Viruses Flashcards

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1
Q

Researchers exposed patients to viruses that infects cows, hoping it would provide immunity against a similar virus that infects humans

A

Jennerian Vaccine

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2
Q

Vaccine developers took a whole virus and modified it to be less deadly but still alive

A

Attenuated vaccine

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3
Q

Developed by scientists to block the re-activation of latent viruses, these therapies are administered after a patient contracts a disease to limit severity or re-occurance

A

Anti-Viral drug

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4
Q

Scientists isolated a toxin produced by a microbe and developed a vaccine to fight the effects of the toxin, instead of the whole organism

A

Toxoid vaccine

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5
Q

Researchers isolated a small part of a virus (like a spike) and use it to stimulate an immune response

A

Subunit Vaccine

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6
Q

Used primarily against bacteria, vaccine developers took polysaccharides from the outer coating of a bacterium, paired it with a protein adjuvant and use that to stimulate an immune response

A

Conjugate vaccine

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7
Q

Scientists heat- kill entire viruses or bacteria and use the while agent to produce an immune response

A

Inactivated vaccine

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8
Q

A virus that inserts its DNA into the host chromosome, leading to abnormalities in the DNA that could eventually cause cancer

A

Oncovirus

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9
Q

A virus that inserts its DNA into the host chromosome so that at a later time, the viral DNA can excise itself and be used to produce more viral particles

A

Provirus

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10
Q

A virus that injects its DNA into a prokaryote, inserting the viral DNA into the host’s chromosome for later use

A

prophage

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11
Q

A RNA virus that uses reverse transcription to make cDNA. It inserts the cDNA into the host’s genome, causing abnormalities

A

Retrovirus

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12
Q

Non-cellular entities composed of a capsid containing a nucleic acid segment. They are obligate pathogens and require a host cell to reproduce

A

Virus

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13
Q

Non-cellular entities composed of just a small strand of RNA. Luckily, they only cause diseases in plants

A

Viroid

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14
Q

Non- cellular entities composed of misfiles proteins. They cause disease by misfolding other proteins, leading to plaques that damage nerve tissue

A

Prion

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15
Q

A dsDNA virus with a complex capsid that infects Prokaryotic cells

A

Bacteriophage

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16
Q

Virus sheds its outer layer, including the capsid and envelope (if present)

A

Uncoating

17
Q

New viral particles are brought together to form new viruses

A

Assembly

18
Q

Virus encounters and attaches to the surface of a susceptible host cell

A

adsorption

19
Q

Viruses either cause lysis of the host cell, or slowly exit through exocytosis

A

Release

20
Q

Virus uses surface spikes to gain entry and pass through the plasma membrane of the host cell

A

Penetration

21
Q

DNA or RNA is used to generate new nucleic acid, cacpsomeres and spikes as needed

A

Synthesis

22
Q

A mild virus frequently experienced by camels mutates and becomes capable of infecting human cells. In humans, the virus becomes much more virulent, often causing respiratory failure and death

A

Zoonosis

23
Q

Human habitats, continue to expand, forcing people to build on property that is closer and closer into what used to be forest habitats. Close proximity to animal reservoirs increases the rick of infection

A

Spillover

24
Q

A never-before-seen virus begins infecting people in South-Eastern Asia. Unlike anything scientists have documented before, they determine it is a mutated form of the flu, which is highly virulent and causes death.

A

Emerging Disease

25
Q

Patients enter a hospital for a variety of reasons. While in the hospital, patients are exposed to many other infections that can only be caught/ contracted in hospitals.

A

Nosocomial infected

26
Q

First proposed the existence of subcellular infectious agents, and termed them “viruses” which comes from latin for “poison”

A

Pasteur

27
Q

Introduced a vaccine against polio in the 1950s

A

Salk

28
Q

Developed the first vaccine against Smallpox using other animal pox strains, such as Cowpox and Horsepox

A

Jenner

29
Q

Identified Tobacco Mosaic virus in the 1890’s

A

Ivanowski & Biejerinck

30
Q

Every cell type we’ve ever discovered has been infected by at least one type of …

A

virus

31
Q

Viruses can carry enzymes such as Polymerase and ….

A

Reverse Transcriptase

32
Q

Viruses have driven the evolution of cell cellular life through an “arms race” of increasing offensive and …

A

defensive capabilities

33
Q

There is currently no accepted ________, although several hypotheses exist

A

evolutionary history of viruses