43) The presence of ________ in the plasma membrane can increase the fluidity of the membrane.
A) cholesterolB) integral membrane proteinsC) peripheral membrane proteinsD) glycoproteinsE) phospholipidsAnswer: ADiff: 5 Page Ref: 30
44) Which of the following is NOT found in plasma membranes?
BDiff: 5 Page Ref: 30
45) Which of the following components of the plasma membrane forms ion channels?
DDiff: 5 Page Ref: 31
46) Which of the following is NOT an integral membrane protein?
EDiff: 8 Page Ref: 31
47) Which of the following is an amphipathic molecule?
A) peripheral membrane proteinB) integral membrane proteinC) glycogenD) glucoseE) triglycerideAnswer:
B
Diff: 5
Page Ref: 31
11
48) Which of the following is NOT an amphipathic molecule?
DDiff: 6 Page Ref: 31
49) The layer of carbohydrates on the external surface of a cell is called what?
BDiff: 2 Page Ref: 32
50) The ________ is the site of ribosomal RNA production.
BDiff: 4 Page Ref: 32
51) Where is the genetic code stored?
A) brainB) heartC) nucleusD) Golgi apparatusE) cytoplasmAnswer: CDiff: 2 Page Ref: 32
52) Where inside a cell is glycogen stored?
C
Diff: 3
Page Ref: 32
12
53) Lipophobic molecules that are to be released by cells are stored in membrane-bound structures called ________.
ADiff: 4 Page Ref: 32
54) Continuous with the outer portion of the nuclear pore, this membrane-bound structure functions in the synthesis of secretory proteins, integral membrane proteins, or proteins bound for other organelles.
ADiff: 3
Page Ref: 33
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