Top 50+ Solved GI-Digestion-Absorption-Metabolism MCQ Questions Answer

From 16 to 30 of 30

Q. Aldosterone is secreted by:

a. zona reticularis

b. zona fasciculata

c. zona glomerulosa

d. zona fasciculata and reticularis

e. zona glomerulosa and fasciculata

  • c. zona glomerulosa

Q. Regarding aldosterone:

a. it is released in response to hypokalaemia

b. it has glucocorticoid action

c. it works via G proteins to increase Na+ reabsorption

d. its release results in alkaline urine

e. it is highly protein-bound

  • b. it has glucocorticoid action

Q. Calcitonin secretion is increased by:

a. gastrin

b. CCK

c. secretin

d. glucagon

e. all of the above

  • e. all of the above

Q. All of the following bind to intracellular receptors EXCEPT:

a. cortisol

b. aldosterone

c. 1,25-DHCC

d. parathyroid hormone

e. thyroxine

  • d. parathyroid hormone

Q. All of the following are high energy phosphate compounds EXCEPT:

a. adenosine triphosphate

b. glucose 6-phosphate

c. creatine phosphate

d. adenosine diphosphate

e. guanosine triphosphate

  • b. glucose 6-phosphate

Q. Under aerobic conditions, 1mol glucose forms:

a. 2mol ATP

b. 8mol ATP

c. 16mol ATP

d. 38mol ATP

e. 42mol ATP

  • d. 38mol ATP

Q. The approximate ratio of fat : CHO energy stores is:

a. 2 : 1

b. 4 : 1

c. 10 : 1

d. 20 : 1

e. 40 : 1

  • e. 40 : 1

Q. Nutritionally essential amino acids include:

a. glycine

b. serine

c. lysine

d. glutamine

e. tyrosine

  • c. lysine

Q. Uric acid is formed by the breakdown of:

a. purines

b. pyrimidines

c. glutamine

d. urea

e. all of the above

  • a. purines

Q. The LDL contains which aproprotein?

a. A

b. B-48

c. B-100

d. C

e. E

  • c. B-100

Q. Regarding cellular metabolism of cholesterol:

a. it inhibits HMG-CoA red???

b. is processed in part to other cholesterol esters by the enzyme acetyl CoA ??? acyltransferase

c. it inhibits the formation of CO2 receptors

d. all of the above

e. none of the above

  • d. all of the above

Q. Which of the following substances decreases the activity of hormone-sensitive lipase?

a. adrenaline

b. thyroxine

c. serotonin

d. TSH

e. prostaglandin E

  • e. prostaglandin E

Q. Chromium deficiency leads to:

a. insulin resistance

b. hypogondal dwarfism

c. anaemia

d. changes in ossification

e. thyroid disorder

  • a. insulin resistance

Q. Vitamin B1 (thiamine) deficiency leads to:

a. anaemia

b. beri beir

c. convulsions

d. dermatitis

e. pellagra

  • b. beri beir
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