WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 15, Problem 8MC
Summary Introduction
Introduction:
The viruses are non cellular organisms that are characterized by having an inert crystalline structure outside the living cell .They are obligate intracellular
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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.
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
Properties of viruses include:
a. ability to replicate in any environment
b. visibility under light microscope
c. exsistence as cellular life forms
d. ability to be crystallized
Chapter 15 Solutions
WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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_forwardWhat is the basic classification of viruses. In other words, if you find a new virus, what is the first thing to determine? A. Is this a DNA or an RNA virus? B. Does it cause blue snotty nosed fever? C. does it have a vector? D. does it infect humans?arrow_forwardViruses 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_forward
- Which of the following is characteristic of all viruses? A. A protein capsid. B. a viral envelope C. a nucleic acid genome. D. A and C. E. A, B and C. IT IS NOT Darrow_forwardThink about the cells that viruses infect. Pick out the correct statements below. A. The host cell has some particular thing - be it machinery, chemistry or whatever - that the virus MUST have in order to successfully reproduce. B. Viruse generally don't care what cells they infect. C. Viruses can only replicate in particular hosts and tissues. D. The host range or tissue specficity means the specific type of cells the virus infects. Example - rabies infects neural cells.arrow_forwardWhich 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_forward
- Viruses 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_forwardWhich statements are accurate regarding properties of viruses? Select allthat apply. a. Viruses are cell structures that are compact and economical.b. Viruses represent active molecules outside the host cell.c. The basic structure of a virus is composed simply of a protein shell.d. Viruses do not contain enzymes for most metabolic processes.e. Viruses contain either DNA or RNA.arrow_forwardGive an example of each of the following types of viruses a. Double stranded DNA b. Single stranded DNA c. Positive sense RNA d. Negative sense RNA e. Retrovirusesarrow_forward
- 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.arrow_forwardWhich of the following descriptions correctly identifies a main structural difference between viruses with envelopes and viruses without envelopes? O A. Only viruses with envelopes package their genetic material by engulfing it. O B. Only viruses without envelopes interact with receptor proteins on the surface of the host cell. O. Only viruses without envelopes can release their genetic material into the cytoplasm of the host. O D. Only viruses with envelopes have their contents enclosed by a membranous layer containing lipids.arrow_forwardWhich of the following is common in animal viruses but NOT in bacteriophage? a. DNA b. Capsid c. Envelope d. Icosahedral shapearrow_forward
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What Is A Virus ? ; Author: Peekaboo Kidz;https://www.youtube.com/watch?v=YS7vsBgWszI;License: Standard YouTube License, CC-BY