In studies done in rats, serotonin:
(a) shifted food preferences towards fatty foods
(b) increased the amount of food consumed during each meal rather than increasing the number of meals
(c) enabled rats to resist the powerful attraction of highly palatable cafeteria diets
(d) reduced the volume of food consumed during each meal by shifting food preferences toward fatty foods
(c) enabled rats to resist the powerful attraction of highly palatable cafeteria diets
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How is the coma of a comet produced?
a. Rocky material breaks off from the comet to form the coma. b. The coma is a cloud of particles that the comet has swept up in its orbital path. c. Ices vaporize to become gas that forms the coma around the comet. d. Particles in the solar wind get caught in the comet's magnetic field to form the coma.
Capsid proteins are synthesized during which phase of viral replication?
A. replication B. biosynthesis C. assembly D. proteination E. All of these are correct.
Figure 31.14
The bracket indicated by the letter "A" in the accompanying figure is ____.
A. the epidermis B. a sweat gland C. the dermis D. the hypodermis E. a hair follicle
The box numbered 2 represents which process?
A) cycling of energy
B) decomposers acting on all parts of the system
C) cycling of matter
D) gases in the atmosphere that can block sunlight