Biology: Life on Earth with Physiology (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 1, Problem 4MC
Summary Introduction

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Viruses are defined as the small infectious agents that are able to replicate inside the cell of living organisms. They lack the capacity to reproduce outside of host cell. It contains either DNA or RNA as a genetic material.

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Virusesa. have DNA confined in a nucleus.b. are relatively rare compared to living organisms.c. do not evolve.d. may be surrounded by plasma membrane from their host cell.
There is a big debate if viruses are alive or not. Either way, look at the list below and pick out the accurate statements.   A. Can only reproduce/replicate in a living cell.   B. They have a protein coat surrounding and protecting the nucleic acid.   C. Viruses have either DNA OR RNA - not both   D. They sometimes have an envelope.
Which of the following is a reason that scientists do not classify viruses as living things? A. They must infect a host because they cannot reproduce on their own. B. They contain DNA, like all living organisms. C. The experience evolution through natural selection. D. They replicate themselves and reproduce

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Biology: Life on Earth with Physiology (11th Edition)

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