Explore topic-wise MCQs in Biology.

This section includes 114 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.

1.

Significance of mitosis cell division is

A. Increasing cellular mass
B. Swift division
C. Occur in every tissue of body.
D. Producing cell genetically similar to parent cell
Answer» E.
Discussion
2.

Control room of the cell is

A. Mitochondria
B. Nucleus
C. Lysosome
D. Golgi bodies
Answer» C. Lysosome
Discussion
3.

Which of the following features of DNA make if unequaly suited to store and transmit genetic information from generation to generation?

A. Complementary of the two strand
B. Double helix
C. Robbert Hooke
D. Schleiden and Schwann
Answer» C. Robbert Hooke
Discussion
4.

Plasma membrane is made up of

A. Carbohydrates and fats
B. Fats and proteins
C. Proteins and carbohydrates
D. Carbohydrates and proteins
Answer» C. Proteins and carbohydrates
Discussion
5.

Mitochondrial cristae are site of

A. Breakdown of macromolecules
B. Protein synthesis
C. Phosphorylation of flavoprotein
D. Oxidation-reduction reaction
Answer» E.
Discussion
6.

Which of the following structure is present in mitochondria

A. Quantasones
B. Oxusomes
C. Polysomes
D. Dictyosomes
Answer» C. Polysomes
Discussion
7.

Two strand of DNA held together by

A. Nitrogen bond
B. Hydrogen bond
C. Carbon bond
D. Oxygen bond
Answer» C. Carbon bond
Discussion
8.

With reference to the latest developments in stem cell research consider the following statements
1. The only source of human stem cells are the empryos at blastocyst stage.
2. The stem cells can be derived without causing destruction to blastocysts.
3. The stem cells can regnerate themselves in vitro virtually farever.
4. Indian research centres also created a few cell lines which can be developed into many types of tissues. Which of the statement ate coorect?

A. 1, 2 and 4
B. 1, 2 and 3
C. 1, 2 , and 3
D. 3 & 4
Answer» E.
Discussion
9.

Which chemical characteristic is not common in all living organism

A. Type of protein present in body
B. Similar triplet code for amino acid
C. Energy is stored in high phosphate bonds
D. Ribosomes are site of protein synthesis
Answer» B. Similar triplet code for amino acid
Discussion
10.

Prokyarotic Ribosomes are

A. 80 s
B. 70 s
C. 60 s
D. 50 s
Answer» C. 60 s
Discussion
11.

Rigidity of cell wall is due to presence of

A. Cellulose
B. Lignin
C. a and b both
D. Suberin
Answer» D. Suberin
Discussion
12.

The longest cell in human body is

A. Liver cell
B. Muscles cell
C. Nerve cell
D. None of these
Answer» D. None of these
Discussion
13.

The statements "Protoplasm is the physical basis of life" is given by

A. Darwin
B. Purkinje
C. John Ray
D. Hathinths
Answer» C. John Ray
Discussion
14.

Nucleus was discovered by

A. Robert Brown
B. Leeuwenhock
C. Robert Hooke
D. Schleiden and Schwann
Answer» B. Leeuwenhock
Discussion
15.

Both respiration and photosynthesis require

A. Sun light
B. Chlorophyll
C. Glucose
D. Cytochromes
Answer» E.
Discussion
16.

In a living cell what is the site of ribosome formation?

A. Golgi bodies
B. Endoplasmic reticulum
C. Plasma membrane
D. Nucleolus
Answer» E.
Discussion
17.

Grana and stroma lamellae occur in

A. Chloroplast
B. Ribsomes
C. Golgi bodies
D. Mitochondria
Answer» B. Ribsomes
Discussion
18.

Centrioles are found in

A. Green plants
B. Animals
C. Bacteria and cynobacteria
D. Both b and c
Answer» C. Bacteria and cynobacteria
Discussion
19.

