Large carbohydrates are formed from smaller units called
A. lipids.
B. phosphate groups.
C. amino acids.
D. monosaccharides.
E. steroids.
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Question 2) Which of the following is a carbohydrate?
A. animal fat
B. triglyceride
C. sucrose
D. cholesterol
E. hemoglobin
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Question 3) Normal pH for blood is 7.35 to 7.45. Maintenance of the pH in this range is
A. critical because enzymes work best within narrow ranges of pH.
B. not critical because extreme pH values do not affect enzyme function.
C. called denaturation.
D. not required.
E. None of these choices is correct.
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Question 4) What particle is formed when an acid loses a proton (H+)?
A. conjugate base
B. buffer
C. conjugate acid
D. salt
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Question 5) The pH value
A. is determined by the concentration of hydrogen ions.
B. decreases with alkalinity.
C. is measured on a scale from 0 to 10.
D. reflects the sodium content of body fluids.
E. increases with acidity.
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Question 6) Solution A has a pH of 10 and solution B has a pH of 2. Which of the following statements about these solutions is true?
A. Solution A is acidic.
B. Solution B has a higher hydrogen ion concentration than solution A.
C. Solution A and solution B are both basic.
D. Solution A has a higher hydrogen ion concentration than solution B.
E. Solution B is basic.
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Question 7) A buffer will
A. enhance changes in the pH of the solutions.
B. make a solution more acidic.
C. make a solution more basic.
D. have no effect on the pH of the solutions.
E. resist drastic changes in the pH of the solutions.
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Question 8) Normal blood pH is maintained within a range of
A. 6.5 - 9.5.
B. 4.5 - 5.5.
C. 1.0 - 14.0.
D. 7.35 - 7.45.
E. 7.35 - 8.5.
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Question 9) A base is a proton
A. donor.
B. converter.
C. acceptor.
D. creator.
E. Both acceptor and creator.
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Question 10) Which of the following is a proton donor?
A. a salt
B. a base
C. a neutral substance
D. an acid
E. glucose
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