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An extra-chromosomal, self-replicating p...

An extra-chromosomal, self-replicating part of the cell that has proven to be a boon to biotechnology is:

A

Virus

B

Mitochondria

C

Nucleus

D

Plasmid

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, "An extra-chromosomal, self-replicating part of the cell that has proven to be a boon to biotechnology is:", we will analyze each of the options provided. ### Step-by-Step Solution: 1. **Understanding the Question**: We need to identify an extra-chromosomal and self-replicating component of the cell that is beneficial for biotechnology. 2. **Analyzing the Options**: - **Virus**: Viruses are not considered extra-chromosomal DNA; they are infectious agents that require a host cell to replicate. They do not replicate independently and are not typically used in biotechnology as self-replicating entities. - **Mitochondria**: Mitochondria are organelles within eukaryotic cells that generate energy. They do contain their own DNA and can replicate independently, but they are not classified as extra-chromosomal DNA in the context of biotechnology. - **Nucleus**: The nucleus is the control center of eukaryotic cells containing the cell's genetic material (DNA). It is not extra-chromosomal and does not replicate independently. - **Plasmid**: Plasmids are small, circular, extra-chromosomal DNA molecules found in bacteria and some eukaryotes. They can replicate independently of chromosomal DNA and are widely used in genetic engineering and biotechnology for cloning and gene expression. 3. **Identifying the Correct Answer**: Based on the analysis, the only option that fits the criteria of being an extra-chromosomal, self-replicating part of the cell that is beneficial for biotechnology is **plasmid**. ### Final Answer: The correct answer is **plasmid**. ---
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