Test Bank for Campbell Biology 12th Edition by Urry, All Chapters, Complete Guide A+.pdf

Campbell Biology Ch. 6 - 10 Test Bank g g g g g g g


Studygonlinegatghttps://quizlet.com/_g11tvf

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
g g




This chapter introduces the topics of microscopy and
g g g g g g g g


cell fractionation, followed by a review of the cell and t
g g g g g g g g g g


he major organelles and structures of eukaryotic cells.
g g g g g g g g


A challenge with this chapter is to keep this data from
g g g g g g g g g g


gsimply being a list of parts. In addition to the structur
g g g g g g g g g g


e and function of individual organelles, questions pro
g g g g g g g


be student understanding of the cell as a dynamic, int
g g g g g g g g g


erconnected system: the flow of membrane and prote g g g g g g g


ins in the endomembrane sys-
g g g g


gtem to the plasma membrane; the flow of informa-
g g g g g g g g


gtion from the nucleus to the cytoplasm; and the con-
g g g g g g g g g


gnection between the cytoskeleton, the plasma mem-
g g g g g g


gbrane, and the extracellular matrix. An evolutionary p
g g g g g g g


erspective goes beyond structural distinctions be- g g g g g


gtween prokaryotes and eukaryotes to examine theo-
g g g g g g


gries concerning the evolutionary origins of eukary-
g g g g g g


gotes and key eukaryotic cell structures.
g g g g g




Multipl

2. Skill: Knowledge/Comprehension
g Answer: C g


Topic: Concept 6.1
g g


2) The advantage of light microscopy over electron
g g g g g g g


microscopy is that g g


A) light microscopy provides for higher magnification t
g g g g g g


han electron microscopy.
g g


B) light microscopy provides for higher resolving
g g g g g g


power than electron microscopy. g g g


C) light microscopy allows one to view dynamic
g g g g g g g


processes in living cells. g g g


D) light microscopy provides higher contrast than
g g g g g g


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
g g


3) A primary objective of cell fractionation is to
g g g g g g g


A) view the structure of cell membranes.
g g g g g


B) sort cells based on their size and weight.
g g g g g g g


C) determine the size of various organelles. g g g g g


D) separate the major organelles so that their partic-
g g g g g g g


ular functions can be determined.
g g g g g


E) separate lipid-soluble from water-soluble mole- g g g g


cules.
g




4. Skill: Knowledge/Comprehension
g Answer: B g


Topic: Concept 6.1
g g




4) In the fractionation of homogenized cells using ce
g g g g g g g


ntrifugation, the primary factor that determines whet g g g g g g


her a specific cellular component ends up in the super
g g g g g g g g g


natant or the pellet is g g g g


A) the relative solubility of the component.
g g g g g


B) the size and weight of the component.
g g g g g g


C) the percentage of carbohydrates in the compo-
g g g g g g


nent.
g


D) the presence or absence of nucleic acids in the c
g g g g g g g g g


omponent.
E) the presence or absence of lipids in the compo-
g g g g g g g g


nent.
g




5. Skill: Knowledge/Comprehension
g Answer: E g


5) Which of the following correctly lists the order in w Topic: Concept 6.1
g g g g g g g g g g g


hich cellular components will be found in the pellet wh
g g g g g g g g g


en homogenized cells are treated with increasing-
g g g g g g


ly rapid spins in a centrifuge?
g g g g g g


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
g g


6) Green fluorescent protein (GFP) can be used to flu
g g g g g g g g


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
g g g g g g g


otein fused to GFP. What is the advantage of using GF
g g g g g g g g g g


P fusions to visualize specific proteins, instead of stai
g g g g g g g g


ning cells with fluorescently labeled probes that bind
g g g g g g g g


to the target protein?
g g g


A) GFP fusions enable one to track changes in the loc
g g g g g g g g g


ation of the protein in living cells; staining usually req
g g g g g g g g g


uires preserved cells.
g g


B) GFP fusions enable higher resolution than stain-
g g g g g g


ging with fluorescent probes.
g g g


C) GFP permits the position of the protein in the cell
g g g g g g g g g g


more precisely than fluorescent probes.
g g g g


D) GFP permits visualization of protein-protein inter-
g g g g g


gactions; fluorescent probes do not. g g g g


E) GFP fusions are not subject to artifacts; fluores-
g g g g g g g


gcent probes may introduce background artifacts.
g g g g g




7. Skill: Application/Analysis
g Answer: C g


Topic: Concept 6.1
g g


7) What is the reason that a modern electron micro-
g g g g g g g g


scope (TEM) can resolve biological images to the su
g g g g g g g g g


bnanometer level, as opposed to tens of nanome- g g g g g g g


ters achievable for the best super-resolution light mi-
g g g g g g g g


croscope?
g


A) The focal length of the electron microscope is sig-
g g g g g g g g


nificantly longer.
g g


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.
g g


D) The electron microscope has a much greater ratio
g g g g g g g g


of image size to real size.
g g g g g


E) The electron microscope cannot image whole cells
g g g g g g g


at one time.
g g




3g/g158

, Campbell Biology Ch. 6 - 10 Test Bank g g g g g g g


Studygonlinegatghttps://quizlet.com/_g11tvf
8. Skill: Application/Analysis
g Answer: A g


Topic: Concept 6.1
g g


8) What technique would be most appropriate to use t
g g g g g g g g


o observe the movements of condensed chromo-
g g g g g g


somes during cell division?
g g g g


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
g g


9) All of the following are part of a prokaryotic cell e
g g g g g g g g g g


xcept
A) DNA.
B) a cell wall.
g g


C) a plasma membrane.
g g


D) ribosomes.
E) an endoplasmic reticulum.
g g




10. Skill: Knowledge/Comprehension
g Answer: C g


Topic: Concept 6.2
g g


10) The volume enclosed by the plasma membrane of
g g g g g g g g


plant cells is often much larger than the correspond-
g g g g g g g g


ging volume in animal cells. The most reasonable ex-
g g g g g g g g


gplanation for this observation is that g g g g g


A) plant cells are capable of having a much higher s
g g g g g g g g g


urface-to-volume ratio than animal cells. g g g g


B) plant cells have a much more highly convoluted (
g g g g g g g g


folded) plasma membrane than animal cells.
g g g g g


C) plant cells contain a large vacuole that reduces the v
g g g g g g g g g


olume of the cytoplasm. g g g


D) animal cells are more spherical, whereas plant
g g g g g g g


cells are elongated.
g g


E) plant cells can have lower surface-to-
g g g g g


volume ratios than animal cells because plant cells sy
g g g g g g g g


nthesize their own nutrients. g g g




4g/g158