What does a ligand-gated channel do?
A. It binds small, nonpolar signaling
molecules.
B. It activates a G protein.
C. It allows for the movement of ions across
the plasma membrane.
D. It triggers the activity of a phosphatase.
C
You might also like to view...
Which of the following best describes cyanobacteria?
A. They all can use H2S as a source of electrons for photosynthesis. B. Their photosynthetic pigments are carried in chlorosomes. C. They carry out anoxygenic photosynthesis. D. They carry out oxygenic photosynthesis.
When you collect a sand dollar on the beach, you are looking at the shell of an echinoderm consisting of ossicles
formed from calcium carbonate crystals.
Indicate whether the statement is true or false.Select the enzyme that does not match the reaction:a
sucrase?splits sucrose into glucose and fructose b. lipase?breaks ester linkages c. phosphatase?removes phosphate groups d. urease?converts urea to ammonia and CO2 e. kinase?breaks peptide bonds
Answer the following questions true (T) or false (F)
1. All autoimmune diseases have a genetic cause. 2. Clostridium perfringens may cause necrotizing fasciitis. 3. M protein is an antiphagocytic factor produced by Streptococcus pyogenes.