Test
Week 2 - Bacteria, Viruses & Eukaryotes
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (46)
1An E. coli bacterium is bigger than a red blood cell.
- AVerdadero
- BFalso
2The main components of the viral structure are... (Check all that apply).
- AEnvelope
- BSpikes
- CNucleic Acid
- DCytoplasm
- EViral Proteins
- FCapsid
3Glycoprotein spikes define whether a virus can infect a host cell.
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4All viruses have a viral capsid.
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5What type of viral structure contains a "head"?
- ACapsomere
- BAdenovirus
- CBacteriophage
- DAny RNA virus
6The nucleic acid in HIV is DNA.
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7The three main viral proteins in HIV are...
- AIntegrase, Transcriptase, Protease
- BRNA, Capsid, Reverse Transcriptase
- CIntegrase, Reverse Transcriptase, Protease
8The order of viral replication is attachment, penetration, assembly, synthesis and release.
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9The synthesis stage of viral replication consists of ...
- AMaking new viral particles.
- BSurrounding the viral particles with a capsid.
- CReplicating proteins.
- DCreating new viral envelopes.
10Transcription is the step in which RNA is turned into proteins.
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11Which type of viral infection is considered to be the most harmful?
- AChronic infection
- BLatent infection
- CPersistent infection
- DLytic infection
12In what type of infection does the host cell survive? (Select all that apply).
- ALytic infection
- BPersistent infection
- CLatent infection
13It is difficult for antiviral drugs to target only viral machinery because...
- ATheir glycoprotein spikes prevent entry of antivirals.
- BBoth viruses and people have nucleic acid.
- CViruses can shed their envelope in order to trick antivirals into thinking they are human cells.
14The arguments against viruses being alive are that... (check all that apply)
- AThey are acellular.
- BThey do not have their own metabolism.
- CThey cannot replicate on their own.
- DThey cannot evolve.
- EThey do not contain genetic material.
15Arguments that suggest viruses are alive: (check all that apply)
- AViruses replicate.
- BViruses evolve.
- CViruses have genetic material.
16In what type of viral infection is there an acute spike in viral titre followed by a latent period follow by an acute spike in viral titre again.
- AAcute infection
- BLatent infection
- CChronic infection
17An example of a chronic infection is....
- AHepatitis A
- BHepatitis B
- CHerpes Simplex
- DVaricella-zoster
18The manifestation of the [blank_start]varicella zoster[blank_end] virus when it is first present is [blank_start]chicken pox[blank_end]. Then, during the latency period, the virus lies dormant in the [blank_start]spinal cord[blank_end]. Once reactivated by some sort of insult, the virus travels through the [blank_start]dorsal root ganglion[blank_end] to a specific [blank_start]dermatome[blank_end] and causes [blank_start]shingles[blank_end].
- Avaricella zoster
- Bchicken pox
- Cspinal cord
- Ddorsal root ganglion
- Edermatome
- Fshingles
19What is true about oncogenic viruses? (Select all that apply).
- AThey inhibit tutor suppression genes.
- BThey inhibit oncogenes.
- CThey can render tumor suppression genes non-functional.
- DAn example of an oncogenic virus is HPV.
20The [blank_start]human papilloma[blank_end] virus has a circular, double-stranded DNA protected by capsid proteins.
- Ahuman papilloma
21More than [blank_start]100[blank_end] HPV-types are known. HP16 and 18 cause [blank_start]70[blank_end]% of all cervical cancers.
- A100
- B70
22When one of the viral proteins of HPV (p53) is present, what happens to cells of the cervix?
- ACervix cells with mutated DNA survive.
- BThe G2 checkpoint is inhibited, and all cells are able to replicate.
- CAll cell growth is halted and the cervical cells undergo lysis.
23[blank_start]Oncolytic[blank_end] viruses can invade tumor cells and cause cell [blank_start]lysis[blank_end] leading to a destruction of tumor microenvironment and a systemic anti-timor immune response.
- AOncolytic
- Blysis
24What is true of bacteria?
- AThey have no nucleus.
- BThey have plasmids.
- CThey are eukaryotes.
