What is the function of the contractile vacuole?
A. to help single-celled organisms maintain
homeostasis in a hypotonic environment
B. to help single-celled organisms change
shape in response to environmental changes
C. to help maintain water balance for singlecelled
organisms living in a hypertonic
environment
D. to maintain cell shape through turgor
pressure
Answer Key: A
You might also like to view...
Some archaea have unique phospholipids in their cytoplasmic membrane that
A) form a monolayer due to the presence of diglycerol tetraethers. B) form a bilayer due to the presence of sterols. C) form a stable ring structure due to the presence of crenarchaeol. D) form a bilayer due to the presence of phosphatidylethanolamine.
Which of the following are muscle cells that are active in vasoconstriction and vasodilation of blood vessels?
A. Skeletal muscle cells B. Cardiac muscle cells C. Endocardium D. Smooth muscle
The enzyme that digests protein is ____.
A. ghrelin B. chyme C. pepsin D. sulfuric acid E. lipase
Cardiac output is defined as the volume of blood pumped by a(n) ________ each time it contracts
A) heart B) atrium C) atrioventricular valve D) ventricle