Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 19, Problem 7TYK
Summary Introduction
Introduction: The virus that infects plants is called plant virus. The genome of most plant viruses has RNA that is single-stranded or double-stranded. Very few plant viruses have DNA as their genetic material.
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For a virus to be able to infect a cell, it must
A. Be able to specifically bind to receptors on the cell surface
B. Collide with the cell with sufficient force to break through
C. Be unrecognizable by local leukocytes
D. First inject an enzyme probe in to the cell
Clear patches in cell cultures that indicate sites of virus infection are called a. plaques. b. pocks.c. colonies d. prions.
Virus spikes are commonly associated with which of the following?
a. Non enveloped viruses
b. Glycoproteins
c. Lipids from the host cell membrane
d. Inability to cause hemaglutination
Chapter 19 Solutions
Study Guide for Campbell Biology
Ch. 19 - In the following diagram of lytic and lysogenic...Ch. 19 - Summarize the flow of genetic information during...Ch. 19 - How does a virus spread throughout a plant? Are...Ch. 19 - Create a concept map that describes the lytic and...Ch. 19 - Prob. 2SYKCh. 19 - Prob. 1TYKCh. 19 - Prob. 2TYKCh. 19 - Prob. 3TYKCh. 19 - Prob. 4TYKCh. 19 - T2 and T4 are two types of bacteriophage that...
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- During viral infection, attachment is usually specific to a particular celltype becausea. the virus is attracted to the appropriate host cells by proteinssecreted into the extracellular fluid.b. the virus recognizes and binds to specific molecules in thecytoplasm of the host cell.c. the virus recognizes and binds to specific molecules on the surfaceof the host cell.d. the host cell produces channel proteins that provide passageways forviruses to enter the cytoplasm.e. the virus releases specific proteins that make holes in the membranelarge enough for the virus to enter.arrow_forwardRegarding enveloped viruses, which of the following is true of the viral envelope? A. It has the same structure as a cell wall B. It is resistant to soaps/detergents C. It is composed of capsid proteins D. It is a phospholipid bilayer derived from a membrane of its host cell 42.arrow_forwardA 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_forward
- Find the wrong information about virus attachment and absorption to host cell. A. The surface capsid proteins of naked viruses bind to a specific cell receptor on host cell. B. For enveloped viruses, the spikes are responsible for binding to a specific cell receptor. C. A cell lacking a receptor for a specific virus is not infected by that virus. D. Animal viruses, such as HIV are highly specific and they can only infect particular cell types. E. All of these are true.arrow_forwardThe following statements are correct, except? a. Non-enveloped viruses bind to their host cells via their capsid surface. b. The cell receptor may determine the host range and tissue tropism of viruses. c. Virus particles bind to receptors on their host cells to initiate entry. d. Naked virus particles bind via their transmembrane glycoproteins.arrow_forwardEnveloped viruses enter host cells through ____________ and leave cells through _____________. Check ALL that apply. Select one or more: a.None of the Above b.Fusion / Lysing c.Endocytosis / Lysing d.Endocytosis / Budding e.Fusion / Buddingarrow_forward
- Symptoms of viral infections are caused by: (choose all that apply) A. Actions of the virus that result in cell damage or death B. Actions of the immune system that result in cell damage or death C. Changes in a cell's genetics that result in cancerarrow_forwardThe envelope of an enveloped virus is derived from a. The lysosome of the cell b. The cell membrane of the cell C. The endoplasmic reticulum of the cell d. The mitochondrion of the cell e The Golgi apparatus of the cellarrow_forwardHIV can only infect T-helper cells because their protein spikes only recognize those cells. This is an example of the virus exhibiting _________. a.None of the above b.host specificity c.tissue tropism d.membrane fusion e.virulencearrow_forward
- Which of the following is NOT a feature associated with viruses? a. Cytoplasm c. Protein coat b. Genetic information d. Envelopearrow_forwardViral “spikes” are usually involved in A. Uncoating the virus particle B. Killing the host cell C. Attaching to the host cell to aid in entry or exit D. Replicating DNAarrow_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
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How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License