WBCS Mains Biology Cell Biology & Genetics Questions 2023

Q. Which is not a constituent of cell membrane?
(A) Glycolipids
(B) Phospholipids
(C) Cholesterol
(D) Proline

Correct Answer: (D) Proline

Q. In 2006, Nobel Prize for RNA Interference Phenomenon was won on the work carried out on
(A) D. melanogaster
(B) A. thaliana
(C) C. elegans
(D) S. pombe

Correct Answer: (C) C. elegans

Q. Which component is absent in animal cell membrane?
(A) Cholesterol
(B) Ergosterol
(C) Phospholipid
(D) Oligosaccharide

Correct Answer: (B) Ergosterol

WBCS Mains Biology Cell Biology & Genetics Questions 2022

Q. Which one of the following terms describes the complete set of chemical reactions that occur within cells?
(A) Metabolism
(B) Cellular respiration
(C) Calvin cycle
(D) Bioenergetics

Correct Answer: (A) Metabolism

Q. A micro-organism is viewed through a microscope and is determined to be made of a single cell that lacks organelles. From this information, which one of the following can you conclude?
(A) The organism belongs to Domain Bacteria
(B) The organism belongs to Domain Eukarya
(C) The organism belongs to Domain Archaea
(D) The cell is prokaryotic

Correct Answer: (D) The cell is prokaryotic

Q. During cell divisions, DNA synthesis takes place in
(A) Interphase
(B) Anaphase
(C) Prophase
(D) Telophase

Correct Answer: (A) Interphase

WBCS Mains Biology Cell Biology & Genetics Questions 2020

Q. The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
(A) Cytoplasm
(B) Mitochondria
(C) Chloroplast
(D) Nucleus

Correct Answer: (B) Mitochondria

Q. The nucleus of a living cell was discovered by
(A) Charles Darwin
(B) Robert Hooke
(C) Gregor Mendel
(D) Robert Brown

Correct Answer: (D) Robert Brown

Q. What is the typical size of a prokaryotic cell?
(A) 1–10 meter
(B) 1–10 millimeter
(C) 1–10 micrometer
(D) 1–10 nanometer

Correct Answer: (C) 1–10 micrometer

Q. Cell was discovered by
(A) Charles Darwin
(B) Robert Hooke
(C) Gregor Mendel
(D) Robert Brown

Correct Answer: (B) Robert Hooke

Q. The fundamental organisational unit of life is
(A) Protein
(B) Cell
(C) DNA
(D) RNA

Correct Answer: (B) Cell

WBCS Mains Biology Cell Biology & Genetics Questions 2019

Q. A man of blood group A marries a woman of blood group AB. Which type of progeny would indicate that the man is heterozygous?
(A) O
(B) B
(C) A
(D) AB

Correct Answer: (B) B

Q. Who described the structure of DNA double helix?
(A) Peter Mitchell
(B) Andre Jagendorf
(C) Ernest Uribe
(D) Watson and Crick

Correct Answer: (D) Watson and Crick

Q. Name the RNA molecule which is used to carry genetic information copied from DNA.
(A) tRNA
(B) mRNA
(C) rRNA
(D) snRNA

Correct Answer: (B) mRNA

Q. Which of the following is not a component of the nucleus?
(A) Chromosome
(B) Nucleolus
(C) Cytoplasm
(D) Nuclear envelope

Correct Answer: (C) Cytoplasm

WBCS Mains Biology Cell Biology & Genetics Questions 2018

Q. Worst possible rays responsible for cell mutation and cancer:
(A) β-rays
(B) α-rays
(C) γ-rays
(D) X-rays

Correct Answer: (C) γ-rays

WBCS Mains Biology Cell Biology & Genetics Questions 2017

Q. The study of the microscopic structure of tissues is called
(A) Orology
(B) Osteology
(C) Histology
(D) Seromology

Correct Answer: (C) Histology

WBCS Mains Biology Cell Biology & Genetics Questions 2015

Q. The basic unit of life is
(A) Nucleic acid
(B) Protein
(C) Gene
(D) Lipoprotein

Correct Answer: (D) Lipoprotein

Q. Location of a particular gene on sex chromosome or autosomes can be identified by
(A) Test cross
(B) Out cross
(C) Back cross
(D) Reciprocal cross

Correct Answer: (D) Reciprocal cross

Q. ‘Eugenics’ is the study of
(A) People of European origin
(B) Genetics of plants
(C) Different races of mankind
(D) Altering human beings by changing their genetic components

Correct Answer: (D) Altering human beings by changing their genetic components

Q. Process of cell division can take place by
(A) Heterosis
(B) Fusion
(C) Mitosis
(D) None of the above

Correct Answer: (C) Mitosis

WBCS Mains Biology Cell Biology & Genetics Questions 2014

Q. In human beings, the number of chromosomes in an ordinary cell is
(A) 46
(B) 48
(C) 50
(D) 52

Correct Answer: (A) 46

Q. The discovery of ‘jumping genes’ is associated with the name of
(A) Sir Jagdish Chandra Bose
(B) Sir J. B. S. Haldane
(C) Dr. Barbara McClintock
(D) M. S. Swaminathan

Correct Answer: (C) Dr. Barbara McClintock

Q. DNA was discovered by
(A) Hargovind Khorana
(B) James Watson and Francis Crick
(C) Francis Crick and Alexander Fleming
(D) James Watson and Hargovind Khorana

Correct Answer: (B) James Watson and Francis Crick