Which hormone is secreted by alpha cells of the pancreas in response to hypoglycemia?
A. glucagon
B. insulin
C. glucose
D. cortisol
E. glycogen
A. glucagon
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The place(s) in the human ear where sound waves
are amplified by means of the vibrations of tiny bones is a. the pinna. b. the auditory canal. c. the middle ear. d. the organ of Corti. e. all of these.
Activation of the complement cascade __________.
A) reduces swelling in affected tissues B) prevents cleavage of complement proteins such as C3 and C5 C) can cause the infecting microbe to be killed by lysis D) can reduce inflammation E) typically reduces the ability of phagocytes to engulf microbes
Which statement concerning phytochrome-induced responses is false?
a. All responses are very rapid and short-term. b. Red light causes potassium channels to open. c. The absorption of light by one part of the phytochrome molecule triggers a conformational change in another part. d. Phytochrome activates transcription of the gene for a subunit of rubisco. e. Far-red light causes potassium channels to close.
Which of the following is a function of the skin?
A. protecting underlying body parts from physical trauma B. preventing water loss C. monitor touch, pressure, temperature, and pain D. thermoregulation E. All of the answer choices are functions of the skin