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AP Bio Campbell 7E Chapter 18 Test Bank

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Subject: 
Biology
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Tags: 
Biology
Molecular biology
microbiology
Gene expression
Virology
RNA
Virus
Lytic cycle
RNA virus
Trp operon
Lac operon
Transduction
health
behavior
Human development
Interpersonal relationships
Love
Psychoanalysis
Attachment theory
Ethology
Personal life
Technology

Ch 18 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following is (are) true about viruses? a. Viruses are classified below the cellular level of biological organization. b. A single virus particle contains both DNA and RNA. c. Even small virus particles are visible with light microscopes. d. Only A and B are true. e. A, B, and C are true. ____ 2. Which of the following is not a reason scientists suspected that something other than bacteria was the cause of tobacco mosaic disease? a. Passing infectious sap through a fine filter failed to remove the infectious agent. b. Treating infectious sap with alcohol failed to remove the infectious agent. c.

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