- DThey are single cell organisms.
- EThey have both flagella and pili.
- FThey have ribosomes.
25E. coli cells can divide ever [blank_start]20[blank_end] minutes. (Enter numerically).
- A20
26The four steps in the bacterial growth curve are the [blank_start]lag[blank_end] phase, [blank_start]log[blank_end] phase, [blank_start]stationary[blank_end] phase, and [blank_start]decline[blank_end] or [blank_start]death[blank_end].
- Alag
- Blog
- Cstationary
- Ddecline
- Edeath
27Bacteria that can or cannot live inside of a cell are called...
- AObligate intracellular bacteria
- BFacultative intracellular bacteria
- CMigratory intracellular bacteria
- DExtracellular bacteria
28What two diseases are caused by obligate intracellular bacteria?
- ASalmonella and Gonorrhoeae
- BRickets and Cholera
- CE. coli and Salmonella
- DRickets and Chlamydia
29What is Quorom Sensing?
- AIt is a mechanism that limits the amount of antimicrobial that can get into a biofilm.
- BHow bacteria talk to one another.
- CIf a bacteria is alone, it prevents the bacteria from starting a biofilm.
30Spores are metabolically active.
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31Spores are resistant to... (select all that apply)
- ARadiation
- BToxins
- CDisinfectants
- DLack of oxygen
- EDehydration
- FExtreme temperatures
32The disinfectants used to kill off C. difficile spores are [blank_start]chlorine[blank_end] containing things like [blank_start]bleach[blank_end], and [blank_start]sporadical[blank_end].
- Achlorine
- Bbleach
- Csporadical
33The best way to get C. difficile spores off of your hands is by using soap and water.
- AVerdadero
- BFalso
34Cocci is another word for rod-shaped, when referring to the shape of bacteria.
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35The shape of staphylococcus aureus bacteria is...
- ACocci
- BBacilli
- CSpirochete
36The shape of Lyme disease bacteria is...
- ACocci
- BBacilli
- CSpirochete
37The shape of E. coli bacteria is ...
- ACocci
- BBacilli
- CSpirochete
38The shape of pneumonia bacteria are...
- ACocci
- BBacilli
- CSpirochete
39Parasites can come in the form of...
- AProkaryotes
- BEukaryotes
- CMulticellular Organisms
- DProtozoa
40What is not true of parasites?
- AThey are divided into unicellular and multicellular organisms.
- BThey have one life stage.
- CThey require asexual and sexual reproduction.
41An intermediate host is one in which...
- AThe parasite undergoes sexual reproduction.
- BThe host harbours the parasite.
- CThe parasite undergoes a developmental stage.
- DThe parasite does not replicate or infect other hosts.
42The PRIMARY difference between biological vectors and mechanical vectors is that...
- ABiological vectors can be definitive or intermediate hosts whereas mechanical vectors are accidental hosts or reservoirs.
- BSome reproduction occurs within biological vectors.
- CBiological vectors cannot fly whereas mechanical vectors can.
- DBiological vectors act as hosts whereas mechanical vectors are not hosts.
43Humans are definitive hosts in which parasitic life cycles
- APubic Lice
- BSchistomiasis
- CStreptococcus
- DMalaria
- ETape Worm
44What is NOT true about the schistosomiasis life cycle?
- AThere are three hosts.
- BMale and female worms pass through the GI tract and go into the water.
- CThey release criteria.
- DThey can cause swimmer's itch.
45In order to get rid of a disease, we have to get rid of the vector.
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46In order for malaria prophylaxis to be effective, you have to take it even after you leave the country in which you were at risk for developing the disease because...
- AThe prophylaxis only targets the blood stage.
- BMalaria parasites are resistant hosts and take lots of time to fully eradicate from the blood system.
- CBecause it targets specific pathways/proteins that live in the bloodstream for a month before dying.
Información
- Descripción
- Test sobre Week 2 - Bacteria, Viruses & Eukaryotes, creado por clare.sheasgreen el 25/01/2016.
- Autor
- clare.sheasgreen
- Idioma
- English
- Visitas
- 2
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