Question

1. A drug that can inhibit the release of calcium in cells most likely intervenes in which of the following?
A) Gt
B) Gq
C) Gs
D) RTK (receptor tyrosine kinase)
E) Gi

2. A drug that can inhibit protein kinase A activity in cells most likely intervenes in which of the following?
A) Gt
B) Gq
C) Gs
D) RTK (receptor tyrosine kinase)
E) Gi

3. A drug that can block the alpha 2 adrenergic receptors most likely would affect which of the following?
A) Gt
B) Gq
C) Gs
D) RTK (receptor tyrosine kinase)
E) Gi

4. Which can potentially have hypotonic, hypertonic and isotonic effects on cells (in the body) if they contain the following concentrations 2.5% dextrose & 0.9% NaCl?
A) 0.8% NaCl
B) 0.9 % NaCl
C) 5% dextrose & 0.9% NaCl A
D) 2.5% dextrose & 0.9% NaCl
E) 5% dextrose in water

5. Someone that has polydipsia (increased thirst) and polyuria(increased urine production/voiding) may have damage to which of the following thalamic nucleus?
A) PVN
B) PON
C) SON
D) Arcuate
E) Neither nuclei

6. The initial substrate to manufacture catecholamines (E, NE and Dopamine) is?

A) catechol

B) amines

C) tyrosine

D) cholesterol

E) progesterone

8. The initial substrate to manufacture cortisol is?

A) catechol

B) amines

C) tyrosine

D) cholesterol

E) progesterone

True/False:

9. Electrical synapses exclusively involve vesicles with neurotransmitter for signal transduction.

10. Alpha 2 receptors can be found on presynaptic neurons.

11. Chemical synapses exclusively involve gap junctions for signal transduction.

12. Sodium channels opening drive an action potential in a neuron while leaky potassium channels

Answer 1

1) Correct answer : Option B

A drug that can inhibit the release of calcium in the cells most likely intervenes in Gq

2) Correct answer : Option C

A drug that can inhibit protein kinase A activity in cells most likely intervenes Gs

3) Correct answer : Option E

A drug that can block the alpha 2 adrenergic receptors most likely would affect Gi

4) Correct answer : Option C

At starting 0.9% NaCl with 5% dextrose is hypertonic to 0.9% NaCl with 2.5% dextrose

So when dextrose is absorbed it becomes isotonic and then it becomes hypertonic