Biology Forums - Study Force

Hyperventilation is usually accompanied by a(n)
 
  A) increase in blood CO2 concentration and a drop in pH.
  B) increase in blood CO2 concentration and a rise in pH.
  C) decrease in blood CO2 concentration and a drop in pH.
  D) decrease in blood CO2 concentration and a rise in pH.

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(Question 2) Thirst is triggered when total body water decreases by as little as
 
  A) 58 B) 1. C) 25. D) 10.

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(Question 3) A decrease in the glomerular capsule hydrostatic pressure will _____ the rate of
  glomerular filtration.
 
  A) decrease B) have a variable effect on
  C) increase D) not change

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(Question 4) The epithelium of the seminiferous tubules consists of
 
  A) interstitial cells and sustentacular cells.
  B) adipose cells and chondrocytes.
  C) spermatogenic cells and sustentacular cells.
  D) spermatogonia and spermatids.

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(Question 5) Carbon dioxide is sometimes added to the air that a patient breathes in order to
 
  A) decrease the rate and depth of breathing.
  B) increase the rate and decrease the depth of breathing.
  C) increase the rate and depth of breathing.
  D) decrease the rate and increase the depth of breathing.

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(Question 6) ADH level in nephrons regulates water output by causing
 
  A) the distal convoluted tubule and collecting duct to reabsorb more or less sodium
  ions.
  B) the distal convoluted tubule and collecting duct to reabsorb more or less water.
  C) the glomerulus and proximal convoluted tubule to filter less or more water.
  D) the glomerular capsule and nephron loop to absorb more or less water.

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(Question 7) An adaptation of the epithelial cells of the proximal convoluted tubule for reabsorption is
 
  A) secreting enzymes that activate absorption of substances.
  B) rugae folds that increase surface area.
  C) microscopic projections called microvilli.
  D) thin walls.

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(Question 8) Which of the following regimens should lead to the loss of one pound of fat in one
  week?
 
  A) eating 250 calories less a day and not exercising.
  B) burning 1,000 calories a day swimming, or eating 1,000 fewer calories a day.
  C) burning 500 calories a day running or eating 500 fewer calories a day.
  D) burning 1,000 calories on each of three days with exercise and eating an extra 200
  calories a day.

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(Question 9) The gubernaculum guides the testis through the ________ canal.
 
  A) penile B) pelvic C) seminiferous D) inguinal

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(Question 10) The chemoreceptors in the carotid and aortic bodies are most sensitive to changes in
  blood concentration of
 
  A) oxygen. B) bicarbonate ions.
  C) carbon dioxide. D) hydrogen ions.

1) D

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2) B

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3) C

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4) C

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5) C

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6) B

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7) C

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8) C

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9) D

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10) A

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