Chapter 6 Questions - Ch 6 Multiple Choice Identify the...

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

View Full Document Right Arrow Icon
Ch 6 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. What limits the resolving power of a light microscope? a. the type of lens used to magnify the object under study b. the shortest wavelength of light used to illuminate the specimen c. the type of lens that focuses a beam of electrons through the specimen d. the type of heavy metal or dye that is used to stain the specimen e. the ratio of an object's image to its real size ____ 2. 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 C only e. A, B, and C ____ 3. 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. both A and B e. both B and C ____ 4. 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 their particular functions can be determined. e. crack the cell wall so the cytoplasmic contents can be released. ____ 5. 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. ____ 6. 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 ____ 7. 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.
Background image of page 1

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

View Full DocumentRight Arrow Icon
c. The dots permit the size of the proteins to be determined more precisely. d.
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 12/13/2010 for the course ACT 101 taught by Professor Jenkins during the Spring '10 term at Alabama State University.

Page1 / 10

Chapter 6 Questions - Ch 6 Multiple Choice Identify the...

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