Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 4MC
Viruses
a. 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.
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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.
Viruses 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.
Chapter 1 Solutions
Biology: Life on Earth (11th Edition)
Ch. 1 - Evolution is a. a belief. b. a scientific theory....Ch. 1 - Prob. 2MCCh. 1 - Which of the following does not apply to...Ch. 1 - Viruses a. have DNA confined in a nucleus. b. are...Ch. 1 - Which of the following is true? a. All cells are...Ch. 1 - 1. Organisms respond to _______. Organisms acquire...Ch. 1 - Prob. 2FTBCh. 1 - Prob. 3FTBCh. 1 - An important scientific theory that explains why...Ch. 1 - 5. The molecule that guides the construction and...
Ch. 1 - What properties are shared by all forms of life?Ch. 1 - Why do organisms require energy? Where does the...Ch. 1 - Define evolution, and explain the three natural...Ch. 1 - Prob. 4RQCh. 1 - 5. What are some differences between prokaryotic...Ch. 1 - 6. What basic principles underlie scientific...Ch. 1 - What is the difference between a scientific theory...Ch. 1 - 8. What factors did Rudi control for in his open...Ch. 1 - 9. Explain the differences between inductive and...Ch. 1 - List the steps in the scientific method with a...Ch. 1 - 1. What misunderstanding causes some people to...Ch. 1 - 2. How would this textbook's definition of life...Ch. 1 - 3. Review Alexander Fleming's experiment that led...Ch. 1 - 4. Explain an instance in which your own...Ch. 1 - Prob. 5AC
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- 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-carrow_forwardWhich 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 reproducearrow_forwardWhich of the following is common in animal viruses but NOT in bacteriophage? a. DNA b. Capsid c. Envelope d. Icosahedral shapearrow_forward
- Which of the following statements correctly describes viruses? Select one: A. They can reproduce by dividing. B. They cannot reproduce without a host cell. C. They have a genome similar to prokaryotic and eukaryotic cells. D. They can carry out their own metabolic activities.arrow_forwardViruses 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_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_forward
- ________ can have a genome of either RNA or DNA. a. Bacteria b. Eukaryotes c. Viruses d. Archaeaarrow_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_forwardCan viruses evolve? A. No, because viruses are not living organisms B. No, because viruses don't have DNA C. Yes, anything with a genetic basis and ability to reproduce can evolve D. yes, but only by mutations to their RNA.arrow_forward
- Viruses 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_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_forwardWhich of the following can be used to grow and study viruses? A. embryonated eggs B. living animals. C. cell cultures D. continuous cell lines such as HeLa cells.arrow_forward
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