Plants require a lot of water for transpiration, metabolism, and photosynthesis. How is water used in photosynthesis?
A. as a substrate for ATP synthase
B. to combine with NADP+ to form NADPH
C. to combine with ADP forming ATP
D. as an electron donor
E. as an electron acceptor
Answer: D
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With few exceptions, we can't use observable traits to measure genetic variation in populations because:
A. observable traits don't vary enough among individuals to measure. B. we can't identify enough observable traits to be useful, even if they could be measured. C. many traits are encoded by large numbers of genes. D. observable traits are products of the environment as well as the genome. E. Many traits are encoded by large numbers of genes, and observable traits are products of the environment as well as the genome.
Which of the following DNA regions is recognized by RNA polymerase during transcription?
A) promoter B) operator C) attenuator D) leader E) structural gene
The malleus is also called the
A) stirrup. B) hammer. C) anvil. D) cochlea. E) pinna.
Among the virulence factors produced by Staphylococcus aureus are hemolysin, coagulase, hyaluronidase, and enterotoxin. Which of these factors contribute to the ability of S. aureus to invade the body?
A. coagulase B. enterotoxin C. hemolysin D. hyaluronidase E. coagulase and hemolysin