Are you looking for Tools of Recombinant DNA Technology: Restriction Enzymes MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-11 (Microbes in Human Welfare).
Here we composed these Tools of Recombinant DNA Technology: Restriction Enzymes MCQs and Answers after reading the chapter on Biotechnology Principles and Processes from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.
Tools of Recombinant DNA Technology: Restriction Enzymes MCQs and Answers
1. From which organism was the first restriction enzyme isolated?
a) Escherichia coli
b) Salmonella typhimurium
c) Bacillus cereus
d) Staphylococcus aureus
2. In genetic engineering, restriction enzymes cleave the DNA at a specific site known as _____
3. Restriction enzymes are also known as _________
d) restriction endonucleases
4. _____ was the first restriction endonuclease was isolated and characterized.
c) Hind II
d) Sma I
5. Restriction enzymes belong to a larger class of enzymes called ______
6. The _______ in DNA are base pair sequences that are the same when read forward or backward from a central axis of symmetry.
c) termination sequences
d) amino acids
7. Fragments of DNA formed after treatment with endonucleases are separated by the technique of _______
a) polymerase chain reaction
b) gene amplification
d) gel electrophoresis
FAQs on Tools of Recombinant DNA Technology: Restriction Enzymes
Q1. What are restriction enzymes?
Answer: Restriction enzymes are enzymes that cut DNA at specific recognition sites. recognition sites are typically 4-8 base pairs long and are located within a chromosome.
Q2. Why are restriction enzymes important?
Answer: Restriction enzymes are important because they are used in a variety of techniques, including DNA cloning, PCR, and sequencing.
Q3. What are some of the most commonly used restriction enzymes?
Answer: Some of the most commonly used restriction enzymes are EcoRI, BamHI, and HindIII.