In contrast to a G protein-linked receptor and an enzyme-linked receptor, a channel-linked receptor:a
is located on the cell surface.
b. is composed of seven alpha helices.
c. couples signaling molecules to signal transduction pathways.
d. is a ligand-gated channel.
e. functions as a tyrosine kinase.
D
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Fungi form functional associations with which of the following?
A. Phototrophic microbes B. Plant roots C. Plant roots and phototrophic microbes D. Animals
The nucleotide that serves as an energy carrier in cells is _____
a. trans fat b. ATP c. DNA d. glycogen e. RNA
The main purpose of preparing karyotypes is to ____
a. prepare for gene extractions b. determine gender c. determine which genes are on which chromosomes d. separate DNA into its component parts e. diagnose or rule out certain genetic disorders
Some sharks and tunas possess a ________, a blood circulation system that allows them to keep internal temperatures higher than external temperatures
Fill in the blank(s) with correct word