Integral proteins in biological membranes________.
a. lack any 3-D structure.
b. have no known function in membranes.
c. are usually transmembrane proteins.
d. are on the outside of the bilayer.
e. are not bound to the bilayer.
Answer: c. are usually transmembrane proteins.
You might also like to view...
Select the incorrect statement about muscle and muscle fibers.
A. Long distance runners tend to have more slow-twitch muscle fibers than fast-twitch fibers. B. A quick contraction and relaxation of an isolated skeletal muscle is called tetanus. C. Fast-twitch fibers have fewer capillaries and mitochondria than slow-twitch fibers. D. Slow-twitch muscle fibers have high concentrations of myoglobin. E. Fast-twitch fibers increase in size with resistance training.
The showy feathers of a male peacock versus the plain feathers of a female peacock is an example of
A. sexual dimorphism. B. animal cognition. C. habituation. D. distraction display. E. piloting.
Why is anal sex more apt to transfer HIV than vaginal sex? What will be an ideal response?
Which of the following amino acids are most frequently phosphorylated by protein kinases in the cytoplasm during signal transduction?
A) tyrosines B) glycine and histidine C) serine and threonine D) glycine and glutamic acid