Concept explainers
1.
To match:
Each of the following descriptions with the virus.
Concept introduction:
The study of virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains an outer protein shell called as capsid, and the inner core contains
2.
Concept introduction:
The study of virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains an outer protein shell called as capsid, and the inner core contains nucleic acids.
3.
Concept introduction:
The study of virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains outer protein shell called capsid, and the inner core contains nucleic acids.
4.
Concept introduction:
The study of virus is called as virology. The virus is an infectious agent that replicates inside a living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains outer protein shell called as capsid, and the inner core contains nucleic acids.
5.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains outer protein shell called as capsid, and the inner core contains nucleic acids.
6.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside a living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains outer protein shell called as capsid, and the inner core contains nucleic acids.
7.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains an outer protein shell called as capsid, and the inner core contains nucleic acids.
8.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains an outer protein shell called as capsid, and inner core contains nucleic acids.
9.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains outer protein shell called as capsid, and the inner core contains nucleic acids.
10.
Concept introduction:
The study of the virus is called as virology. The virus is an infectious agent that replicates inside the living organism. It infects all living beings including bacteria, archaea, animals, and plants. The virion is an entire virus particle that contains an outer protein shell called as capsid, and the inner core contains nucleic acids.
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MICROBIOLOGY W/DISEASES (SPIRAL) >CI<
- The viral ________ plays a role in attaching a virion to the host cell. a. core b. capsid C. envelope d. both b and carrow_forwardArrange the following list into the correct sequence for viral reproduction: 1. penetration 2. assembly 3. replication 4. attachment 5. release (a) 1, 2, 3, 4, 5 (b) 5, 2, 3, 4, 1 (c) 4, 1, 3, 2, 5 (d) 4, 1, 2, 3, 5 (e) 3, 1, 2, 4, 5arrow_forwardWhen a virus enters the lysogenic stage: a. the viral DNA is replicated outside the host cell. b. it enters the host cell and kills it immediately. c. it enters the host cell, picks up host DNA, and leaves the cellunharmed. d. it sits on the host cell plasma membrane with which it coversitself and then leaves the cell. e. the viral DNA integrates into the host genome.arrow_forward
- 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_forwardArrange the following list into the correct sequence for part of the cycle of a retrovirus: 1. dsDNA integrated into host DNA 2.viral proteins synthesized on host ribosomes 3. viral DNA uses host enzymes to transcribe viral RNA 4. reverse transcriptase catalyzes synthesis of ssDNA 5. synthesis of second DNA strand (a) 5, 2, 1, 3, 4 (b) 5, 2, 3, 4, 1 (c) 4, 5, 1, 3, 2 (d) 4, 1, 2, 3, 5 (e) 2, 1, 3, 4, 5arrow_forwardA scientist discovers a new virus with a linear, RNA genome surrounded by a helical capsid. The virus is most likely a member of which family based on structure classification? Rabies virus Herpesviruses Retroviruses Influenza virusesarrow_forward
- Which of the following statements regarding retroviruses is FALSE? A) a cellular enzyme converts the RNA genome into DNA B) double-stranded DNA is transcribed into mRNA by cellular enzymes C) retroviral genomes consist of positive-sense RNA D) the virus commonly integrates into the host chromosome as a provirus E) viral RNA enters the nucleus F) ALL of these statements are TRUEarrow_forwardDefine the following terms: a. virus b. virion c. capsid d. retrovirus e. enveloped virusarrow_forwardWhich of the following statements seemingly refute the fact that viruses are nonliving? A.They reproduce themselves only inside a host cell. B. They contain no enzymes. C. They can change over time, with the emergence of new strains. D. They cause diseases similar to those caused by bacteria. E. They are composed of protein and nucleic acid.arrow_forward
- Polyomavirus and Papillomavirus, which is NOT correct? are circular dsDNA are icosahedral capsid are non-enveloped contain DNA and RNA polymerase their fusion with the host cell doesn’t involve in uncoating genome replicate in cytoplasm None of the above Both D and F D, E, and Farrow_forwardThe Size of Viruses varies from: a. 1-100 nm b. 25-300 nm c. 100-1000 nm d. None of the abovearrow_forwardMatch the terms 1Genome surrounded by a protein coat 2Functional viral particle capable to infect a new host cell 3Infectious protein 4Infectious agent that needs helper virus for infection 5T4 enzyme that creates holes in the E. coli plasma membrane 6When a temperate phage stimulates their bacterial host tostart producing a toxin (e.g. cholera, shiga) 7Virus that infects bacteria 8Hand N spikes 9Virus without an envelope 10Most common and best studies virulent phage of E. coli 11Protein coat that surrounds viral genome 12:true or false : some viruses can cause cancer [ Choose ] lambda True pathogenic stimulation False Nucleocapsid lysosome Naked virus induction lysozyme Flu viruses tobacco mosaic virus lysogeny capsid Lysogenic conversion Holin Prion satellite bacteriophage (or just phage) T4 Virion Streptococcusarrow_forward
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