Which of the following is NOT TRUE of the absorptive period?
A. Glucose absorption from the gut is high.
B. Glucose utilization by cells is high.
C. Fat utilization by cells is high.
D. Synthesis of triglycerides is high.
E. Breakdown of glycogen is low.
C. Fat utilization by cells is high.
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Match the following items with the correct phrases.
_______1. Fixed or tissue ____________________ are called histiocytes. _______2. Like mast cells, these cells release histamine and other chemical mediators during type I hypersensitivity reactions. _______3. Increased numbers of these cells are found in the peripheral blood stream during allergic reactions and helminth infections. _______4. These cells are also called polymorphonuclear leukocytes, polys, or PMNs. _______5. These cells are monocytes rather than granulocytes. a. basophils b. eosinophils c. macrophages d. neutrophils
Red algae can survive in deeper water because
of
a. phycobilins. b. holdfasts. c. chlorophyll a. d. a stonelike cell wall. e. their preference for freshwater habitat.
During the spring, male sage grouse gather in an open area and strut about, erecting their feathers in a fanlike display. They also make booming sounds using their inflated air sacs. The function of this dance is to
A) frighten off smaller birds from the territory. B) select the showiest females and mate. C) attract the attention of females. D) imprint the younger male birds.
The tension-length curve for a muscle fiber is the same as that for a muscle
a. true b. false