Which of the following is considered to be a plant behavior?
A. response to sunlight
B. response to plant hormones
C. response to touch
D. response to gravity
E. all of the choices
E. all of the choices
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A motor unit is
a. a single muscle fiber activated by one neuron. b. the complete set of muscle fibers in a single muscle. c. a single sarcomere. d. a single muscle fiber activated by many neurons. e. a group of muscle fibers activated by one neuron.
Bacterial DNA is primarily compacted by supercoiling and folding. Briefly describe each mechanism
What will be an ideal response?
An individual is moderately dehydrated and reaches for a beer to quench his thirst. Although this person thinks that he is hydrating himself, he is actually causing additional dehydration. Why is this the case?
A) The alcohol in the beer inhibits antidiuretic hormone. B) The alcohol in the beer causes a decrease in sodium reabsorption in the nephron. C) The alcohol in the beer inhibits aldosterone. D) The alcohol in the beer causes an increase in the activity of renin.
All of the following are characteristic of the Group A beta-hemolytic streptococci EXCEPT
A) methicillin resistance. B) M proteins. C) the ability to damage cell membranes. D) the ability to dissolve blood clots. E) hyaluronidase production.