WBCS Mains Biology Biotechnology Questions 2023

Q. Maximum application of animal cell culture technology today is in the production of
(A) Insulin
(B) Interferons
(C) Edible proteins
(D) Vaccines

Correct Answer: (D) Vaccines

Q. The following organism does not exhibit sexual reproduction
(A) Bacteria
(B) Cyanobacteria
(C) Fungi
(D) Algae

Correct Answer: (B) Cyanobacteria

Q. We keep food in a refrigerator to prevent food from going bad due to
(A) Viral infection
(B) Fungal infection
(C) Bacterial infection
(D) Both (B) and (C)

Correct Answer: (D) Both (B) and (C)

Q. The size of E. coli bacteria is
(A) 2000 nm
(B) 200 nm
(C) 20 nm
(D) 2 nm

Correct Answer: (A) 2000 nm

Q. The first transgenic plant was produced in
(A) Rice
(B) Tobacco
(C) Maize
(D) Cotton

Correct Answer: (B) Tobacco

Q. Probiotics are
(A) Cancer-inducing microbes
(B) Safe antibiotics
(C) New kind of food allergens
(D) Live microbial food supplement

Correct Answer: (D) Live microbial food supplement

WBCS Mains Biology Biotechnology Questions 2022

Q. Citric acid can be produced from crude sugar by aerobic fermentation using the organism
(A) Amylase
(B) Lipase
(C) Thiobacillus
(D) Aspergillus niger

Correct Answer: (D) Aspergillus niger

Q. Bacteria that feed upon decaying organic matter in the soil would best be described as which one of the following?
(A) Heterotrophic
(B) Autotrophic
(C) Fungi
(D) Cyanobacteria

Correct Answer: (A) Heterotrophic

WBCS Mains Biology Biotechnology Questions 2020

Q. Penicillin was discovered by
(A) Gregor Mendel
(B) Francis Crick
(C) James Watson
(D) Alexander Fleming

Correct Answer: (D) Alexander Fleming

Q. Asexual reproduction takes place through budding in
(A) Amoeba
(B) Yeast
(C) Plasmodium
(D) Leishmania

Correct Answer: (B) Yeast

Q. PCR is a relatively simple and widely used molecular biology technique to amplify and detect DNA and RNA sequences. PCR stands for
(A) Protein Chain Reaction
(B) Polymerase Chain Reaction
(C) Polymerase Carbon Reaction
(D) Protein Carbon Reaction

Correct Answer: (B) Polymerase Chain Reaction

WBCS Mains Biology Biotechnology Questions 2019

Q. The Golden Rice contains
(A) Vitamin A
(B) Vitamin C
(C) Vitamin E
(D) Vitamin D

Correct Answer: (A) Vitamin A

Q. The Bt cotton is a transgenic crop with gene transfer from
(A) Virus
(B) Bacteria
(C) Fungi
(D) Algae

Correct Answer: (B) Bacteria

Q. A genetically engineered form of brinjal, known as Bt-brinjal, has been developed. The objective of this is
(A) To improve its taste and nutritive qualities
(B) To make it pest-resistant
(C) To make it drought-resistant
(D) To make its shelf-life longer

Correct Answer: (B) To make it pest-resistant

WBCS Mains Biology Biotechnology Questions 2017

Q. Which of the following is used as a bio-fertilizer?
(A) Azolla
(B) Urea
(C) Bagasse
(D) Clostridium

Correct Answer: (A) Azolla

Q. Bacteria was discovered first by
(A) Leeuwenhoek
(B) Louis Pasteur
(C) Robert Hooke
(D) Robert Koch

Correct Answer: (A) Leeuwenhoek

Q. Pasteurization of milk in a dairy farm is conducted by
(A) Ozone
(B) UV rays
(C) Chlorine
(D) Microwave

Correct Answer: (B) UV rays

WBCS Mains Biology Biotechnology Questions 2014

Q. In Bt Cotton, Bt stands for
(A) Bacillus thermoglucosidasius
(B) Bacillus thuringiensis
(C) Bacterium tenericutes
(D) Terminator Bacteria

Correct Answer: (B) Bacillus thuringiensis

Q. A terminator gene in an organism
(A) Kills the organism
(B) Switches off metabolism
(C) Makes the organism sterile
(D) Terminates all protein pathways

Correct Answer: (C) Makes the organism sterile