Test: MIC100 Week Two Review - Virus (General Knowledge - viruses - biology


MIC100 Week Two Review - VirusVersión en línea viruses por Dr. David Myers 1 A virus consists of: a RNA or DNA and a cell membrane b RNA or DNA and a protein coat c RNA and DNA and a protein coat d Proteins, cell membrane, and RNA 2 How do viruses reproduce? a they divide by mitosis b sexually, by external fertilization c replication outside a host d inserting genetic material into a host cell 3 Which of the following is the smallest? a Fungal cell b bacteria c bacteriophage d skin cell 4 Retroviruses are different from other viruses because they: a have RNA instead of DNA b always become dormant in a host c are symmetrical d all of these choices 5 Vaccines can be used to prevent viral infection by: a creating an immune response in the host b destroying any virus that enters a host c creating a blocking protein in the host d preventing replication of the virus 6 Antiviral drugs that are used after infection often prevent: a cell division b immune system degradation c reinfection by other viruses d uptake of the virus 7 Why do some viruses seem to go away and then return later? a host has been infected with a different strain b the immune system forgot about the virus c the virus entered the lysogenic phase d the virus mutated 8 Why is it to develop vaccines for retroviruses? a their small size evades the immune system b RNA mutates more frequently than DNA c the capsid of retroviruses is resistant d vaccines can only target blood-borne pathogens 9 Viruses are often named by: a where they were first discovered b the scientist who discovered it c the animal that carries it d all of these choices are correct 10 What happens after the virus has been taken up by a cell? a it begins making carbohydrates b it divides by mitosis c it inserts is genetic material into the cell d it switches to infectious mode. 11 Viral infections that are able to hide from the host's immune system: a latent b sensitive c virulent d sneaky 12 Viruses that can cause cancer: a nanoviruses b oncoviruses c bacteriophages d zoonotic viruses 13 A virus that invades a bacteria: a bacterivirus b bacteria invader c adenovirus d bacteriophage 14 Viruses are usually measured in: a nanometers b millimeters c centimeters d micrometers 15 Viral infections are treated with: a antibacterial b antibiotics c antifungals d antivirals 16 viruses can infect: a human cells b bacteria c plant cells d all of the choices are correct 17 The protein coat of a virus is made of proteins called: a lipoproteins b capsomeres c capsid coat d protomeres 18 Viruses that always lead to the destruction of the host cell: a temperate bacteriophages b virulent bacterioviruses c virulent bacteriophages d destructive bacteriophages 19 Short, naked fragments of RNA that can infect plant cells: a prions b virions c viroids d plant viruses 20 Small infectious proteins that can cause disease: a prions b virions c viroids d tremonts 21 Viruses can be classified by: a genetic material type b host type infected c whether it has an envelope of not d all of these choices are correct 22 which is common to both bacteria and viruses? a contain genetic material b killed by antibiotics c have a cell membrane d have a protein coat of capsomeres 23 Which is true about viruses? a they eat and metabolize food b they reproduce by binary fission c they reproduce using a host cell d they are alive 24 A vaccine triggers the body to produce; a antibiotics b antigens c mitochondria d antibodies 25 When a virus attaches to the host, what does it inject into the cell? a protein coat b genetic material c the capsid d the envelope 26 what is the outside of a virus made of? a lipids b carbohydrates c proteins d glycerol 27 Why do scientists say viruses are not living? a they can't reproduce without a host b they can't metabolize food for energy c they're not made of cells d all of the choices are correct. 28 What does the lytic cycle result in? a destruction of the infected cell b many new hosts cells c the infected cell lives longer d the host cell mutates

1

A virus consists of:

a

RNA or DNA and a cell membrane

b

RNA or DNA and a protein coat

c

RNA and DNA and a protein coat

d

Proteins, cell membrane, and RNA

2

How do viruses reproduce?

a

they divide by mitosis

b

sexually, by external fertilization

c

replication outside a host

d

inserting genetic material into a host cell

3

Which of the following is the smallest?

a

Fungal cell

b

bacteria

c

bacteriophage

d

skin cell

4

Retroviruses are different from other viruses because they:

a

have RNA instead of DNA

b

always become dormant in a host

c

are symmetrical

d

all of these choices

5

Vaccines can be used to prevent viral infection by:

a

creating an immune response in the host

b

destroying any virus that enters a host

c

creating a blocking protein in the host

d

preventing replication of the virus

6

Antiviral drugs that are used after infection often prevent:

a

cell division

b

immune system degradation

c

reinfection by other viruses

d

uptake of the virus

7

Why do some viruses seem to go away and then return later?

a

host has been infected with a different strain

b

the immune system forgot about the virus

c

the virus entered the lysogenic phase

d

the virus mutated

8

Why is it to develop vaccines for retroviruses?

a

their small size evades the immune system

b

RNA mutates more frequently than DNA

c

the capsid of retroviruses is resistant

d

vaccines can only target blood-borne pathogens

9

Viruses are often named by:

a

where they were first discovered

b

the scientist who discovered it

c

the animal that carries it

d

all of these choices are correct

10

What happens after the virus has been taken up by a cell?

a

it begins making carbohydrates

b

it divides by mitosis

c

it inserts is genetic material into the cell

d

it switches to infectious mode.

11

Viral infections that are able to hide from the host's immune system:

a

latent

b

sensitive

c

virulent

d

sneaky

12

Viruses that can cause cancer:

a

nanoviruses

b

oncoviruses

c

bacteriophages

d

zoonotic viruses

13

A virus that invades a bacteria:

a

bacterivirus

b

bacteria invader

c

adenovirus

d

bacteriophage

14

Viruses are usually measured in:

a

nanometers

b

millimeters

c

centimeters

d

micrometers

15

Viral infections are treated with:

a

antibacterial

b

antibiotics

c

antifungals

d

antivirals

16

viruses can infect:

a

human cells

b

bacteria

c

plant cells

d

all of the choices are correct

17

The protein coat of a virus is made of proteins called:

a

lipoproteins

b

capsomeres

c

capsid coat

d

protomeres

18

Viruses that always lead to the destruction of the host cell:

a

temperate bacteriophages

b

virulent bacterioviruses

c

virulent bacteriophages

d

destructive bacteriophages

19

Short, naked fragments of RNA that can infect plant cells:

a

prions

b

virions

c

viroids

d

plant viruses

20

Small infectious proteins that can cause disease:

a

prions

b

virions

c

viroids

d

tremonts

21

Viruses can be classified by:

a

genetic material type

b

host type infected

c

whether it has an envelope of not

d

all of these choices are correct

22

which is common to both bacteria and viruses?

a

contain genetic material

b

killed by antibiotics

c

have a cell membrane

d

have a protein coat of capsomeres

23

Which is true about viruses?

a

they eat and metabolize food

b

they reproduce by binary fission

c

they reproduce using a host cell

d

they are alive

24

A vaccine triggers the body to produce;

a

antibiotics

b

antigens

c

mitochondria

d

antibodies

25

When a virus attaches to the host, what does it inject into the cell?

a

protein coat

b

genetic material

c

the capsid

d

the envelope

26

what is the outside of a virus made of?

a

lipids

b

carbohydrates

c

proteins

d

glycerol

27

Why do scientists say viruses are not living?

a

they can't reproduce without a host

b

they can't metabolize food for energy

c

they're not made of cells

d

all of the choices are correct.

28

What does the lytic cycle result in?

a

destruction of the infected cell

b

many new hosts cells

c

the infected cell lives longer

d

the host cell mutates

MIC100 Week Two Review - Virus

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