Question

a cell that has crenated has ______.
a swollen up
b burst
c broken in half
d shrunk

Explanation:

Crenation refers to the process where a cell (usually a red blood cell) shrinks and develops a notched or scalloped surface, typically due to being in a hypertonic solution (where water leaves the cell via osmosis). Option A is incorrect as swelling is called hemolysis in some contexts or just cell swelling, not crenation. Option B (bursting) is also related to excessive water intake (hypotonic solution) and is lysis, not crenation. Option C (broken in half) is not what crenation is. Option D (shrunk) matches the definition of crenation as the cell loses water and shrinks.

Answer:

D. shrunk