weight, so it moves faster.
When the cell increases in size, the volume increases faster than the surface area, when there is more volume and less surface area, diffusion takes longer and is less effective.
