Many microbes use pyruvate carboxylase or phosphoenolpyruvate carboxylase ________.
A. to synthesize oxaloacetate
B. to synthesize acetyl-CoA
C. to synthesize amino acids
D. to synthesize glucose
Answer: A
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The process of evolution ultimately depends on changes that occur in the ________ of organisms
Fill in the blank(s) with correct word
Many, though not all, mollusks have a shell. What secretes the shell?
A) The foot B) The mantle C) The radula D) The visceral mass
Swollen regions of underground stems that store starch are
A. stomata. B. tubers. C. always parasitic. D. rhizomes. E. tendrils.
Answer the following questions true (T) or false (F)
1. Sperm development requires temperatures somewhat cooler than found in the rest of the body. 2. Sperm develop in the seminal vesicles. 3. The male stem cells in sperm production are the spermatogonia.