Chapter 13 – Viruses, Viroids , and Prions

Chapter 13 – Viruses, Viroids, and Prions

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General Viral Characteristics

and Information

Viral Morphology

and Culturing

#1 Viral Multiplication (Life Cycles)

#2 Viral Multiplication (Life Cycles)

Misc.

FINAL ROUND

Topic 1: General Viral Characteristics and Information

$100 Question

Viruses differ from all bacteria in that…a. Viruses have DNA and RNA

simultaneously in the virionb. All bacteria contain capsidsc. Viruses are filterabled. Viruses are not composed of cells

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ANSWER


$100 Answer

Viruses differ from all bacteria in that…a. Viruses have DNA and RNA

simultaneously in the virionb. All bacteria contain capsidsc. Viruses are filterabled. (Correct Answer)Viruses are not composed of cells

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$200 Question

Which of the following statements about spikes is FALSE?

a. They may changeb. Neuraminidase is not a spikec. They may be used for attachmentd. They may cause hemagglutination

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ANSWER


$200 Answer

Which of the following statements about spikes is FALSE?

a. They may changeb. Neuraminidase is not a spike

(correct answer)c. They may be used for attachmentd. They may cause hemagglutination

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$300 Question

Viruses that infect bacteria are called a. Bacteriophages

b. Prionsc. Viroidsd. Polyhedral viruses

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ANSWER


$300 Answer

Viruses that infect bacteria are called a. Bacteriophages (correct answer)

b. Prionsc. Viroidsd. Polyhedral viruses

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$400 Question

What is the difference between ‘host range’ and ‘obligate intracellular parasites’?

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ANSWER

Topic 1: Topic 1: General Viral Characteristics and Information

$400 Answer

What is the difference between host range and obligate intracellular parasites?Correct Answer:Host range: The specific species a virus can infectObligate intracellular parasitism: Viruses can only replicate while inside of a host cell

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$500 Question

Which of the following is NOT used as a criterion to classify viruses?

a. Host rangeb. Type of nucleic acidc. Strategy for replication (life cycle)d. Number of capsomeres

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ANSWER


$500 Answer

Which of the following is NOT used as a criterion to classify viruses?

a. Host rangeb. Type of nucleic acidc. Strategy for replication (life cycle)d. (correct answer) Number of

capsomeres

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Topic 2: Viral Morphology and Culturing

$100 Question

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ANSWER

What is the ‘morphological type’ of this virus?


$100 Answer

What is the ‘morphological type’ of this virus?

Correct answer: Complex

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$200 Question

Viruses CANNOT be cultured a. In laboratory animals

b. In cell culturec. In embryonated eggsd. In culture media

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ANSWER


$200 Answer

Viruses CANNOT be cultured a. In laboratory animals

b. In cell culturec. In embryonated eggsd. In culture media (correct answer)

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$300 Question

An envelope is created by what process?

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ANSWER


$300 Answer

An envelope is created by what process?

Correct answer: Budding

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$400 Question

Explain the picture.

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ANSWER


$400 AnswerCorrect answer: This is a picture of bacteria growing in a petri plate. The bacteria have been infected with a bacteriophage- the ‘clearings’ (blank spaces called plaques) on the plate depict areas where a phage has infected and killed the bacteria.

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$500 Question

Which of the following statements about viruses is FALSE?

a. Viruses use their own catabolic enzymesb. Viruses contain a protein coatc. Viruses contain DNA or RNA but never

both in the viriond. Viruses use the anabolic machinery of

the cell

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ANSWER


$500 Answer

Which of the following statements about viruses is FALSE?

a. Viruses use their own catabolic enzymes (correct answer)

b. Viruses contain a protein coatc. Viruses contain DNA or RNA but never

both in the viriond. Viruses use the anabolic machinery of

the cell

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Topic 3: #1 Viral Multiplication (Life Cycles)$100 Question

A Prophage is…

A) An animal virusB) The capsid portion of a virionC) Viral DNAD) Only found in the Lytic Life Cycle

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ANSWER

Topic 3: #1 Viral Multiplication (Life Cycles)

$100 Answer

A Prophage is…

A) An animal virusB) The capsid portion of a virionC) Viral DNA (correct answer)D) Only found in the Lytic Life Cycle

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$200 Question

Put the following steps of this viral life cycle in the correct order.A) Virus forces the cell to synthesize viral

proteins and viral genetic materialB) Virus attaches to the surface of the cellC) Virus penetrates the host cellD) Phage DNA is packaged in capsidsE) Cell ruptures

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ANSWER

Topic 3: #1 Viral Multiplication (Life Cycles) $200 Answer

The correct order is...A) (3) Virus forces the cell to synthesize

viral proteins and viral genetic materialB) (1) Virus attaches to the surface of the

cellC) (2) Virus penetrates the host cellD) (4) Phage DNA is packaged in capsidsE) (5) Cell ruptures B C A D E BACK TO GAME

Topic 3: #1 Viral Multiplication (Life Cycles) $300 QuestionYou MUST answer the $200 question FIRST!!!

