Question

Binding of an agonist to an adrenergic GPCR receptor results in:
A.   The GalphaS subunit dissociating from the Gbeta-Ggamma subunits.
B.   The Gbeta subunit dissociating from the GalphaS-Ggamma subunits.
C.   The Ggamma-subunit dissociating from the GalphaS-Gbeta subunits.
D.   None of the above are correct.
E.   All of the above are correct.

mTORC signaling occurs when:
A.   the cell has an energy deficit and requires more nutrients.
B.   the cell has an adequate supply of nutrients and is in a high-energy state
C.   the muscles are fatigued and require additional oxygen.

In the citric acid cycle, the acetyl-coA is linked to a pre-existing molecule of_______________.
A.   citrate (citric acid)
B.   oxaloacetate
C.   fumarate
D.   succinate
E.   pyruvate

What type of enzyme is required to catabolize an unsaturated fatty acid but not a saturated fatty acid?
dehydrogenase
mutase
hydratase  
isomerase

please answer all of it or it cannot don't answer question

Answer 1

1A. The G alphaS subunit dissociating from the Gbeta-G gamma subunits.

2. B.   the cell has an adequate supply of nutrients and is in a high-energy state

mTOR functions as a serine/threonine-protein kinase that regulates cell growth, cell proliferation, cell motility, cell survival, protein synthesis, autophagy, and transcription.

3.B. Oxaloacetate

In the citric acid cycle, the acetyl group from acetyl CoA is attached to a four-carbon oxaloacetate molecule to form a six-carbon citrate molecule.

4. D. Isomerase

Enoyl-CoA isomerase is involved in the beta-oxidation, one of the most frequently used pathways in fatty acid degradation, of unsaturated fatty acids with double bonds at odd-numbered carbon positions.