Explore topic-wise MCQs in Biology.

This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

Bioreactors can contain volume up to ______ litres.

A. 20
B. 100-1000
C. 1000000
D. 50
Answer» C. 1000000
Discussion
2.

The transformants containing ______ gene will grow on plates containing antibiotics.

A. antibiotic-resistance
B. amino acid
C. selectable marker
D. vitamin-resistance
Answer» B. amino acid
Discussion
3.

Taq polymerase is obtained from _______a) S.typhi

A. <em>E.coli</em>
B. <em>Thermus aquaticus</em>
C. <em>Thermophilus </em>
Answer» D.
Discussion
4.

The three steps involved in PCR are ________

A. annealing, extension, and denaturation
B. extension, denaturation, and annealing
C. denaturation, annealing, and extension
D. denaturation, extension, and annealing
Answer» D. denaturation, extension, and annealing
Discussion
5.

What does PCR stand for?

A. Polymerase chain radioactivity
B. Polymerase chitin reaction
C. Phenol carbohydrate reaction
D. Polymerase chain reaction
Answer» E.
Discussion
6.

Which enzyme helps in joining of DNA?

A. Lyase
B. Ligase
C. Helicase
D. Lipase
Answer» C. Helicase
Discussion
7.

DNA moves towards ______ during agarose gel electrophoresis.

A. negative terminal
B. cathode
C. anode
D. does not move
Answer» D. does not move
Discussion
8.

DNA is _____ charged.

A. positively
B. neutral
C. negatively
D. polar
Answer» D. polar
Discussion
9.

Which chemical is used to obtain a precipitate of pure DNA?

A. Methanol
B. Ether
C. HCl
D. Ethanol
Answer» E.
Discussion
10.

Which protein helps in DNA winding?

A. Helicase
B. Histone
C. Lipase
D. Cellulase
Answer» C. Lipase
Discussion
11.

The enzyme which cleaves proteins is ______

A. protease
B. RNase
C. lipase
D. Dnase
Answer» B. RNase
Discussion