Question

In: Biology

1.The capsomers are made of? A.DNA B.RNA C.protein D. carbohydrates 2. All of the following are...

1.The capsomers are made of?

A.DNA B.RNA C.protein D. carbohydrates

2. All of the following are correct about treating viral dieases except

A.viruses are killed by the same antibiotics that kill bacteria

B.many antiviral drugs block viral replication

c.many antiviral drugs cause severe side effects

D. interferons show potential for treating and preventing viral infections

3. which of the following viral types enter cells via fusion with the animal cell membrane?

A.enveloped viruses

b.non enveloped viruses

c. naked viruses

d. all of these choices are correct

Solutions

Expert Solution

Answer 1: C. Protein

Explanation: Mainly Virus is made up of genetic material (DNA/RNA) and protein.

- The capsomer is the protein that forms capsid of the virus. Capsomers hence covers the genetic material of the virus.

Incorrect options:

- DNA and RNA are the genetic material of virus and are the ones covered by the capsomers.

- Carbohydrates are mostly present in the protein coat of the virus cell surface.

Answer 2: A. viruses are killed by the same antibiotics that kill bacteria

Explanation: Virus and bacteria as they have different mechanism and machinery to act, react, survive and reproduce.

- Also, antibiotics don't have any target area to kill virus. So that is why we have antibiotics for bacteria and antiviral drugs for virus.

Rest all options are correct,

- Antiviral drugs mainly block the virus replication. This will stop the virus to reproduce. So, this will allow the immunity to act and kill the virus.

- Antiviral drugs have severe side effects because virus uses host cell to replicate. This increases the chance of the drug to harm normal cell as well. As they are not specific target base which makes them more severe.

- Interferons are the cytokines of the immune system. They produce protein that hinders the virus from replicating.

Answer 3: A. enveloped viruses

Explanation: Enveloped viruses have a lipid envelope. This allows them to fuse to host membranes. This is how they enter animal cell.

Incorrect options: Naked virus and non-enveloped virus don't have such lipid envelope.

- That is why they can't fuse through the host membrane. But they have other methods for entry like endocytosis.

gladiator answered 1 year ago

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