The membrane on the surface of a lung is called the
A) parietal pericardium. B) parietal pleura.
C) visceral pleura. D) visceral pericardium.
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Question 2) Which of the following best describes the interaction between an enzyme and its
substrate?
A) The enzyme temporarily deactivates the substrate.
B) The enzyme surrounds and completely contains the substrate.
C) The substrate surrounds and completely contains the enzyme.
D) Part of the enzyme temporarily binds part of the substrate molecule.
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Question 3) A chemical reaction in which parts of different molecules trade positions is a(n)
A) reversible reaction. B) synthesis reaction.
C) decomposition reaction. D) exchange reaction.
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Question 4) Bone cells form concentric circles around longitudinal tubes called
A) osteons. B) lacunae.
C) central canals. D) canaliculi.
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Question 5) Which of the following organs is in the abdominopelvic cavity?
A) The thymus B) The liver C) The heart D) The trachea
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Question 6) Injections that are administered into the tissues of the skin are called
A) hypodermic. B) intramuscular.
C) subcutaneous. D) intradermal.
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Question 7) The basic steps of an enzyme-catalyzed reaction are:
A) enzyme and product combine, forming an E-P complex. The reaction reverses,
enzymes are released, and the unchanged substrate is released and recycled.
B) substrate, enzyme, and product combine, forming an S-E-P complex. The reaction
occurs, enzymes are released, and the unchanged enzyme is released and recycled.
C) substrate and enzyme combine, forming an E-S complex. The reaction occurs,
products are released, and the unchanged enzyme is released and recycled.
D) substrate and product combine, forming an S-P complex. The reaction occurs,
enzymes are released, and the unchanged substrate is released and recycled.
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Question 8) The difference in hydrogen ion concentration between solutions with pH 4 and pH 5 is
A) twentyfold. B) fivefold. C) tenfold. D) twofold.
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Question 9) The name of an enzyme ends in
A) -ase. B) -gen. C) -ese. D) -ose.
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Question 10) Cartilage tissues are likely to be slow in healing following an injury because
A) chondrocytes cannot divide.
B) chondrocytes do not have direct blood supplies.
C) cartilage cells are immersed in fluids.
D) the intercellular material is semisolid.
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