This set of Agricultural Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Gene Cloning Vectors – Plasmids”.
1. A plasmid is _______ in shape.
a) Irregular
b) Circular
c) Rectangle
d) Square
View Answer
Explanation: A plasmid is in a small circular shape. Plasmids naturally exist in bacterial cells and they also occur in some eukaryotes.
2. A plasmid is a double-stranded DNA molecule.
a) True
b) False
View Answer
Explanation: Plasmids are circular and double-stranded. They contain thousands of DNA base pairs. Plasmids exist in all the bacterial cells and also occur in few eukaryotes.
3. Genes carried in plasmids do not have any genetic advantages.
a) True
b) False
View Answer
Explanation: Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance. Plasmids naturally exist in bacterial cells and they also occur in some eukaryotes.
4. What is the minimum number of base pairs present in a plasmid?
a) 10
b) 100
c) 1000
d) 10000
View Answer
Explanation: Plasmids are made of DNA base pairs. Plasmids are usually made of hundreds of DNA base pairs. It usually ranges to hundreds of thousands of base pairs.
5. What is the process of plasmid transfer called?
a) Separation
b) Migration
c) Conjugation
d) Mixing
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Explanation: When a bacterium divides, all of the all daughter cells get a copy of plasmids. Bacteria can also transfer plasmids to one another through a process called conjugation.
6. Which of the following is not an application of plasmid?
a) Cloning
b) Transfer of genes
c) Manipulation of genes
d) Destroying organisms
View Answer
Explanation: Scientists have taken advantage of plasmids to use them as tools to clone, transfer and manipulate genes. Plasmids that are used experimentally for these purposes are called vectors.
7. What are the plasmids used for experiments called?
a) Vector
b) Manipulators
c) Cloner
d) Scissors
View Answer
Explanation: Plasmids that are used experimentally for these purposes are called vectors. A recombinant plasmid is created by inserting DNA fragments or genes into a plasmid vector.
Sanfoundry Global Education & Learning Series – Agricultural Biotechnology
To practice all areas of Agricultural Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
