Viruses Review And Study Quiz

1.

Virus means...
- A.
  
  Death
- B.
  
  Infection
- C.
  
  Poison
- D.
  
  Bacteria
Correct Answer
C. Poison

Explanation
Virus does not mean death, infection, or bacteria. While viruses can cause infection, the term "virus" itself refers to a microscopic infectious agent that replicates inside the cells of living organisms and can cause a variety of diseases. The term "poison" is the closest definition to describe the nature of a virus as it refers to a substance that can cause harm or illness when introduced into the body.

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2.

Viruses attack living and nonliving things to take over cells and bacteria.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Viruses only attack living things, specifically cells. They cannot infect or take over bacteria, which are considered nonliving. Therefore, the statement is false.

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3.

Viruses are made of ________ ______ and _________

Correct Answer
Viruses are made of Nucleic Acid and Protiens.

Explanation
Viruses are composed of nucleic acids, which can be either DNA or RNA, and proteins. The nucleic acid contains the genetic information of the virus, while the proteins form the protective coat around the nucleic acid. This coat, known as the capsid, helps to protect the genetic material and allows the virus to attach to and infect host cells. The combination of nucleic acids and proteins is essential for the structure and function of viruses.

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4.

The protein part is the _________.

Correct Answer
The protein part is the capsid.

Explanation
The capsid is the protein part of a virus. It is the outer protective layer that encloses the genetic material of the virus. The capsid plays a crucial role in protecting the genetic material from the environment and facilitating the virus's entry into host cells. It also helps in the attachment of the virus to host cells and assists in the release of the genetic material into the host cell once infection occurs. Therefore, the protein part referred to in the question is the capsid.

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5.

Nucleic acid is ________ the capsid

Correct Answer
Nucleic acid is inside the capsid.

Explanation
This statement suggests that nucleic acid is located within the capsid. The capsid is a protective protein shell that surrounds the nucleic acid in viruses. This arrangement is characteristic of many viruses, where the nucleic acid is enclosed within the capsid, providing protection and stability to the genetic material.

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6.

Viruses are classified by....
- A.
  
  Shapes
- B.
  
  Shapes and Color
- C.
  
  Shapes, Color, and Size
- D.
  
  Size and Color
Correct Answer
A. Shapes

Explanation
Viruses are classified based on their shapes. Different viruses have distinct shapes such as spherical, rod-shaped, or helical. This classification is important as it helps scientists identify and categorize different types of viruses. The shape of a virus is determined by its genetic material and the proteins that make up its outer shell. By studying the shapes of viruses, scientists can better understand their structure, function, and how they interact with host cells. Therefore, shapes play a crucial role in the classification of viruses.

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7.

How does a Virus infect a living thing?
- A.
  
  It infects a Host Cell, and takes over its protein making system.
- B.
  
  It infects a Host cell, and takes over its lipid making system.
- C.
  
  It infects the living thing automatically by any contact made with the infected organism.
- D.
  
  It sings a horrible song.
Correct Answer
A. It infects a Host Cell, and takes over its protein making system.

Explanation
A virus infects a living thing by entering a host cell and hijacking its protein-making system. Viruses are unable to replicate on their own, so they rely on host cells to reproduce. Once inside a host cell, the virus releases its genetic material and takes control of the cell's machinery, forcing it to produce new viral components. These components are then assembled into new viruses, which can go on to infect other cells and continue the cycle of infection. This process allows the virus to spread and cause harm to the host organism.

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8.

If a virus is virulent, it undergoes the Lytic Cycle.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
If a virus is virulent, it means that it is highly infectious and capable of causing severe disease. The lytic cycle is a type of viral replication cycle where the virus infects a host cell, takes over its machinery to produce more viruses, and eventually causes the cell to burst, releasing the newly formed viruses. Therefore, it can be inferred that a virulent virus would undergo the lytic cycle to spread and cause harm to the host.

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9.

Step One of the Lytic Cycle is which of the following?
- A.
  
  Entry
- B.
  
  Assembly
- C.
  
  Adsorption
- D.
  
  Replication
Correct Answer
C. Adsorption

Explanation
In the lytic cycle, adsorption is the first step. Adsorption refers to the attachment of the bacteriophage (a virus that infects bacteria) to the surface of the host bacterium. This attachment is essential for the subsequent steps of the lytic cycle to occur, such as entry of the viral genetic material into the host cell, replication of the viral genome, assembly of new viral particles, and ultimately, lysis of the host cell to release the newly formed viruses. Therefore, adsorption is the correct answer for the first step of the lytic cycle.

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10.

You can still get Viral infections from safe sex. TRUE OR FALSE?
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
There is still a chance that you can aquire an infection, even if the chance is very slight.

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11.

Attachment is....
- A.
  
  Virus DNA joining with Host DNA.
- B.
  
  DNA attaching to bacteria.
- C.
  
  Virus RNA joining with Host RNA.
- D.
  
  RNA attaching to bacteria.
Correct Answer
A. Virus DNA joining with Host DNA.

Explanation
The correct answer is "Virus DNA joining with Host DNA." This is because viruses are known to infect host cells by injecting their DNA into the host's DNA. This integration allows the virus to utilize the host's cellular machinery to replicate and produce more viruses. By joining with the host DNA, the virus ensures its survival and propagation within the host organism.

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12.

Replication is when a Host cell undergoes miosis and the virus DNA gets copied. TRUE OR FALSE?
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The Host cell undergoes Mitosis, not Miosis.

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13.

If temperate, the virus goes into the....
- A.
  
  Lytic Cycle
- B.
  
  Lysogenic Cycle
- C.
  
  Replicaionic Cycle
- D.
  
  Tyleric Cycle
Correct Answer
B. Lysogenic Cycle

Explanation
The correct answer is the Lysogenic Cycle. In the Lysogenic Cycle, the virus integrates its genetic material into the host cell's DNA and remains dormant for a period of time. During this time, the viral DNA is replicated along with the host cell's DNA during cell division. The virus does not immediately cause cell lysis or destruction. Instead, it can remain in the host cell for an extended period, and under certain conditions, it can switch to the Lytic Cycle, where it starts replicating and causes the host cell to burst, releasing new viral particles.

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14.

Name the four main ways you could help prevent Viral Infections.

Correct Answer
Vaccinate
Wash hands
Safe Sex
Cover mouth when coughing.

Explanation
The four main ways to help prevent viral infections are to vaccinate, wash hands, practice safe sex, and cover mouth when coughing. Vaccination helps build immunity against specific viruses, reducing the risk of infection. Washing hands with soap and water or using hand sanitizer helps remove viruses from the hands, preventing their spread. Practicing safe sex, such as using condoms, reduces the risk of sexually transmitted viral infections. Covering the mouth when coughing or sneezing helps prevent the spread of respiratory viruses through respiratory droplets. By following these preventive measures, the chances of viral infections can be significantly reduced.

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4

Viruses Review And Study Quiz

Virus means...

Viruses attack living and nonliving things to take over cells and bacteria.

Viruses are made of ________ ______ and _________

The protein part is the _________.

Nucleic acid is ________ the capsid

Viruses are classified by....

How does a Virus infect a living thing?

If a virus is virulent, it undergoes the Lytic Cycle.

Step One of the Lytic Cycle is which of the following?

You can still get Viral infections from safe sex. TRUE OR FALSE?

Attachment is....

Replication is when a Host cell undergoes miosis and the virus DNA gets copied. TRUE OR FALSE?

If temperate, the virus goes into the....

Name the four main ways you could help prevent Viral Infections.

Viruses are made of and ___