Oxygen crosses a plasma membrane by
A) osmosis.
B) active transport.
C) endocytosis.
D) passive transport.
Answer: D
You might also like to view...
What do G-protein coupled, enzyme-linked, and ligand-gated ion channel receptors have in common?
A. They associate with a protein bound to GDP or GTP. B. They are all linked to protein kinase activation. C. They change their conformation when bound to a hormone. D. They open ion channels. E. They bind similar hormones.
The antiviral drugs currently approved for use in HIV disease include ________.
A. protease inhibitors B. nonnucleoside reverse transcriptase inhibitors C. fusion inhibitors D. nucleoside reverse transcriptase inhibitors E. All of the choices are correct.
Dim light causes the pigment ________ in rods to change shape, which causes sodium channels on the photoreceptor cell to close and activate ganglion cells
Fill in the blank(s) with correct word
An example of commercial harvest is the introduction of a foreign species into an area where it is not native. Indicate whether the statement is true or false