The enzyme carbonic anhydrase causes
A) carbon dioxide to react with water.
B) water to react with hydrogen ions.
C) water to react with bicarbonate ions.
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Question 2) Embryonic stem cells are derived from the
A) trophoblast. B) outer cell mass of the morula.
C) inner cell mass of the blastocyst. D) middle layer of the zygote.
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Question 3) Linoleic acid is an essential amino acid.
Indicate whether the statement is true or false
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Question 4) Which of the following metabolic processes releases hydrogen ions to body fluids?
A) Aerobic respiration of glucose B) Anaerobic respiration of glucose
C) All of the above D) Incomplete oxidation of fatty acids
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Question 5) Carbohydrates include cholesterol and phospholipids.
Indicate whether the statement is true or false
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Question 6) Up to ______ of urea is filtered and recycled.
A) 33 B) 55 C) 100 D) 80
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Question 7) The amount of oxygen released from oxyhemoglobin increases when
A) carbon dioxide concentration decreases.
B) carbon dioxide concentration increases.
C) blood becomes more alkaline.
D) temperature decreases.
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Question 8) At the blastocyst stage, the cells are considered
A) pluripotent. B) endodermal.
C) extraembryonic. D) totipotent.
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Question 9) Causes of erectile dysfunction include
A) too much exercise.
B) underlying disease, such as diabetes mellitus.
C) not enough sex.
D) too much sex.
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Question 10) Glycogen in an adult's liver and muscles provides enough reserve energy to meet energy
demands for about 12 hours.
Indicate whether the statement is true or false
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