Plasmids

Q.

Which vector can clone only a small fragment of DNA?

1. Plasmid

2. Cosmid

3. Bacterial Artificial chromosomes (BAC)

Q.

Can a bacterial cell survive without a plasmid DNA?

Q.

Which vector can clone only a small fragment of DNA?

Q.

Plasmids present in bacterial cells are:

1. Circular double helix DNA molecule

2. Circular double helix RNA molecule

3. Linear double helix DNA molecule

4. Linear double helix RNA molecule

Q. Plasmids are extra chromosomal circular DNA molecules

1. which have their own point of replication and can replicate independently
2. which have their own point of replicant but cannot replicate independently
3. which do not have their own point of replication and cannot replicate independent of bacterial chromosomal DNA
4. none of the above

Q. In bacteria, plasmid is:

1. Extra chromosomal material
2. Main DNA
3. Non functional DNA
4. Repetitive gene

Q. Which of the following is not a feature of the plasmids?

1. Transferable
2. Single-stranded
3. Independent replication
4. Circular structure

Q. In bacteria, plasmid is:

1. Extra chromosomal material
2. Main DNA
3. Non functional DNA
4. Repetitive gene

Q. Plasmids are:

1. Extra chromosomal DNA which can self replicate
2. DNA carrying genetic sequence, without expressing it
3. integrated within host DNA without replication ability
4. none of these

Q. Plasmids are the most commonly used vectors, as they are easy to isolate and manipulate.

1. False
2. True

Q. Which of the following organelles is related to genetic engineering?

1. Plastids
2. Plasmids
3. Ribosomes
4. Lysosomes

Q. Plasmids are:

1. Extra chromosomal DNA which can self replicate
2. DNA carrying genetic sequence, without expressing it
3. integrated within host DNA without replication ability
4. none of these

Q. One of the key factors that makes the plasmid a vector in genetic engineering is that

1. it is resistant to antibiotics
2. it is resistant to restriction enzymes
3. it is able to carry a foreign gene
4. its ability to cause infection in the host.

Q. Which vector can clone only a small fragment of DNA?

1. Bacterial artificial chromosome
2. Yeast artificial chromosome
3. Plasmid
4. Cosmid