One of the reasons that most animal cells will not burst if too much water enters by osmosis is that
a. the cell wall will protect it.
b. the cytoplasm exerts pressure against the plasma membrane.
c. carrier proteins will remove excess water.
d. solute molecules will resist water molecules.
e. salts will absorb the water.
B
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The activity of acetylcholine in a synapse is terminated by its_____
A) active transport across the presynaptic membrane B) diffusion across the presynaptic membrane C) active transport across the postsynaptic membrane D) diffusion across the postsynaptic membrane E) degradation on the postsynaptic membrane
During DNA replication, which enzyme removes the RNA primers and then fills in the gap?
A. DNA pol I B. DNA primase C. DNA pol III D. DNA ligase
The volume of blood pumped out of a ventricle with each heartbeat is known as ________.
a) pressure (BP) b) heart rate (HR) c) cardiac output (CO) d) stroke volume (SV)
What is the composition of the tunic that covers the outer body of urochordates?
a. protein b. calcium c. carbohydrate d. cholesterol