Microbiology Principles And Explorations 9th Edition by Jacquelyn G. Black -Test Bank
Chapter 8: Gene Transfer and Genetic Engineering
Question Type: Multiple Choice
1) When genes are passed on from parent to offspring, which of the following events has taken place?
a) horizontal gene transfer
b) transduction
c) vertical gene transfer
d) retrograde gene transfer
Answer: c
Difficulty: Easy
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.1 The Types and Significance of Gene Transfer
2) Bacterial conjugation is an example of _____.
a) transduction
b) vertical gene transfer
c) horizontal gene transfer
d) bacterial transformation
Answer: c
Difficulty: Easy
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.1 The Types and Significance of Gene Transfer
3) In horizontal gene transfer:
a) genes are passed between bacteria of different generations
b) genes are passed from mother cells to daughter cells
c) genes are passed between bacteria of the same generation
d) none of the above
Answer: c
Difficulty: Easy
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.1 The Types and Significance of Gene Transfer
4) Which of the following processes increases variation seen in bacteria?
a) Transformation
b) Conjugation
c) Transduction
d) all of the above
Answer: d
Difficulty: Medium
Learning Objective 1: LO 8.2 Describe the mechanism and significance of transduction.
Section Reference 1: Section 8.3 Transduction
5) In Griffith’s transformation experiments, which of the following did not take place?
a) Live, capsulated pneumococci killed mice
b) Live unencapsulated bacteria were able to retrieve the DNA from dead encapsulated bacteria and become virulent
c) DNA was transferred from capsulated to unencapsulated bacteria using a bacteriophage
d) Dead, capsulated pneumococci had no effect on mice
Answer: c
Difficulty: Medium
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.2 Transformation
6) In Griffith’s experiments, the “transforming substance” was _____.
a) RNA
b) Protein
c) Polysaccharides
d) DNA
Answer: d
Difficulty: Easy
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.2 Transformation
7) In an experiment such as Griffith’s pneumococcal experiment which of the following, when injected into a mouse, would result in its death?
a) Heat-killed, smooth pneumoccocci
b) Live, rough pneumococci
c) A mixture of heat killed smooth pneumococci and live rough pneumococci
d) A mixture of heat killed rough pneumococci and live rough pneumococci
Answer: c
Difficulty: Medium
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.2 Transformation
8) A bacterium that is transformed:
a) cannot form a conjugation pilus
b) has acquired naked DNA from the environment
c) will probably die within 48 hours
d) if injected, it always will result in the death of a mouse
Answer: b
Difficulty: Medium
Learning Objective 1: LO 8.1 Describe the mechanism and significance of transformation.
Section Reference 1: Section 8.2 Transformation
Reviews
There are no reviews yet.