Question

Choose the true statement(s) about plasmids. To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.

Plasmid tend to be circular.

Plasmids often contain genes that confer a survival advantage to a cell.

Plasmids usually consist of single stranded DNA.

Plasmids tend to exist outside of a cell's chromosome.

Answer 1

True statements about plasmids are:

1. Plasmid tends to be circular.
2. Plasmids often contain genes that confer a survival advantage to a cell.

Genes like antibiotics resistance etc are present in the plasmid which helps them to survive in the presence of antibiotics.

3. Plasmids tend to exist outside of a cell's chromosome.

The usually found separately in the cell outside the chromosome as the double-stranded circular DNA which replicate independently.