Ch. 22

33問 • 16日前

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A solution with a pH of 4 a. would be considered an acid solution. b. would have more hydroxide ions than hydrogen ions. c. would be less acidic than a solution with a pH of 2. d. Both A and C are correct.

A solution with a pH of 8 a. would be considered an alkaline solution. b. would have fewer hydroxide ions than hydrogen ions. c. would be more acidic than a solution with a pH of 6. d. Both A and C are correct.

A substance that prevents sharp changes in the pH of a solution when an acid or base is added is called a a. ketone. b. neutralizer. c. bicarbonate. d. buffer.

Which of the following does not occur in blood as a result of buffering of fixed acids in tissue capillaries? a. The amount of H2CO3 in blood increases slightly. b. The amount of bicarbonate in blood decreases. c. Blood pH increases slightly. d. The H+ concentration of blood increases slightly.

Which of the following statements is true regarding the pH of blood? Arterial blood has a. a pH of 7.35, and venous blood has a pH of 7.45. b. a pH of 7.45, and venous blood has a pH of 7.35. c. the same pH as venous blood (7.35). d. the same pH as venous blood (7.45).

The accumulation of these acidic substances is a result of excessive metabolism of fats. a. Buffers b. H+ c. Ketone bodies d. CO2

A solution with a pH of 2 would have a. one hundred times more hydrogen ions than a solution with a pH of 4. b. twice as many hydrogen ions than a solution with a pH of 4. c. one hundred times fewer hydrogen ions than a solution with a pH of 4. d. half as many hydrogen ions than a solution with a pH of 4

When respiration is decreased, CO2 content a. increases, H2CO3 increases, and pH increases. b. decreases, H2CO3 decreases, and pH increases. c. increases, H2CO3 increases, and pH decreases. d. decreases, H2CO3 increases, and pH decreases.

A decrease in blood pH below normal (acidosis) tends to a. stimulate increased respirations. b. inhibit respirations. c. prolong hypoventilation. d. None of these is correct.

Anything that causes an excessive increase in respirations will in time produce a. acidosis. b. ketone bodies. c. alkalosis. d. diabetic ketoacidosis.

The body's last and best defense against wide variations in blood pH is the a. liver. b. lungs. c. interstitial fluid. d. kidneys.

When a hydrogen ion diffuses out of the tubule cell into the urine, it replaces one of the sodium ions to form __________, which leaves the body in the urine. a. a buffer b. a salt c. carbonic acid d. a bicarbonate

Disturbances in the acid-base balance can be dependent on the relative ratio of a. CO2 and O2. b. CO2 and H2CO3. c. NaHCO3 and H2CO3. d. H2CO3 and CO2.

Blood levels of NaHCO3 are regulated by the kidneys while H2CO3 levels are regulated by the a. lungs. b. liver. c. interstitial fluid. d. urinary system.

The condition that occurs as a result of blood levels of NaHCO3 decreasing, thus resulting in a lower ratio of NaHCO3 to H2CO3, is called a. compensated metabolic acidosis. b. uncompensated metabolic alkalosis. c. compensated metabolic alkalosis. d. uncompensated metabolic acidosis.

When carbon dioxide reacts with water in the blood, it forms a. carbonic anhydrase. b. carbonic acid. c. sodium bicarbonate. d. carbaminohemoglobin.

If one half of a buffer pair is NaHCO3 the other half would be a. Na2CO3. b. OH-. c. H2CO3. d. H+.

A solution with a pH of 10 would have a. 100 times more hydrogen ions than a solution with a pH of 8. b. 100 times more hydroxide ions than a solution with a pH of 8. c. 10 times more hydrogen ions than a solution with a pH of 8. d. 10 times more hydroxide ions than a solution with a pH of 8.

The normal ratio of sodium hydrogen carbonate to carbonic acid in a buffer system is a. 5:1. b. 10:1. c. 20:1. d. 40:1.

A bicarbonate deficit is also called a. respiratory acidosis. b. respiratory alkalosis. c. metabolic acidosis. d. metabolic alkalosis.

Arterial blood has a higher PH then venous blood True/false

True

Stomach acid has the highest pH in the body True/false

False

Blood leaving the lungs has a lower Co2 concentration than blood entering the lungs True/false

True

The stomach absorbing acid is a mechanism for regulating pH True/false

False

Metabolic acidosis results from a bicarbonate excess True/false

False

Gastric acid pH is.. A. 1.6 (the lowest) the most acidic substance in the body B. Kidneys are the body most effective regulator of blood pH C. 7.45 ( highest in the body) D. substances that prevent sharp change in pH of a fluid when acid or base is added to it.

Arterial blood Ph is A. 1.6 (the lowest) the most acidic substance in the body B. 7.45 ( highest in the body) C. alkalinity or basic solution D. Bicarbonate deficiency

basic A. A solution with a pH of 8 is a... B. Alkalosis results from ? C. Stomach acid has the highest pH in the body D. A solution with a pH lower than 7 indicates...

Compensation mechanisms can quickly counteract a shift in A. False B. True C. PH D. acidity

Buffers are A. substances that prevent sharp change in pH of a fluid when acid or base is added to it. B. alkalinity or basic solution C. 1.6 (the lowest) the most acidic substance in the body D. Kidneys are the body most effective regulator of blood pH

a loss of acid A. Alkalosis results from? B. Arterial blood Ph is C. A solution with a pH of 8 is a... D. pH higher than 7.0 indicates...

venous blood ph is A. basic B. 7.35 C. True D. 7.45 ( highest in the body)

Kidneys A. A solution with a pH lower than 7 indicates... B. The ___ are the body's most effective physiological pH control mechanism C. The stomach absorbing acid is a mechanism for regulating pH D. Arterial blood has a higher PH then venous blood

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Valmau5 · 60問 · 3ヶ月前

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