Question

Question 55

Increased release of aldosterone will cause:

Select one:

a. increased release of ADH

b. None of these: aldosterone only causes a change in blood pressure

c. increased potassium excretion in urine

d. decreased release of angiotensin

e. increased blood calcium levels

Question 62

Which of the following statements correctly describes the regulation of gastric secretion?

Select one:

a. The sight and smell of food does not increase gastric secretion - only the physical act of eating food.

b. Gastric secretion is inhibited by distension (stretching) of the stomach.

c. Activation of the sympathetic nervous system (i.e. fight or flight) will inhibit gastric secretions.

d. The presence of food (chyme) in the duodenum will always inhibit gastric secretions.

e. All of the above are true.

Question 64

The greatest amount of ATP production occurs during ___________ when the compounds ___________ release their electrons.

Select one:

a. Electron transport chain; NADH & FADH₂

b. Glycolysis; pyruvate & lactate

c. Citric acid (Krebs) cycle; CO₂ & H₂O

d. Deamination; urea & ammonia

e. Beta-oxidation; acetyl CoA & ketone bodies

Question 65

Basal metabolic rate (BMR) can be increased if you:

Select one:

a. Increase your lean body (i.e. muscle) mass

b. Go on a diet

c. Are asleep

d. Have low levels of thyroid hormone

e. All of the above increase BMR

Answer 1

55. b. None of these: aldosterone only causes a change in blood pressure

Explanation

The increased release of the aldosterone from the adrenal cortex induced by the angiotensin II,increases the sodium ion reabsorption and water accumulation which causes increase in the blood pressure. The angiotensin II also contrict the blood vessels which increases the ADH secretion and helps in elevation of blood pressure.

56.d. The presence of food (chyme) in the duodenum will always inhibit gastric secretions.

Explanation-

The entry of chyme in the duodenum activates the receptors ,which causes inhibition of  the gastric secretions .Thus, intestinal phases of gastric function is inhibitory in nature. The sight and smell increases the salivary gland secretion.The streching of the stomach causes release of the gastric secretion.The gastric secretion is controlled by the parasympathetic nervous system.

64. The greatest amount of ATP production occurs during _Electron transport chain when the compounds NADH & FADH2 release their electrons.

Explanation - 34 ATP get released by the electron transport chain when NADH and FADH2 release their electrons where as in Glycolysis and kreb cycle ,only 2 ATP gets released.

65.a,Increase your lean body (i.e. muscle) mass

The lean body mass and less fat diet and proper sleep induces the body metabolic rate whereas increased thyroid hormone causes increase in BMR.