All of the following statements are true
concerning mycorrhizae EXCEPT that
a. the fungus may penetrate into root cells.
b. mycorrhizae increase the surface area for
absorption.
c. roots obtain minerals from the fungus.
d. the fungus provides the plant with nitrogenrich
compounds.
e. it is a mutualistic symbiosis
D
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The production of glucose by liver cells in response to cortisol is called ____
a. glycolysis b. hypoglycemia c. gluconeogenesis d. glucocorticoids e. glucose sparing
The percentage of cancers associated with an inherited predisposition is approximately _________
A. 5 percent D. 50 percent B. 10 percent E. 75 percent C. 15 percent
Which of the following is an extension of a lobe of the cytoplasm, and is used by some protists for movement?
a. a pilus b. a cilium c. a pseudopod d. a gullet
Skeletons of modern cetaceans have remnants of a __________.
A. rib B. head C. flipper D. pelvis E. spine