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1. Campbell's Biology, 9e (Reece et al.) g g g g g g Answer: C g
Chapter 6 A Tour of the Cell g g g g g g Topic: Concept 6.1
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This chapter introduces the topics of microscopy and
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cell fractionation, followed by a review of the cell and t
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he major organelles and structures of eukaryotic cells.
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A challenge with this chapter is to keep this data from
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gsimply being a list of parts. In addition to the structur
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e and function of individual organelles, questions pro
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be student understanding of the cell as a dynamic, int
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erconnected system: the flow of membrane and prote g g g g g g g
ins in the endomembrane sys-
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gtem to the plasma membrane; the flow of informa-
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gtion from the nucleus to the cytoplasm; and the con-
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gnection between the cytoskeleton, the plasma mem-
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gbrane, and the extracellular matrix. An evolutionary p
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erspective goes beyond structural distinctions be- g g g g g
gtween prokaryotes and eukaryotes to examine theo-
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gries concerning the evolutionary origins of eukary-
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gotes and key eukaryotic cell structures.
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Multipl
2. Skill: Knowledge/Comprehension
g Answer: C g
Topic: Concept 6.1
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2) The advantage of light microscopy over electron
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microscopy is that g g
A) light microscopy provides for higher magnification t
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han electron microscopy.
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B) light microscopy provides for higher resolving
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power than electron microscopy. g g g
C) light microscopy allows one to view dynamic
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processes in living cells. g g g
D) light microscopy provides higher contrast than
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electron microscopy. g
E) specimen preparation for light microcopy does not g g g g g g g
produce artifacts. g
3.
1g/g158
, Campbell Biology Ch. 6 - 10 Test Bank g g g g g g g
Studygonlinegatghttps://quizlet.com/_g11tvf
Skill: Knowledge/Comprehension
g Answer: D g
Topic: Concept 6.1
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3) A primary objective of cell fractionation is to
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A) view the structure of cell membranes.
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B) sort cells based on their size and weight.
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C) determine the size of various organelles. g g g g g
D) separate the major organelles so that their partic-
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ular functions can be determined.
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E) separate lipid-soluble from water-soluble mole- g g g g
cules.
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4. Skill: Knowledge/Comprehension
g Answer: B g
Topic: Concept 6.1
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4) In the fractionation of homogenized cells using ce
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ntrifugation, the primary factor that determines whet g g g g g g
her a specific cellular component ends up in the super
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natant or the pellet is g g g g
A) the relative solubility of the component.
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B) the size and weight of the component.
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C) the percentage of carbohydrates in the compo-
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nent.
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D) the presence or absence of nucleic acids in the c
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omponent.
E) the presence or absence of lipids in the compo-
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nent.
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5. Skill: Knowledge/Comprehension
g Answer: E g
5) Which of the following correctly lists the order in w Topic: Concept 6.1
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hich cellular components will be found in the pellet wh
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en homogenized cells are treated with increasing-
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ly rapid spins in a centrifuge?
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A) ribosomes, nucleus, mitochondria g g
B) chloroplasts, ribosomes, vacuoles g g
C) nucleus, ribosomes, chloroplasts g g
D) vacuoles, ribosomes, nucleus g g
E) nucleus, mitochondria, ribosomes g g
6.
2g/g158
, Campbell Biology Ch. 6 - 10 Test Bank g g g g g g g
Studygonlinegatghttps://quizlet.com/_g11tvf
Skill: Application/Analysis
g Answer: A g
Topic: Concept 6.1
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6) Green fluorescent protein (GFP) can be used to flu
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orescently label a specific protein in cells by ge- g g g g g g g g
gnetically engineering cells to synthesize the target pr
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otein fused to GFP. What is the advantage of using GF
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P fusions to visualize specific proteins, instead of stai
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ning cells with fluorescently labeled probes that bind
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to the target protein?
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A) GFP fusions enable one to track changes in the loc
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ation of the protein in living cells; staining usually req
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uires preserved cells.
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B) GFP fusions enable higher resolution than stain-
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ging with fluorescent probes.
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C) GFP permits the position of the protein in the cell
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more precisely than fluorescent probes.
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D) GFP permits visualization of protein-protein inter-
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gactions; fluorescent probes do not. g g g g
E) GFP fusions are not subject to artifacts; fluores-
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gcent probes may introduce background artifacts.
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7. Skill: Application/Analysis
g Answer: C g
Topic: Concept 6.1
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7) What is the reason that a modern electron micro-
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scope (TEM) can resolve biological images to the su
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bnanometer level, as opposed to tens of nanome- g g g g g g g
ters achievable for the best super-resolution light mi-
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croscope?
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A) The focal length of the electron microscope is sig-
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nificantly longer.
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B) Contrast is enhanced by staining with atoms of g g g g g g g g
heavy metal. g
C) Electron beams have much shorter wavelengths t g g g g g g
han visible light.
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D) The electron microscope has a much greater ratio
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of image size to real size.
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E) The electron microscope cannot image whole cells
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at one time.
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3g/g158
, Campbell Biology Ch. 6 - 10 Test Bank g g g g g g g
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8. Skill: Application/Analysis
g Answer: A g
Topic: Concept 6.1
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8) What technique would be most appropriate to use t
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o observe the movements of condensed chromo-
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somes during cell division?
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A) light microscopy g
B) scanning electron microscopy g g
C) transmission electron microscopy g g
D) confocal fluorescence microscopy g g
E) super-resolution fluorescence microscopy g g
9. Skill: Synthesis/Evaluation
g Answer: E g
Topic: Concept 6.2
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9) All of the following are part of a prokaryotic cell e
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xcept
A) DNA.
B) a cell wall.
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C) a plasma membrane.
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D) ribosomes.
E) an endoplasmic reticulum.
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10. Skill: Knowledge/Comprehension
g Answer: C g
Topic: Concept 6.2
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10) The volume enclosed by the plasma membrane of
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plant cells is often much larger than the correspond-
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ging volume in animal cells. The most reasonable ex-
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gplanation for this observation is that g g g g g
A) plant cells are capable of having a much higher s
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urface-to-volume ratio than animal cells. g g g g
B) plant cells have a much more highly convoluted (
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folded) plasma membrane than animal cells.
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C) plant cells contain a large vacuole that reduces the v
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olume of the cytoplasm. g g g
D) animal cells are more spherical, whereas plant
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cells are elongated.
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E) plant cells can have lower surface-to-
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volume ratios than animal cells because plant cells sy
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nthesize their own nutrients. g g g
4g/g158