Biology Biology Practice Problems Solutions Library

Viruses Solutions Library

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54 solutions

Viruses

Q. The base composition ofa newly discovered virus is 32.1% G, 17.8% A, 0%T, 28% U, and 22.1% C. This viral genome is susceptible to exonucleases and ...

Solved • Aug 10, 2018

Viruses

Q. The base composition of a newly discovered virus is 32.1% G, 16.9% A, 18.0% T, 0% U, and 33.0% C. The viral genome is resistant to exonucleases but...

Solved • Aug 10, 2018

Viruses

Q. Describe the general morphological features of a virus and speculate as to the reasons that they are so alike.

Solved • Aug 6, 2018

Viruses

Q. What is the name of a virus' protein shell?

Solved • Jul 18, 2018

Viruses

Q. Which virus mutates more often: one using DNA for its genes or one using RNA for its genes?

Solved • Jul 18, 2018

Viruses

Q. How is a helical virus different from an icosahedral virus?

Solved • Jul 17, 2018

Viruses

Q. Describe the lytic and lysogenic cycles of viral replication.

Solved • Jul 17, 2018

Viruses

Q. Why are ribosomes important in the replication of DNA viruses?

Solved • Jul 17, 2018

Viruses

Q. In general, animal viruses differ from bacterial viruses in that _______.A. the entire virion of an animal virus enters the host cell.B. only the v...

Solved • Jul 12, 2018

Viruses

Q. Describe the structure of a viral particle. What are prions?

Solved • Jul 11, 2018

Viruses

Q. Know parts and functions of parts of viruses; What is the size of viruses?

Solved • Jul 11, 2018

Viruses

Q. What do virions of retroviruses contain that other animal virions do not?A. a double stranded DNA genomeB. a single stranded DNA genomeC. a reverse...

Solved • Jul 11, 2018

Viruses

Q. Discuss why viruses are considered infectious "particles" on the borderline between living and non-living.

Solved • Jul 9, 2018

Viruses

Q. How do virus cross plasma membrane?

Solved • Jul 6, 2018

Viruses

Q. Briefly describe, at least 2, fundamental characteristics of living cells that are missing in viruses.

Solved • Jul 5, 2018

Viruses

Q. Describe the three required features present in all viruses. Include the name, function, and macromolecule composition of each structure involved.

Solved • Jul 5, 2018

Viruses

Q. Match each of the following characteristics to the lytic cycle, lysogenic cycle, or both.the bacterial cell wall is broken openthe phage genome is ...

Solved • Jun 7, 2018

Viruses

Q. What is the role of the core proteins that some DNA viruses package along with their genome?

Solved • Jun 7, 2018

Viruses

Q. What two types of shapes/symmetry are recognized in viruses? Describe (or give an example) to illustrate the major differences between the followin...

Solved • May 3, 2018

Viruses

Q. Viruses and bacteria are the only infectious agents found in plants and animals.a. Trueb. False

Solved • Oct 11, 2017

Viruses

Q. HIV is a DNA virus.a. Trueb. False

Solved • Oct 11, 2017

Viruses

Q. Some viruses enter the cell through endocytosis.a. Trueb. False

Solved • Oct 11, 2017

Viruses

Q. The HIV virus uses the host cell's reverse transcriptase to manufacture DNA.a. Trueb. False

Solved • Oct 11, 2017

Viruses

Q. Which of the following are not matched correctly:a. virulent virus-lytic cycleb. temperate virus-non-infecting virusc. lysogenic virus-genome becom...

Solved • Oct 11, 2017

Viruses

Q. The basic structure of a virus contains:a. a nucleic acidb. a cell wallc. a protein coatd. both a and be. both a and c

Solved • Oct 11, 2017

Viruses

Q. Of the viruses listed below, the most lethal isa. influenzab. Ebolac. measlesd. herpes simplex 

Solved • Oct 11, 2017

Viruses

Q. When a virus kills the infected host cell in which it is replicating, the reproductive cycle is called a ________ cycle.a. lysogenicb. phagocyticc....

Solved • Oct 11, 2017

Viruses

Q. The viral enzyme, _________, causes the host cell to synthesize a double strand of DNA complementary to the viral RNA.a. reverse transcriptaseb. ch...

