Activated G protein-coupled receptors can ____________.
a. bind GTP
b. open an ion channel
c. raise cytosolic calcium
d. a and b are correct
e. a, b and c are correct
Answer: e. a, b and c are correct
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Which of the following statements is NOT
correct about autosomes?
a. Autosomes are chromosomes that are found in both males and females. b. In a human cell, all chromosomes are autosomes, except chromosomes "X" and "Y." c. In birds, moths, and butterflies, autosomes determine the sex of the individual. d. A characteristic carried by autosomes would be passed to offspring males and females. e. More than one of these statements is incorrect.
California retains only about __________ percent of
its original coastal redwoods. a. 1 b. 4 c. 10 d. 15 e. 20
In what stage of translation does the peptide bond join two amino acids?
a. initiation b. transcription c. elongation d. reparation e. termination
Salmon are able to live in both fresh water and salt water. Salmon are therefore:
A. conformers. B. effectors. C. regulators. D. conditioned.