Campbell Biology Test Prep Chapters 6 & 7 | Questions & Answers

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1. When biologists wish to study the in- Answer: C
ternal ultrastructure of cells, they can A: a phase-contrast light micro-
achieve the finest resolution by using scope.
B: a scanning electron microscope.
C: a transmission electronic micro-
scope.
D: a confocal fluorescence micro-
scope.
E: a super-resolution fluorescence
microscope.

2. Which of the following statements cor- Answer: C
rectly describes some aspect of pro- A: Prokaryotes are unlikely to be
tein secretion from prokaryotic cells? able to secrete proteins because
they lack an endomembrane sys-
tem.
B: The mechanism of protein secre-
tion in prokaryotes is probably the
same as that in eukaryotes.
C: Proteins that are secreted by
prokaryotes are synthesized on ri-
bosomes that are bound to the cy-
toplasmic surface of the plasma
membrane.
D: In prokaryotes, the ribosomes
that are used for the synthesis of
secreted proteins are located out-
side of the cell.
E: Prokaryotes contain large pores
in their plasma membrane that per-
mit the movement of proteins out of
the cell.

3. The Golgi apparatus has a polarity or Answer: E
sidedness to its structure and func- A: Transport vesicles fuse with one
tion. Which of the following statements side of the Golgi and leave from the
correctly describes this polarity? opposite side.
B: Proteins in the membrane of the
Golgi may be sorted and modified

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Campbell Biology Test Prep Chapters 6 & 7
Study online at https://quizlet.com/_feqoo0
as they move from one side of the
Golgi to the other.
C: Lipids in the membrane of the
Golgi may be sorted and modified
as they move from one side of the
Golgi to the other.
D: Soluble proteins in the cisternae
(interior) of the Golgi may be sorted
and modified as they move from
one side of the Golgi to the other.
E: All of the above correctly de-
scribe polar characteristics of the
Golgi function.

4. ECM proteins are made by ribosomes Answer: E
in which part of a eukaryotic cell? A: mitochondria
B: cytoplasm
C: nuclear envelope
D: Golgi apparatus
E: rough ER

5. Which structure is the site of the syn- Answer: A
thesis of proteins that may be export- A: rough ER
ed from the cell? B: lysosomes
C: plasmodesmata
D: Golgi vesicles
E: free cytoplasmic ribosomes

6. Vinblastine, a drug that inhibits micro- Answer: C
tubule polymerization, is used to treat A: form cleavage furrows during cell
some forms of cancer. Cancer cells division.
given vinblastine would be unable to B: migrate by amoeboid movement.
C: separate chromosomes during
cell division.
D: extend pseudopods.
E: maintain the shape of the nucle-
us.

7. Which of the following is present in a Answer: B
prokaryotic cell? A: mitochondrion

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