The movement of both oxygen and carbon dioxide in the body is accomplished by
a. exocytosis and endocytosis.
b. bulk flow.
c. osmosis.
d. diffusion.
e. facilitated diffusion.
D
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The hemocyanin of arthropods and molluscs differs from the hemoglobin of mammals in that _____
A) the oxygen dissociation curve for hemocyanin is linear B) hemocyanin carries appreciably more carbon dioxide C) hemocyanin has protein coupled to copper rather than to iron D) the protein of hemocyanin is not bound to metal E) hemocyanin includes cyanic acid
Which organs can use fatty acids as an energy source?
What will be an ideal response?
Green and yellow wavelengths of light are useless to most plants.
a. true b. false
Which of the following is a feature of plant cell division that distinguishes it from animal cell division?
A) formation of a cell plate B) formation of a cleavage furrow C) lack of cytokinesis D) production of four (rather than two) new cells per mitotic division