Solved • Oct 11, 2017

Viruses

Q. Typically, viruses form _______________ around their nucleic acid.a. an envelopeb. a cell wallc. a capsidd. a cell membranee. a capsule

Solved • Oct 11, 2017

Viruses

Q. Copying the HIV virus' nucleic acid depends ona. replicaseb. reverse transcriptasec. transcriptased. reverse replicasee. nucleases

Solved • Oct 11, 2017

Viruses

Q. Which of the following is not a viral disease?a. mumpsb. measlesc. chicken poxd. rubellae. diphtheria

Solved • Oct 11, 2017

Viruses

Q. Viruses that cause lysis in host cells are calleda. temperate virusesb. phagocytic virusesc. prionsd. virulent virusese. infectious viruses

Solved • Oct 11, 2017

Viruses

Q. ______ are small naked fragments of RNA that infect plant cells.a. Prionsb. Nucleonsc. Prophagesd. Macrophagese. Viroids

Solved • Oct 11, 2017

Viruses

Q. RNA animal viruses that have a DNA stage are called _____.a. bacteriophagesb. retrovirusesc. viroids

Solved • Oct 11, 2017

Viruses

Q. Viral DNA and capsids are assembled to produce hundreds of viral particles during the _____ stage of the lytic cycle.a. attachmentb. biosynthesisc....

Solved • Oct 11, 2017

Viruses

Q. Which of the following characteristics of living things do viruses have?a. Metabolismb. Cellular organizationc. Evolutiond. Independent reproduction

Solved • Oct 11, 2017

Viruses

Q. Viruses always have at least _____.a. a nucleusb. a cell wallc. an inner core of nucleic acidd. None of these

Solved • Oct 11, 2017

Viruses

Q. The study of viruses has contributed much to our understanding of _____.a. diseaseb. geneticsc. the characteristics of living thingsd. all of the a...

Solved • Oct 11, 2017

Viruses

Q. Gene therapy for familial hypercholesterolemia uses a retrovirus to insert normal genes into _____ cells.a. bone marrow stemb. tumorc. liverd. ovarian

Solved • Oct 10, 2017

Viruses

Q. A retrovirus _____.a. is a DNA virusb. integrates DNA into the host chromosomec. is active immediately after insertion into the host celld. All of ...

Solved • Oct 10, 2017

Viruses

Q. Viruses are not considered to be "alive" due to all of the following reasons excepta they do not contain DNAb. they do not have cellsc. they do not...

Solved • Oct 10, 2017

Viruses

Q. List the order of the major events in the viral multiplication cycle of lytic bacteriophage.a. Endocytosis, replication, assembly, budding, exocyto...

Solved • Oct 10, 2017

Viruses

Q. Why is it necessary to receive a flu shot every year in order to avoid getting the flu?a. Influenza destroys the body's antibody reserves and yearl...

Solved • Oct 10, 2017

Viruses

Q. Why would you never see ribosomes in a virus?a. Viruses hijack the ribosomes of host cells in order to create the necessary proteins when reproduci...

Solved • Oct 10, 2017

Viruses

Q. What happens after the virus has been taken up by the cell?a. it begins making protein b. it dividesc. it inserts into the host DNAd. it switches t...

Solved • Oct 10, 2017

Viruses

Q. Why do some viruses seem to go away and then return later, like a cold sore?a. host has been infected with a different strainb. the immune system f...

Solved • Oct 10, 2017

Viruses

Q. Antiviral drugs that are used after infection often prevent:a. cell divisionb. immune system degradationc. reinfection by other virusesd. uptake of...

Solved • Oct 10, 2017

Viruses

Q.  Vaccines can be used to prevent viral infection by:a. creating an immune response in the hostb. destroying any viruses that enter the hostc. creat...

Solved • Oct 10, 2017

Viruses

Q. Retroviruses are different from viruses in that:a. they have RNA instead of DNAb. they can become dormantc. a and b 

Solved • Oct 10, 2017

Viruses

Q. Which of the following is smallest?a. eukaryote cellb. bacteriac. bacteriophaged. cell membrane protein

Solved • Oct 10, 2017

Viruses

Q. How do viruses reproduce?a. they divide by mitosisb. sexually, by external fertilizationc. replication outside the hostd. inserting DNA into the ho...

Solved • Oct 10, 2017

Viruses

Q. A virus consists of:a. RNA or DNA and a cell membraneb. RNA or DNA and a protein coatc. RNA and DNA and a protein coatd. proteins, cell membrane an...

Solved • Oct 10, 2017

Viruses

Q. Viruses should not be considered living organisms because they do not consist of one or more cells.  a. True b. False

Solved • Aug 2, 2017

Viruses

Q. Most bacteriophages consist of only a _______________ coat and a ____________________ core.  a. Lipid, protein b. Polysaccharide, nucleic acid c...

Solved • Jul 31, 2017