Question

Which best describes how the common cold spreads in the human body?

A. Viruses lie dormant for many weeks without replicating.
B. Viruses inject DNA into bacteria, which are killed.
C. Viruses replicate outside of cells and then enter cells.
D. Viruses replicate inside a cell and then burst out of the cell.​

Answer 1

Answer:

D

Explanation:

Answer 2

The common cold is caused by virus which replicates inside a cell and then burst out of the cell.

What is cell?

• "A cell is the structural and functional unit of life."
• Each organisms are made of one or more number of cells.
• A cell has many organelles that performs specific functions.

What is common cold?

• "Common cold is a viral infection of throat and nose."

What is virus?

• "A virus is a microbe which we cannot see directly through our eyes."
• "It is a connecting link between living and non-living things."
• The virus has either DNA or RNA as their genetic material.
• They cannot replicate on their own, they require a host for their growth.
• The virus first injects its genetic material, which gets incorporated into the host genome. The host will now also replicate virus DNA along with its own.
• As the replication is completed the replicated material will burst out from the cell, ready to infect the other cell as well and continuing the cycle.

What do you mean by replicate?

• "It means makings its duplicate copy."

Hence, the correct option is D. Viruses replicate inside a cell and then burst out of the cell.​

To know more about virus here

https://brainly.com/question/1427968

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