Biology, 8e (Campbell)
Chapter 6

A Tour of the Cell

Multiple-Choice Questions

1) When biologists wish to study the internal ultrastructure of cells, they most likely would use
A) a light microscope.
B) a scanning electron microscope.
C) a transmission electronic microscope.
D) A and B
E) B and C

Answer: C
Topic: Concept 6.1
Skill: Knowledge/Comprehension

2) The advantage of light microscopy over electron microscopy is that
A) light microscopy provides for higher magnification than electron microscopy.
B) light microscopy provides for higher resolving power than electron microscopy.
C) light microscopy allows one to view dynamic processes in living cells.
D) A and B
E)

B and C
Answer:

C
Topic:

Concept 6.1
Skill:

Knowledge/Comprehension

3) A primary objective of cell fractionation is to
A) view the structure of cell membranes.
B) identify the enzymes outside the organelles.
C) determine the size of various organelles.
D) separate the major organelles so that their particular functions can be determined.
E) crack the cell wall so the cytoplasmic contents can be released.

Answer: D
Topic: Concept 6.1
Skill: Knowledge/Comprehension

4) In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is
A) the relative solubility of the component.
B) the size and weight of the component.
C) the percentage of carbohydrates in the component.
D) the number of enzymes in the fraction.
E) the presence or absence of lipids in the component.

Answer: B
Topic: Concept 6.1
Skill: Knowledge/Comprehension

5) Which of the following correctly lists the order in which cellular components will be found in the pellet when homogenized cells are treated with increasingly