The life cycle in the previous question is…A) An animal DNA virus life cycleB) A lytic life cycleC) A latent virusD) A lysogenic bacteriophage

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ANSWER


The life cycle in the previous question is…A) An animal DNA virus life cycleB) A lytic life cycle (correct answer)C) A latent virusD) A lysogenic bacteriophage

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Topic 3: #1 Viral Multiplication (Life Cycles) $400 Question

‘Transduction’ is part of which life cycle?a. Lysogenic bacteriophageb. Lytic T even bacteriophagec. HIVd. RNA animal viruses

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ANSWER


‘Transduction’ is part of which life cycle?a. (correct answer) Lysogenic

bacteriophageb. Lytic T even bacteriophagec. HIVd. RNA animal viruses

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Topic 3: #1 Viral Multiplication (Life Cycles) $500 Question

What is a protease?

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ANSWER


(correct answer) A protease is an enzyme that degrades proteins

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Topic 4: #2 Viral Multiplication (Life Cycles)$100 Question

Packaging, maturation, and assembling all refer to…A) Entry of the virus into the host cellB) Putting together the viral componentsC) Release from the cellD) Insertion of the prophage into host DNA

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ANSWER


$100 Answer

Packaging, maturation, and assembling all refer to…A) Entry of the virus into the host cellB) Putting together the viral componentsC) Release from the cellD) Insertion of the prophage into host DNA

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$200 Question What virus has this life cycle?

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ANSWER


$200 Answer What virus has this life cycle?Correct answer: Retrovirus

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$300 Question

What is the name of the enzyme that converts retroviral ssRNA into dsDNA?

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ANSWER


$300 Answer

What is the name of the enzyme that converts retroviral ssRNA into dsDNA?(correct answer) Reverse Transcriptase

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Topic 4: #2 Viral Multiplication (Life Cycles) $400 Question You MUST do $300 question before this question!

In what cell is reverse transcriptase performing its function?

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ANSWER

1

2

34

6

5


$400 Answer

In what cell is reverse transcriptase performing its function?

Correct answer: Cell 2

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$500 Question

RNA viruses: What is a + strand?

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ANSWER


$500 Answer

RNA viruses: What is a + strand?

Correct answer: The + strand is the ‘sense strand’ (mRNA strand) that contains codons that are complimentary to anticodons on tRNA molecules that carry specific amino acids.

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Topic 5: Misc.

$100 Question

A viroid isa. A provirusb. A naked, infectious piece of RNAc. A capsid without nucleic acidd. A complete, infectious virus particle

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ANSWER

Topic 5: Misc.

$100 Answer

A viroid isa. A provirusb. A naked, infectious piece of RNA

(correct answer)c. A capsid without nucleic acidd. A complete, infectious virus particle

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Topic 5: Misc.

$200 Question

What type of viral nucleic acid is required for a virus to cause cancer?

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ANSWER

Topic 5: Misc.

$200 Answer

What type of viral nucleic acid is required for a virus to cause cancer?

Correct answer: dsDNA

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Topic 5: Misc.

$300 Question

In general, what type of cell is more easily infected with viruses- animal cells or plant cells?

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ANSWER

Topic 5: Misc.

$300 Answer

In general, what type of cell is more easily infected with viruses- animal cells or plant cells?

Correct answer: Animal cells

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Topic 5: Misc.

$400 Question

What does the cell need to make more viral RNA + strands?

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ANSWER

Topic 5: Misc.

$400 Answer

What does the cell need to make more viral RNA + strands?

Correct answer: - strands

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Topic 5: Misc.

$500 Question

Which of the following is not true about Prions ?

a. Prions may be inheritedb. Prions are infectious protein c. Prions are curabled. Prions are transmissible

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ANSWER

Topic 5: Misc.

$500 Answer

Which of the following is not true about Prions ?

a. Prions may be inheritedb. Prions are infectious protein c. Prions are curable (correct answer)d. Prions are transmissible

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FINAL ROUND Question

Are you glad the semester is almost over?

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ANSWER

FINAL ROUND Answer

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Duh

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Chapter 13 – Viruses, Viroids , and Prions