The olfactory receptors discovered by Richard Axel and Linda Buck are members of a large family of similar receptor molecules termed
A. intracellular receptors.
B. ligand-gated ion channels.
C. voltage-gated ion channels.
D. G-protein coupled receptors.
E. serine/threonine proteases.
Answer: D
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An individual who is at risk of passing a genetic defect onto his or her offspring would most likely undergo ____
a. genetic testing b. genetic screening c. enzyme replacement therapy d. preimplantation genetic diagnosis (PGD) e. amniocentesis
The nictitating membrane of sharks is used to:
a. protect the gills. b. line the mouth. c. enclose the internal organs. d. detect smells. e. cover the eye.
GENETIC DRIFT IS THE RESULT OF _____
Fill in the blank(s) with the appropriate word(s).
Miller's experiment showed that life could arise via chemical evolution.
Answer the following statement true (T) or false (F)