A G protein is
A. a molecule that binds a guanine nucleotide and helps transduce a signal inside a target cell.
B. a type of water-soluble hormone.
C. a second messenger activated by a steroid hormone.
D. an enzyme that catalyzes the conversion of ATP into cyclic AMP.
E. a receptor for a water-soluble hormone that causes arachidonic acid to be extracted from a phospholipid.
Answer: A
You might also like to view...
________ cells are located in the inner cellular layer of the periosteum
A) Osteocyte B) Osteoclast C) Osteoid D) Osteogenic E) Osteolytic
____ are adhering junctions, ____ are impermeable junctions, and ____ are communicating junctions
a. tight junctions, gap junctions, desmosomes b. desmosomes, gap junctions, tight junctions c. desmosomes, tight junctions, gap junctions d. gap junctions, tight junctions, desmosomes e. none of these answers.
Which plexus is formed from the ventral rami of nerves L4 to S4?
A. Brachial B. Lumbar C. Cervical D. Pelvic E. Sacral
How many electrons are in the outermost shell of an atom with 15 electrons?
A) 5 B) 2 C) 8 D) 10