Question

Question 51

Tubular reabsorption results in solutes entering the ___________; tubular secretion causes solutes to enter the ___________.

Select one:

a. blood; filtrate

b. Distal convoluted tubule; Glomerulus

c. Nephron loop; Renal corpuscle

d. filtrate; blood

Question 52

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Question text

Alcohol acts as a diuretic because it:

Select one:

a. increases the rate of glomerular filtration.

b. inhibits the release of anti-diuretic hormone (ADH).

c. is not reabsorbed by the tubule cells.

d. increases aldosterone secretion from the adrenal cortex.

e. increases secretion of anti-diuretic hormone (ADH).

Question 53

Which of the following is NOT a buffer system of the body?

Select one:

a. Bicarbonate (HCO₃^-)

b. Phosphate (PO₄^2-)

c. Protein

d. Salt (NaCl)

Question 54

Extracellular fluids include all of the following EXCEPT:

Select one:

a. Synovial fluid

b. Plasma

c. Lymph

d. Cytosol

e. Interstitial fluid

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 56

The proximal convoluted tubule is the site of glucose and amino acid reabsorption.

Select one:

True

False

Question 57

When a person consumes a diuretic, this will cause their urine to become very concentrated.

Select one:

True

False

Question 58

Hyponatremia (low levels of sodium) can occur if you drink a LOT of water in a short amount of time.

Select one:

True

False

Question 59

Large molecules such as lipids, carbohydrates, and proteins must undergo catabolic reactions utilizing enzymes. This process is called:

Select one:

a. Secretion

b. Chemical digestion

c. Mechanical digestion

d. Absorption

e. Ingestion

Question 60

Shortly after a fat-filled meal, the gallbladder contracts in response to stimulation by:

Select one:

a. Bile

b. Secretin

c. Insulin

d. Cholecystokinin (CCK)

e. Gastrin

Question 61

In the small intestine, the enzyme ____________ breaks down carbohydrates while the enzyme __________ breaks down lipids.

Select one:

a. Protease; Lipase

b. Pepsin; Bile

c. Amylase; Lipase

d. Amylase; Bile

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 63

Both glucose and fatty acids can be converted into ________, which is needed in the citric acid (Krebs) cycle.

Select one:

a. acetyl CoA

b. lactate

c. glycerol

d. None of the above - they go through different metabolic processes

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

Question 66

The tongue is attached to the floor of the mouth by the lingual frenulum.

Select one:

True

False

Question 67

Excess protein can be stored in our muscles until it is needed to make ATP.

Select one:

True

False

Question 68

The final electron acceptor during aerobic metabolism is oxygen.

Select one:

True

False

Question 69

Why is a sperm cell considered a "stripped down cell"?

Select one:

a. It lacks a nucleus.

b. It does not need nutrients to survive.

c. It does not contain genetic information.

d. It lacks most cellular organelles.

Question 70

Which of the following is correctly matched with its function?

Select one:

a. Testes - location of sperm production

b. Seminal vesicles - secret a very acidic solution

c. Bulbo-urethral glands - located on either side of the male urethra

d. Prostate gland - provides a secretion that externally lubricates the male genitals prior to intercourse

e. Epididymis - where urine enters from urinary bladder

Answer 1

Ans 51.

Tubular reabsorption results in solutes entering the blood from the tubules;

tubular secretion causes solutes to enter the filtrate

Ans 52. Alcohol act as a diuretic because it:

inhibits the release of anti-diuretic hormone (ADH).

Due to inhibition of ADH diluted urine is produced by kidney, hence it increases the urinary volume

Question 53

Which of the following is NOT a buffer system of the body?

d. Salt,

Buffer resists the change in PH from addition of acid or base.

Bicarbonate (HCO3-) is an important Extracellular buffer while Phosphate (PO42-) and Proteins are important intracellular buffer in body.

Ans. 54

Extracellular fluids include all of the following EXCEPT:

d. Cytosol

Cytosol is the fluid which is present inside the cells, hence it's an intracellular fluid.

Kindly post other questions separately