1. The marked hyperglycemia in DKA causes a. hypokalemia b. all answer shown are

ID: 59275 • Letter: 1

Question

1. The marked hyperglycemia in DKA causes

a. hypokalemia

b. all answer shown are correct

c. excessive loss of water and dehydration

d. an osmotic diuresis

e. hyponatremia

2. Which of the following statements about the coenzyme FAD is INCORRECT?

a. FADH2 is an important allosteric inhibitor of the TCA Cycle

b. It accepts single electrons

c. It is very reactive in solution

d. The TCA cycle enzyme that transfers electrons to FAD is found in the inner mitochondrial membrane

e. It remains tightly bound to the holoenzyme

3. which of the following statement regarding elecctron accepting coenzymes is INCORRECT

a. FAD accepts electrons as the hydrogen atom

b. FAD (H2) is synthesized from the vitamin riboflavin

c. NADH is the reduced form of the coenzyme

d. The Delta G for the oxidation of NADH by the electron transport chain is negative

e. The electrons donated to these coenzymes are subsequently removed by the enzymes

4. Which of the following statements are TRUE concerning cyanide poisoning?

a. cyanide disrupts the ability of the body's cells to use oxygen

b. cyanide causes the cells to suffocate

c. cyanide causes cell death by grossly hampering oxygen metabolism at the cell level

d. all answers shown are correct

e. a lethal dose of potassium or sodium cyanide is approximately 200 mg to 300 mg of hydrocyanic acid or approximately 50 mg of hydrocyanic acid

5. Cyanide is rare but potentially deadly poison which

a. is highly toxic because it inhibits the oxidative processes of the cells

b. is rapidly absorbed from the stomach, lungs, mucosal surfaces, and unbroken skin

c. all of the above are correct statements about cyanide poisoning

d. acts as a cellular asphyxiant

e. produces its effects in seconds when inhaled, and after about 30 minutes after oral absorption

1. b

2. b, e

3. a

4. d

5. d

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