Chapter 1. The Cell as a Unit of Health and Disease
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1 The nucleus
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, which is essential for function and
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survival of the cell. y y y
A) is the site of protein synthesis y y y y y
B) contains the genetic code y y y
C) transforms cellular energy y y
D) initiates aerobic metabolism y y
2 Although energy is not made in mitochondria, they are known a
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s the power plants of the cell because they:
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A) contain RNA for protein synthesis. y y y y
B) utilize glycolysis for oxidative energy.
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C) extract energy from organic compounds.
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D) store calcium bonds for muscle contractions.
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3 Although the basic structure of the cell plasma membrane is for
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med by a lipid bilayer, most of the specific membrane function
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s are carried out by:
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A) bound and transmembrane proteins. y y y
B) complex, long carbohydrate chains. y y y
C) surface antigens and hormone receptors.
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D) a gating system of selective ion channels.
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4 To effectively relay signals, cell-to-
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cell communication utilizes chemical messenger systems tha
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t:
A) displace surface receptor proteins. y y y
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