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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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.
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 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.
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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- A positive-strand RNA virus: a.must first be converted to a mRNA before viralproteins can be translated b.is not recognized by host ribosomes. c.can directly translate viral proteins. d.will be degraded by host enzymes. e.needs RNA dependent RNA polymerase to get converted into mRNAarrow_forwardAn experimental drug therapy to treat patients with antibiotic-resistant bacteria involves introduction of a highly specific bacteriophage to the infected patient's bloodstream. Which of the following bacteriophage types would be the LEAST useful for this therapy? a. a lytic bacteriophage b. An enveloped virus c. An RNA virus d. a lysogenic bacteriophagearrow_forwardThe genome of________ can be either RNA or DNA. a. a bacterium c. a virus b. a eukaryote d. an archaeonarrow_forward
- What is different between viruses and bacteria? a. Viruses are typically smaller than bacteria b. Viruses cannot reproduce on their own, while bacteria can c. Bacteria have cell membranes while viruses do not d. Bacteria can be eliminated by antibiotics, while viruses cannot be e. All of the abovearrow_forwardMost viruses use their own virally encoded: a. DNA/RNA polymerase b. Endoplastmic reticulum c. Ribosomes d. Mitochondriaarrow_forwardWhich of the following is NOT true about viruses? O a. The vast majority cause severe disease of their host O b. Genes comprise 5-8% of the human genome O c. Can cause cancer O d. Can be modified to use as treatments against human conditionsarrow_forward
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