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Please help answer questions 1-5 If a reaction is in equilibrium: A. Q = Keq B.

ID: 521381 • Letter: P

Question

Please help answer questions 1-5

If a reaction is in equilibrium: A. Q = Keq B. The change in free energy (delta G) must be positive C. The change in free energy (delta G) must be negative D. The change in standard free energy (delta G degree') must be negative E. The change in standard free energy (delta G degree') must be 0 Binding epinephrine to __________ receptors decrease the synthesis of intracellular cAMP A. G_s B. G_i C. G_q D. Binding of epinephrine to any of the above will have the same effect E. None of the above All of the following statements describe how insulin stimulates storage of fatty acids in adipose EXCEPT: A. Stimulates the expression of lipoprotein lipase releasing fatty acids from lipoproteins B. Stimulates the expression of GLUT4 which bring glucose required for the synthesis of fat C. Through the action of protein phosphatase 1 (PP1), it inhibits the hormone-sensitive lipase D. Stimulates the enzyme glycerol kinase needed to synthesize glycerol-3-P from glycerol An enzyme with a Km for its substrate of 10 mu M will be: A. Inactive when [S] is above Km B. 50% saturated at [S] = 10 mu M C. reaching its Vmax at [S] = 20 mu M D. none of the above The graph on the right shows the impact of ATP of PFK activity. By looking at the graph you conclude that: A. ATP activates the enzyme B. ATP increases the Km of the enzyme for its substrate C. ATP favors the R configuration for this enzyme D. All of the above E. None of the above

Explanation / Answer

1. If a reaction is at equilibrium,

A. Q = Keq

2. Binding beta adrenergic receptors...decreases synthesis of intracellular cAMP

B. Gi

3. Insulin stimuated storage of fatty acids in adipose, true statements except,

D.

4. An enzyme with Km 10 uM will be:

B. 50% saturated at [S] = 10 uM

5. Graph on the right showing the impact of ATP of PFK activity. From the graph we can conclude that,

D. All of the above