Virus replication

Last updated: 13/11/2019

Time limit: 0

Quiz Summary

0 of 20 questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

0 of 20 questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Categories

Not categorized 0%

Answered
Review

Question 1 of 20
1. Question
Which of the following is true?
- Viruses can only replicate in a host cell
- Viruses can replicate in fresh water
- Viruses replicate by binary fission
- Viruses replicate by mitosis
Correct
Incorrect
Question 2 of 20
2. Question
Replication of a virus inside a host cell results in the formation of how many daughter viruses?
- Thousands
- Two
- Four
- Hundreds
Correct
Incorrect
Question 3 of 20
3. Question
What is the first step in the virus replication cycle?
- Binding to the host cell with attachment proteins on the viral surface
- Injection of the viral nucleic acid into the host cell
- Replication of the viral nucleic acid in the host cell
- Reprogramming of host cell metabolism to produce viral enzymes and structural proteins
Correct
Incorrect
Question 4 of 20
4. Question
Where do viruses obtain their lipid envelope?
- From the host cell in which they replicate
- They synthesise it themselves
- They absorb lipids from the environment
- From adipocytes
Correct
Incorrect
Question 5 of 20
5. Question
What must RNA viruses do before they replicate their nucleic acid?
- Make cDNA using reverse transcriptase
- Make mRNA using reverse transcriptase
- Make tRNA using reverse transcriptase
- Makes bDNA using reverse transcriptase
Correct
Incorrect
Question 6 of 20
6. Question
If a single virus takes 2 hours to complete its replication cycle, and produces 5000 progeny which each infect another cell, how many viruses will there be after another 2 hours?
- 25000000
- 10000
- 250000
- 2500000
Correct
Incorrect
Question 7 of 20
7. Question
Which of the following viral components need a host cell’s enzymes and metabolic pathways to be produced?
- All viral components
- Capsid and nucleic acid
- Nucleic acid only
- Attachment proteins and nucleic acid
Correct
Incorrect
Question 8 of 20
8. Question
Viruses need the following from a host cell
- Enzymes to copy nucleic acid, ribosomes
- Enzymes to copy nucleic acid, coat protein
- Coat protein, ribosomes
- Enzymes to copy nucleic acid, coat protein, ribosomes
Correct
Incorrect
Question 9 of 20
9. Question
What is the name given to the protein coat that encapsulates the viral nucleic acid?
- Capsid
- Capsule
- Nucleus
- Nucleolus
Correct
Incorrect
Question 10 of 20
10. Question
Where do viruses obtain their lipid envelope?
- From the host cell in which they replicate
- They synthesise it themselves
- They absorb lipids from the environment
- From adipocytes
Correct
Incorrect
Question 11 of 20
11. Question
What happens to a virus in the absence of a host cell?
- Nothing, it cannot replicate without a host cell
- It divides by binary fission
- It synthesizes its own protein to stay alive
- It only expresses the genes it needs to survive
Correct
Incorrect
Question 12 of 20
12. Question
What do viruses inject into host cells?
- Nucleic acid
- Capsid
- Attachment proteins
- Toxins
Correct
Incorrect
Question 13 of 20
13. Question
What is the name of the host enzyme complex used to synthesise viral capsid?
- Ribosome
- DNA polymerase
- RNA polymerase
- ATPase
Correct
Incorrect
Question 14 of 20
14. Question
What is the host enzyme used to synthesize viral RNA and mRNA?
- RNA polymerase
- DNA polymerase
- DNA helicase
- RNA hydrolase
Correct
Incorrect
Question 15 of 20
15. Question
What is the name of the host enzyme complex used to synthesise viral attachment proteins?
- Ribosome
- DNA polymerase
- RNA polymerase
- ATPase
Correct
Incorrect
Question 16 of 20
16. Question
Which of the following explains how viruses can spread rapidly through a population?
- A single virus infecting a cell can produce thousands of progeny viruses
- A single virus infecting a cell can produce only four progeny viruses
- A single virus infecting a cell can produce only two progeny viruses
- Because viruses aren't alive, they do not need to waste time
Correct
Incorrect
Question 17 of 20
17. Question
Which of the following viral components does not need to be replicated using host cell ribosomes?
- Nucleic acid
- Reverse transcriptase
- Capsid
- Attachment proteins and nucleic acid
Correct
Incorrect
Question 18 of 20
18. Question
If a single virus takes 2 hours to complete its replication cycle, and produces 1000 progeny which each infect another cell, long will it take to produce one million viruses?
- 2 hours
- 4 hours
- 100 hours
- 1000 hours
Correct
Incorrect
Question 19 of 20
19. Question
During a 10 hour period, which of the following would produce the most progeny through replication
- Virus
- Bacteria
- Fungi
- Human
Correct
Incorrect
Question 20 of 20
20. Question
Put the following in order of replication rate, from fastest to slowest: 1. Fungi 2. Bacteria 3. Virus 4. Human
- 3-2-1-4
- 3-1-2-4
- 4-1-2-3
- 1-3-2-4
Correct
Incorrect