Molecular and cellular research centre is situated in

A. Mumbai
B. Kolkata
C. Banglore
D. Hyderabad
Answer» E.
Discussion
20.

Infolding from the inner membrane of mitochondira is called

A. Cristae
B. Cistrnea
C. Oxyosomes
D. Matrix
Answer» B. Cistrnea
Discussion
21.

Which one of the following is considered as a cell withing a cell

A. Ribosome
B. Chloroplast
C. Lysosome
D. Golgi appartus
Answer» D. Golgi appartus
Discussion
22.

Mitochondria are store houses of

A. Glycogen
B. Glucose
C. ATP
D. Fat
Answer» D. Fat
Discussion
23.

True nucleus is absent in

A. Bacteria
B. Fungi
C. Algae
D. Lichens
Answer» B. Fungi
Discussion
24.

cell wall is

A. Permeable
B. Semipermeable
C. Selective permeable
D. Non-permeable
Answer» B. Semipermeable
Discussion
25.

Endoplasmic reticulum remain attached to the

A. Plasma membrane
B. Nucleus
C. Mitochondria
D. Both a and b
Answer» E.
Discussion
26.

Site of protein synthesis in a cell is

A. Lysosomes
B. Ribosomes
C. Mitochondia
D. Golgi bodies
Answer» C. Mitochondia
Discussion
27.

The term cell was first coined b y

A. Swanson
B. Leeuwenhock
C. Robert Hooke
D. Robert brown
Answer» D. Robert brown
Discussion
28.

Plant cells are generally without

A. Ribosomes
B. Plastids
C. Lysosomes
D. Vacoule
Answer» D. Vacoule
Discussion
29.

Cell organelles covered by single membrane

A. Glyoxysome
B. Lysosome
C. Per-oxisome
D. All of these
Answer» E.
Discussion
30.

Nucleoid is present in

A. Procaryotes
B. Protozoa
C. Green algae
D. None of these
Answer» B. Protozoa
Discussion
31.

Which organelles in the cell, other than nucleus contains DNA?

A. Centriole
B. Goalgi apparatus
C. Lysosomes
D. Mitrochondira
Answer» E.
Discussion
32.

Nucleus takes part in synthesis of

A. r RNA
B. t RNA
C. m RNA
D. DNA
Answer» B. t RNA
Discussion
33.

Cell theroy was put forward by

A. Schleiden and Schwann
B. Sulton and Boveri
C. Watson and Crick
D. Darwin an Wallace
Answer» B. Sulton and Boveri
Discussion
34.

Which one of the following is known as power house of cell?

A. Golgi bodies
B. Nucleolus
C. Mitochondria
D. Ribosomes
Answer» D. Ribosomes
Discussion
35.

Function of lysosome is

A. Protein synthesis
B. Processing and packaging
C. Intracellular digestion
D. Synthesis of fat
Answer» D. Synthesis of fat
Discussion
36.

A substance which os more than 80% in the cell is

A. Protein
B. Fat
C. Mineral
D. Water
Answer» E.
Discussion
37.

Energy currency of cell is

A. AMP
B. ATP
C. RNA
D. DNA
Answer» C. RNA
Discussion
38.

Sucidal bag of cell is

A. Lysosomes
B. Ribosomes
C. Nucleosomes
D. Galgi bodies
Answer» B. Ribosomes
Discussion
39.

Attractive colour of flower and seed is due to

A. Heucoplast
B. Chromoplast
C. Chlaroplast
D. Tonoplast
Answer» C. Chlaroplast
Discussion
40.

Which one of following is largest cell organelles?

A. Chromosomes
B. Mitochondria
C. Plastid
D. Golgi bodies
Answer» D. Golgi bodies
Discussion
41.

A plant cell differ from animal in having

A. Chloroplast
B. Cell wall
C. Cell membrane
D. Nucleus
Answer» C. Cell membrane
Discussion
42.

Electron microscope is in invented by

A. Knole & Ruska
B. Schilden & Schwann
C. Fleming & Brown
D. Watson & Crick
Answer» B. Schilden & Schwann
Discussion
43.

Which of the following is present both in plant and animal?

A. Primary wall
B. Cell wall
C. Plasma membrane
D. Plastids
Answer» D. Plastids
Discussion
44.

Which of the followingorganelles found only in plant cell?

A. Cell wall
B. Plastids
C. Vacoules
D. All of these
Answer» E.
Discussion
45.

Site of cellular respiration is

A. Golgi bodies
B. Mitochondria
C. Ribosome
D. Lysosomes
Answer» C. Ribosome
Discussion
46.

Which one of the following is smallest cell?

A. Mycoplasm
B. Amoeba
C. White blood cells
D. Red blood cells
Answer» B. Amoeba
Discussion
47.

Green colour of leaves is due to

A. Chromodtplast
B. Leucoplast
C. Chloroplast
D. Tonoplast
Answer» D. Tonoplast
Discussion
48.

The enzyme found is lysosome is

A. Cell sap
B. Cytoplasm
C. Nucleoplasm
D. Hydrolytic enzyme
Answer» E.
Discussion
49.

Leucoplast found in mainly

A. Cells of root
B. Cells of stem
C. Cells of leaf
D. Cells of flower
Answer» B. Cells of stem
Discussion
50.

Main function of Golgi bodies is

A. Respiration
B. Cell division
C. % produce digestive enzyme
D. Secretory
Answer» E.
Discussion