BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 19, Problem 4SA
Summary Introduction
Introduction:
A virus is a non-cellular infectious particle that replicates only inside a living cell. Their genome consists of
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what event occurs in bacteriophage multiplication that does not occur in animal virus replication?A,B,C,D, or E?
a. adsorption to the host cells.
b. injection of the viral nucleic acid into the host cell.
c. host cell synthesis of viral enzymes and capsid proteins.
d. assembly of nucleocapsids.
e. replication of viral nucleic acid.
Which of the following does NOT inititiate DNA synthesis?
a. a single-stranded DNA virus.
b. a (-) single stranded RNA virus
c. a (+) single stranded RNA virus
d. a double-stranded DNA virus (Poxviridae)
e. Both (-) and (+) single-stranded RNA viruses
Which statement is true of viral replication?
A) virus attaches to a specific receptor site on the host-cell membrane. B) Once inside the cell, the viral capsid is degraded, and the viral nucleic acid is released. C) Virus uses the host cell’s machinery to replicate and new virus particles are released. D) All of the above
Chapter 19 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 19 - ________ can have a genome of either RNA or DNA....Ch. 19 - Peptidoglycan is seen only in cell walls of...Ch. 19 - In _______, viral DNA becomes integrated into a...Ch. 19 - Prob. 4SACh. 19 - Prob. 5SACh. 19 - Prob. 6SACh. 19 - Prob. 7SACh. 19 - _______ are oxygen-releasing photoautotrophs. a....Ch. 19 - Prob. 9SACh. 19 - Vitamin-producing E. coli cells in your gut are...
Ch. 19 - Prob. 11SACh. 19 - Prob. 12SACh. 19 - Eukaryotes are most closely related to _______. a....Ch. 19 - Match each disease with the type of pathogen that...Ch. 19 - Prob. 15SACh. 19 - Prob. 1CTCh. 19 - Methanogens have been found in the human gut and...Ch. 19 - Review the description of Fred Griffiths...Ch. 19 - The antibiotic penicillin interferes with...Ch. 19 - Many compounds secreted by soil bacteria have been...
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- An 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_forwardWhich statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.arrow_forwardWhy don’t scientists usually consider viruses living? A.They do not have DNA B.They do not have cells C.They cannot reproducearrow_forward
- Influenza Virus has a genome and can jump hosts easily because of its genome A. DNA; reassortment B. RNA; reassortment C. DNA; recombination D. RNA; recombinationarrow_forwardWhich of the following viral components must get into a cell's cytoplasm in order for the virus to be replicated? A) Protein spikes B) The virus envelope C) The virus genome D) The virus capsidarrow_forwardYou are a scientist developing a vaccine against a newly discovered animal virus. What part of the virus would you target your vaccine against and why?arrow_forward
- Many viruses enter host cells through receptor-mediated endocytosis, What is an advantage of this entry strategy? A. The virus directly enters the cytoplasm of the cell B The virus only enters its target host cell type. C. The virus is protected from recognition by white blood cells. D. The virus can directly inject its genome into the cell's nucleus.arrow_forward-If a ssDNA animal virus needs access to a cellular DNA polymerase to replicate its viral genome, in which part of the cell would the viral genome replication most likely occur? a. nucleus b. cytoplasm c. Rough ER d. vesiclearrow_forwardWhich of the following does NOT inititiate DNA synthesis ? (correct answer e) a. a single-stranded DNA virus. b. a (-) single stranded RNA virus c. a (+) single stranded RNA virus d. a double-stranded DNA virus (Poxviridae) e. Both (-) and (+) single-stranded RNA virusesarrow_forward
- In retroviruses, transcription of the provirus: A) converts viral RNA into viral DNA B) does not result in production of viral protein components C) is done by reverse transcriptase D) represents replication of viral genome/nucleic acidarrow_forwardA viral protein that is needed to make HIV DNA isa. integrase.b. reverse transcriptase.c. Vpr.d. Gag polyprotein.arrow_forwardPrions “replicate” by _____. A) replicating their RNA genome within the cytoplasm B) converting normally-folded versions of the protein into misfolded version C) inserting their genome into the host cells chromosome where it will continue to divide indefinitely D) using reverse transcriptase to copy their RNA genome into a complementary copy of DNAarrow_forward
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