Odorant receptors couple to G-proteins via their specific Galpha subunit. The Od

Question

Odorant receptors couple to G-proteins via their specific Galpha subunit. The Odor (ligand) forces a change in the protein, thus allowing Galpha subunit to bind GTP subunit, which is then free to bind to Adenylate Cyclase. The reaction terminates when Galpha-GTP cleaves GTP into GDP. (TRUE or FALSE)

-Rhodopsin couples to G-proteins via their specific Galpha subunit. The ligand, 11-cis retinal, forces a change in the protein, thus allowing Galpha subunit to bind GTP subunit, which is then free to bind to Phosphodiesterase effector molecule. The reaction terminates when Galpha-GTP cleaves GTP into GDP. (TRUE or FALSE).

-Axons to project together within the brain due to chemoattractants located at great distances from the growth cone. (TRUE or FALSE)

-Ig domains found in IgCAMs are formed by alternative splicing from the Ig domains within immunoglobin receptor genes. (TRUE or FALSE).

Explanation / Answer

1.

False

Odorant receptors do not couple to G-proteins via their specific Galpha subunit.

2.

True

3.

True

4.

False

tail is generated by alternative splicing variants (CAR1/CAR2) of axon

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