How many water molecules are produced during the formation of a triglyceride from fatty acids and glycerol?
A. 3
B. 0
C. 1
D. 4
E. 2
Answer: A
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When guard cells are ________ a stomatal pore opens between them.
A. flaccid B. overextended C. turgid D. solute depleted E. ionically charged
Cell differentiation _____
a. occurs in all complex multicelled organisms b. requires unique genes in different cells c. involves selective gene expression d. occurs in all complex multicelled organisms and involves selective gene expression e. all of these
Which is usually true of bacteria?
A. They are found as rods, spheres, or spirals. B. They reproduce by binary fission. C. They contain rigid cell walls made of peptidoglycan. D. They are found as single cells. E. All of the choices are correct.
Prokaryotes have their genetic information stored in:
a. several small, circular pieces of DNA. b. a single, small, circular piece of DNA. c. a large, linear piece of DNA. d. several small, linear pieces of DNA. e. a large, circular piece of DNA.