Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 1, Problem 4MC
Summary Introduction
Introduction: Viruses are microorganisms that cause a number of diseases in humans and in other organisms. It comprises of a protein coat and it either has deoxyribonucleic acid (DNA) or ribonucleic acid (RNA) as the genetic material.
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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
Viruses are acellular because
a. they are biological entities that do not have a cellular structure.
b. they are known as virions that obtain their genetic materials from their host
c. they are only fragments of non living material.
d. None from choices a-c
Chapter 1 Solutions
Biology
Ch. 1.1 - Describe the source of the energy stored In the...Ch. 1.1 - Prob. 1CYLCh. 1.1 - How does evolution occur in Viruses and organisms?Ch. 1.2 - The largest dinosaurs were plant-eaters. Based on...Ch. 1.2 - Prob. 1CYLCh. 1.2 - Prob. 2CYLCh. 1.2 - describe how species arise and how they become...Ch. 1.3 - Which level of organization would be most...Ch. 1.3 - Prob. 1CYLCh. 1.3 - Prob. 2CYL
Ch. 1.3 - Prob. 3CYLCh. 1.4 - Prob. 1TCCh. 1.4 - Fruit flies, bacteria from hot springs, sea...Ch. 1.4 - describe the principles underlying science?Ch. 1.4 - outline the scientific method?Ch. 1.4 - explain why controls are crucial in biological...Ch. 1.4 - explain why fundamental scientific principles are...Ch. 1.4 - The Boundaries of Life If viruses aren't a form of...Ch. 1 - Evolution is a. a belief. b. a scientific theory....Ch. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Which one of the following is True? a. The...Ch. 1 - Prob. 1FIBCh. 1 - Prob. 2FIBCh. 1 - Prob. 3FIBCh. 1 - Prob. 4FIBCh. 1 - Prob. 5FIBCh. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Define evolution, and explain the process of...Ch. 1 - Prob. 4RQCh. 1 - What are some differences between prokaryotic and...Ch. 1 - What basic principles underlie scientific inquiry?Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - List the steps in the scientific method with a...Ch. 1 - What misunderstanding causes some people to...Ch. 1 - Prob. 2ACCh. 1 - Review Alexander Flemings experiment that led to...Ch. 1 - Prob. 4ACCh. 1 - Prob. 5AC
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- Viruses are not considered living because they ________. a. are not made of cells b. lack cell nuclei c. do not contain DNA or RNA d. cannot reproducearrow_forwardBacterial viruses and animal viruses are similar in that they both a. have only DNA as genetic material. b. have only RNA as genetic material. c. require host functions for some aspect of their life cycle. d. do not require any host proteins.arrow_forwardViruses consist of either DNA or RNA wrapped inside a protein coat. Are viruses considered alive? A. Yes, because they contain DNA. B. Yes, because they contain DNA and proteins. C. No, because they lack carbohydrates and lipids. D. No, because some viruses use RNA as the main genetic molecule.arrow_forward
- Viruses are not considered to be alive because: (choose all that apply) Virus Basics Viruses are not considered to be alive because: (choose all that apply) A. They do not grow B. They cannot reproduce on their own C. They are not made of cells D. They do not contain genetic material (such as DNA)arrow_forwardViruses are considered nonliving because Select one: A. They do not locomote. B. They can reproduce independently. C. Their nucleic acid does not code for protein. D. They are noncellular.arrow_forwardVirusesa. 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.arrow_forward
- Which of the following is a property of life that viruses lack? A. The manufacture and use of complex carbon containing molecules B. The potential to grow and expand their populations C. Engages in self-sustaining biological processes such as homeostasis and metabolism D. The potential to pass hereditary material to offspringarrow_forwardWhich of the following is common in animal viruses but NOT in bacteriophage? a. DNA b. Capsid c. Envelope d. Icosahedral shapearrow_forwardWhich of the following refer/s to viruses? A. They are disease-causing. B. They contain DNA or RNA. C. They must have protection for their own genetic material. D. They are parasitic. A, B, C only A, B, C, D A, C, D B, C, Darrow_forward
- Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.arrow_forwardWhich of the following statements is not true? Select one: a. Viruses multiply inside living cells using viral - mRNA, tRNA & ribosomes. b. Viruses multiply inside living cells. c. Viruses contain DNA or RNA. d. The nucleic acid of a virus is surrounded by a protein coat. e. Viruses cause the synthesis of specialized infectious elements.arrow_forwardViruses contain either DNA or RNA. Viruses possess their own metabolic system a. FIRST statement is TRUE; SECOND statement is FALSE b. BOTH Statements are TRUE c. FIRST statement is FALSE; SECOND statement is TRUE d. BOTH statements are FALSEarrow_forward
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