A defense cell engulfing a bacterium illustrates
A) pinocytosis.
B) receptor-mediated exocytosis.
C) exocytosis.
D) phagocytosis.
E) receptor-mediated endocytosis.
D
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Why is there partial relaxation in graph (c)?
A) Calcium ion release is slow. B) The muscle is starting to fatigue. C) Stimulation intensity is fluctuating. D) ATP reserves are cycling. E) Nerve stimulation frequency is below maximum.
A transport maximum is associated with carriers that perform ____________________ or ____________________ in the cell membrane
Fill in the blank(s) with correct word
Mammals have a cold-gated channel that is structurally similar to the heat-gated channel used by pit vipers to locate their prey
Indicate whether the statement is true or false
What type of muscle tissue functions to pump blood out of the heart?
A) smooth B) cardiac muscle C) single-unit skeletal muscle D) skeletal muscle