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Question 1
When an intestinal cell ingests substances inside very small vesicles that can only be seen with an electron microscope , this is
Select one :
a . pinocytosis .
b . phagocytosis .
c . exocytosis .
d . active transport .
e . diffusion .
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Question 2
Radioactive isotopes are used to tag proteins in the cell membranes of mouse cells . These cells are then fused with human cells in cultures . What is the likely consequence of the tagged mouse proteins ?