6 - Biology, 8e (Campbell) Chapter 6 A Tour of the Cell...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
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. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
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 rapid spins in a centrifuge? A) ribosomes, nucleus, mitochondria B) chloroplasts, ribosomes, vacuoles C) nucleus, ribosomes, chloroplasts D) vacuoles, ribosomes, nucleus E) nucleus, mitochondria, ribosomes Answer: E Topic: Concept 6.1 Skill: Application/Analysis 6) Quantum dots are small (15—30 nm diameter), bright particles visible using light microscopy. If the dots can be specifically bound to individual proteins on a plasma membrane of a cell, which of the following correctly describes the advantage of using quantum dots in examining proteins? A) The dots permit the position of the proteins to be determined more precisely. B) The dots permit the average distance between the proteins to be determined more precisely. C) The dots permit the size of the proteins to be determined more precisely. D) The dots permit the motion of the proteins to be determined more precisely. E) The dots permit visualization of proteins interacting with lipids. Answer:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/24/2012 for the course BIOLOGY 1000 taught by Professor Joseph during the Fall '11 term at St. John's.

Page1 / 20

6 - Biology, 8e (Campbell) Chapter 6 A Tour of the Cell...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online