How many times do G protein–linked receptors loop back and forth through the plasma membrane?
a. once
b. twice
c. three
d. seven
e. eleven
d
Biology & Microbiology
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A solute is a ________
a. measure of molecular motion b. dissolved substance c. substance that can release Hydrogen ions d. liquid that can dissolve other substances e. compound that can be dissolved easily in water
Biology & Microbiology
Sensory signals that trigger release of saliva are an example of how the nervous system works with
which other system? a. endocrine b. cardiovascular c. sensory d. digestive e. muscular
Biology & Microbiology
Lethal mutations can be recovered in bacteria if they are ________.
A. active B. conditional C. dominant D. None of the choices are correct.
Biology & Microbiology
Which molecule is synthesized as a copy of a gene on the DNA template strand?
A. Ribosomal RNA B. Messenger RNA C. Transfer RNA D. Primer RNA E. Ribozymes
Biology & Microbiology