To which of the following substances would the taste buds be most sensitive?
A. Jelly
B. Salt water
C. Vinegar
D. Syrup
E. Quinine (tonic) water
Answer: E
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Microfilaments, intermediate filaments and microtubules are all components of a cell's
a) cytoskeleton. b) nucleus. c) plasma membrane. d) flagella. e) ribosome.
Sympathetic fibers originate from ____________________ and ____________________ spinal nerves
Fill in the blank(s) with correct word
The family of chemical messengers that causes the pain and discomfort of menstruation are ___________.
A) ADH B) progesterones C) prostaglandins D) steroids
Troponin, a major protein in thin filaments, is a globular protein with three polypeptide subunits. Which of the following is NOT a function of the troponin?
A. One subunit binds to calcium ions. B. One subunit attaches troponin to actin. C. One subunit binds tropomyosin and helps position it on actin. D. One subunit binds to potassium ions.