Viruses Review

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Viral Structures

PhagesAnimal Viruses

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Viral Structures:

$100 Question

Which of these structures is found in all viruses?

a. DNA

b. RNA

c. A Capsid

d. SpikesBACK TO GAME

ANSWER

Viral Structures:

$100 Answer

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Which of these structures is found in all viruses?

a. DNA

b. RNA

c. A Capsid

d. Spikes

Viral Structures:

$200 Question

Most phages have this shape:

a. Icosahedral

b. Complex

c. Helical

d. Cylindrical

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ANSWER

Viral Structures:

$200 Answer

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Most phages have this shape:

a. Icosahedral

b. Complex

c. Helical

d. Cylindrical

Viral Structures:

$300 Question

Which of these could be a correctly written scientific name for a virus?

a. Enteroviridae poliovirus

b. Enterovirus poliovirus

c. Enterovirus Poliovirus

d. Enteroviridae poliovirus

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ANSWER

Viral Structures :

$300 Answer

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Which of these could be a correctly written scientific name for a virus?

a. Enteroviridae poliovirus

b. Enterovirus poliovirus

c. Enterovirus Poliovirus

d. Enteroviridae poliovirus

What is the name for this structure (one single round protein subunit)?

a. Capsid

b. Spike

c. Matrix protein

d. Capsomere

Viral Structures :

$400 Question

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ANSWER

Viral Structures :

$400 Answer

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What is the name for this structure (one single round protein subunit)?

a. Capsid

b. Spike

c. Matrix protein

d. Capsomere

Viral Structures :

$500 Question

When phage DNA becomes part of a host chromosome, what is the phage DNA called?

a. prophage

b. lysogen

c. Homologous recombinant

d. Transducing particleBACK TO GAME

ANSWER

Viral Structures :

$500 Answer

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When phage DNA becomes part of a host chromosome, what is the phage DNA called?

a. prophage

b. lysogen

c. Homologous recombinant

d. Transducing particle

Phages:

$100 Question

Which of these phage types does not kill its host cell?

a. Temperage

b. Lytic

c. Lysogenic

d. Filamentous

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ANSWER

Phages:

$100 Answer

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Which of these phage types does not kill its host cell?

a. Temperage

b. Lytic

c. Lysogenic

d. Filamentous

Phages:

$200 Question

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What is meant when we say something was a productive infection?

a. The host cell was lysed

b. New phages were made and assembled

c. Phage DNA was incorporated into the host chromosome

d. Bacterial DNA was put into some phage head proteins

Phages:

$200 Answer

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What is meant when we say something was a productive infection?

a. The host cell was lysed

b. New phages were made and assembled

c. Phage DNA was incorporated into the host chromosome

d. Bacterial DNA was put into some phage head proteins

Phages:

$300 Question

In phages, what is the function of lysozyme?

a. Break down and recycle unneeded molecules

b. Degrade peptidoglycan in the host cell wall

c. Prevent the host from reproducing

d. Neutralize ROS and hydrogen peroxide

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ANSWER

Phages:

$300 Answer

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In phages, what is the function of lysozyme?

a. Break down and recycle unneeded molecules

b. Degrade peptidoglycan in the host cell wall

c. Prevent the host from reproducing

d. Neutralize ROS and hydrogen peroxide

Phages:

$400 Question

Which of these statements is FALSE?

a. In generalized transduction, a phage can insert any bacterial gene into a new host

b. In specialized transduction, both bacterial and phage DNA go into the new host

c. In generalized transduction, only phage DNA is inserted into the new host

d. Specialized transduction involves cutting out bacterial DNA and phage DNA from a lysogen’s chromosome

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ANSWER

Phages:

$400 Answer

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Which of these statements is FALSE?

a. In generalized transduction, a phage can insert any bacterial gene into a new host

b. In specialized transduction, both bacterial and phage DNA go into the new host

c. In generalized transduction, only phage DNA is inserted into the new host

d. Specialized transduction involves cutting out bacterial DNA and phage DNA from a lysogen’s chromosome

Phages:

$500 Question

Which of these bacteria would be protected from phage infection?

a. The bacterium has methylated its DNA and not the phage DNA

b. The bacterium contains modification enzymes but no restriction enzymes

c. The bacterium has methylated its own DNA and the phage DNA

d. The bacterium has methylated the phage DNA but not its own DNA

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ANSWER

Phages:

$500 Answer

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Which of these bacteria would be protected from phage infection?

a. The bacterium has methylated its DNA and not the phage DNA

b. The bacterium contains modification enzymes but no restriction enzymes

c. The bacterium has methylated its own DNA and the phage DNA

d. The bacterium has methylated the phage DNA but not its own DNA

Animal Viruses:

$100 Question

How do naked viruses get inside a host cell?

