Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 21, Problem 5RQ
The viral______play(s) a role in attaching a virion to the host cell.
- core
- capsid
- envelope
- both b and c
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Place the stages of the viral life cycle in their correct order.
____
Attachment
____
Lysis
____
Biosynthesis
____
Maturation
____
Penetration
A viral envelope:
is coded for in a viral genome
is found within the capsid
is not a true plasma membrane
is part of some bacteriophages
To be considered a virus, a virus MUST…
_____be able to insert (recombine) its genes into the main chromosome (s) of the host
_____only replicate inside of a host cytoplasm
_____be a part of the Universal Tree of Life
_____contain enzymes
_____respire or ferment
Chapter 21 Solutions
Biology 2e
Ch. 21 - Figure 21.5 Which of the following statements...Ch. 21 - Figure 21.8 Influenza virus is packaged in a viral...Ch. 21 - Figure 21.10 Which of the following statements is...Ch. 21 - Which statement is true? A virion contains DNA and...Ch. 21 - The viral______play(s) a role in attaching a...Ch. 21 - Viruses. all have a round shape cannot have a long...Ch. 21 - The observation that the bacteria genus Chlamydia...Ch. 21 - A scientist discovers a new virus with a linear,...Ch. 21 - Which statement is not true of viral replication?...Ch. 21 - Which statement is true of viral replication? In...
Ch. 21 - Which statement is true of reverse transcriptase?...Ch. 21 - Oncogenic virus cores can be. RNA DNA neither RNA...Ch. 21 - Which is true of DNA viruses? They use the host...Ch. 21 - A bacteriophage can infect the lungs viruses...Ch. 21 - People with the CCR5?32 mutation of a T-cell...Ch. 21 - An apple grower notices that several of his apple...Ch. 21 - Which of the following is NOT used to treat active...Ch. 21 - Vaccines. are similar to viroids are only needed...Ch. 21 - A patient presents at the clinic with an acute...Ch. 21 - Which of the following is not associated with...Ch. 21 - Which statement is true of viroids? They are...Ch. 21 - The first electron micrograph of a virus (tobacco...Ch. 21 - Varicella-zoster virus is a double-stranded DNA...Ch. 21 - Classify the Rabies virus (a rhabdovirus family...Ch. 21 - Why can’t dogs catch the measles?Ch. 21 - One of the first and most important targets for...Ch. 21 - In this section, you were introduced to different...Ch. 21 - Although plant viruses cannot infect humans, what...Ch. 21 - A bacteriophage with a lytic life cycle develops a...Ch. 21 - Why is immunization after being bitten by a rabid...Ch. 21 - The vaccine Gardasil that targets human papilloma...Ch. 21 - Prions are responsible for variant Creutzfeldt...Ch. 21 - How are viroids like viruses?Ch. 21 - A botanist notices that a tomato plant looks...
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- Figure 17.5 Which of the following statements about virus structure is true? a. All viruses are encased in a viral membrane. b. The capsomere is made up of small protein subunits called capsids. c. DNA is the genetic material in all viruses. d. Glycoproteins help the virus attach to the host cell.arrow_forward"Influenza virus uses______ which is found in the envelope spikes, to adhere to the host cell"arrow_forwardfalse true Viruses do not reproduce .within host cell Phagocytosis is type of Lactive transport R.B.Cs have no mitochondria Phospholipids have similar structure to fat Prokaryotic cell has no mitochondria Channel protein form a small opening through the cell membrane All nucleic acids have no oxygen In prophase stage chromosomes become shorter Cell is defined as basic functional unit of living .organism Phospholipid bilayer of cell membrane has hydrophilic head only O Oarrow_forward
- A viral envelope performs many of the same physiological roles as the cell membrane of a cell such as enfocytosis or active transport. True or false. Explain Your answer.arrow_forwardVIRUS DNA- Capsid- I. I. HOST CELL Viral DNA MRNA W Capsid proteins Viral DNA IV. Viral reproductive cycle What is happening at the point marked I in the diagram? The virus exits the host cell The virus recognizes the host cell due to specific receptors on the viral envelope The virus enters the host cell Glycoproteins on the viral envelope bind to specific receptors on the host cell 00 000 000 O 00 00arrow_forwardName 1 cellular process that some viruses exploit to enter cells. Give an example of a virus that uses this process and explain in 2-3 sentences how the virus exploits that processarrow_forward
- During infection of a cell by Coronavirus, the N protein is: found on the outer surface of the virus particles synthesized on bound ribosomes on the rough ER synthesized in the cytosol on free ribosomes part of the RNA-dependent RNA polymerase required for binding of the virus particle to cellsarrow_forwardWhich of the following statements is TRUE concerning viral envelopes? Only viruses with envelopes have their contents enclosed by a layer containing lipids Only viruses without envelopes interact with receptor proteins on the surface of the host cell. Only viruses without envelopes can release their genetic material into the cytoplasm of the host. Only viruses with envelopes package their genetic material by engulfing it.arrow_forwardWhen during the reproductive cycle is the virus genome and the viral proteins assembled into virus particles? the lysogenic cycle only the lytic cycle only the lytic cycle in all host organisms but the lysogenic cycle only in bacteria the lytic cycle and the lysogenic cycle in all known host organismsarrow_forward
- The viral genome needs to get to the nucleus for the virus that replicates in the nucleus. In other words, the viral nucleocapsid has to overcome two barriers (i.e., plasma membrane and nuclear membrane). Compare and contrast the mechanisms by which the viruses penetrate the two membranes.arrow_forwardWhich cellular organelle or structure produces viral envelope?* OEndoplasmic reticulum. Free ribosomes O Nuclear envelope. Plasma membrane ) Nucleus.arrow_forwardWhich type of interaction is least harmful to the host?arrow_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