a. Membrane fusion

b. Endocytosis

c. Through protein channels

d. By lysing the cell

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ANSWER

Animal Viruses:

$100 Answer

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How do naked viruses get inside a host cell?

a. Membrane fusion

b. Endocytosis

c. Through protein channels

d. By lysing the cell

Animal Viruses:

$200 Question

Reverse transcribing viruses contain ___ which is then used as a template to make ____

a. RNA, DNA

b. DNA, RNA

c. + DNA, - DNA

d. + RNA, - RNABACK TO GAME

ANSWER

Animal Viruses:

$200 Answer

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Reverse transcribing viruses contain ___ which is then used as a template to make ____

a. RNA, DNA

b. DNA, RNA

c. + DNA, - DNA

d. + RNA, - RNA

Animal Viruses :

$300 Question

Which of these statements is FALSE about ssRNA viruses that have only a + strand?

a. Replicase makes a – strand in the host cell

b. The + strand is transcribed and translated

c. The – strand is replicated to form the genome for new viruses

d. The viral RNA is transcribed in the cytoplasm of the host cell

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ANSWER

Animal Viruses :

$300 Answer

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Which of these statements is FALSE about ssRNA viruses that have only a + strand?

a. Replicase makes a – strand in the host cell

b. The + strand is transcribed and translated

c. The – strand is replicated to form the genome for new viruses

d. The viral RNA is transcribed in the cytoplasm of the host cell

Animal Viruses:

$400 Question

How are naked viruses released from a host cell?

a. By budding

b. Exocytosis

c. By causing apoptosis in the host cell

d. By moving through transport proteins

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ANSWER

Animal Viruses:

$400 Answer

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How are naked viruses released from a host cell?

a. By budding

b. Exocytosis

c. By causing apoptosis in the host cell

d. By moving through transport proteins

Animal Viruses:

$500 Question

Which of these would most likely cause a cell to become cancerous?

a. Under expression of a proto-oncogene

b. Over expression of a tumor suppressor gene

c. Expression of a viral oncogene inside a host cell

d. Multiple silent mutations

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ANSWER

Animal Viruses:

$500 Answer

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Which of these would most likely cause a cell to become cancerous?

a. Under expression of a proto-oncogene

b. Over expression of a tumor suppressor gene

c. Expression of a viral oncogene inside a host cell

d. Multiple silent mutations

Everything:

$100 Question

What is a viral titer?

a. An enzyme that twists the DNA double helix following DNA replication

b. A way of expressing the concentration of viruses

c. An inhibitor that prevents viral attachment to receptors

d. A solution of viruses and host cellsBACK TO GAME

ANSWER

Everything :

$100 Answer

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What is a viral titer?

a. An enzyme that twists the DNA double helix following DNA replication

b. A way of expressing the concentration of viruses

c. An inhibitor that prevents viral attachment to receptors

d. A solution of viruses and host cells

Everything :

$200 Question

This is NOT a way bacteria defend themselves against phages:

a. Covering up receptors

b. Restriction enzymes

c. Digestion by lysosomes

d. Modification enzymesBACK TO GAME

ANSWER

Everything : $200 Answer

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This is NOT a way bacteria defend themselves against phages:

a. Covering up receptors

b. Restriction enzymes

c. Digestion by lysosomes

d. Modification enzymes

Everything :

$300 Question

Hemagluttination is:

a. clumping of white blood cells

b. clumping of red blood cells

c. thickening of the cytoplasmic membrane and cytoplasm

d. A severe allergic reaction

to glutenBACK TO GAME

ANSWER

Everything : $300 Answer

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Hemagluttination is:

a. clumping of white blood cells

b. clumping of red blood cells

c. thickening of the cytoplasmic membrane and cytoplasm

d. A severe allergic reaction

to gluten

Everything :

$400 Question

An insertion sequence is:

a. a gene for transposase surrounded by repeating DNA

b. an operon surrounded by repeating DNA

c. an area of the chromosome where a plasmid was previously incorporated into the DNA

d. a gene containing a mutation that prevents the cell from making tryptophan

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ANSWER

Everything :

$400 Answer

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An insertion sequence is:

a. a gene for transposase surrounded by repeating DNA

b. an operon surrounded by repeating DNA

c. an area of the chromosome where a plasmid was previously incorporated into the DNA

d. a gene containing a mutation that prevents the cell from making tryptophan

Everything :

$500 Question

Which of these bacteria, if mixed together, would result in an F+ cell and an F- cell?

a. Hfr and F-

b. F+ and F-

c. F’ and F-

d. F+ and HfrBACK TO GAME

ANSWER

Everything :

$500 Answer

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Which of these bacteria, if mixed together, would result in an F+ cell and an F- cell?

a. Hfr and F-

b. F+ and F-

c. F’ and F-

d. F+ and Hfr