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mcqs of
,
1 : The smooth endoplasmic reticulum (SER) is primarily involved in the synthesis of:
A
:
Proteins
B
:
Lips
C
:
Carbohydrates
D
:
Nucleic acids
2 : Which cell organelle is involved in packing and modifying proteins?
A
:
Golgi apparatus
B
:
Nucleus
C
:
Lipid synthesis
D
:
DNA synthesis
3 : Which cell organelle is responsible for breaking down waste material?
A
:
Golgi
B
:
Nucleus
C
:
Mitochondria’s
D
:
Lysosome
4 : Which of the following cell structure is involved in maintaining shape?
A
:
Cytoskeleton
B
:
Nucleolus
C
:
Nucleus
D
:
Lissome
5 : Which specializes region of the nucleus is responsible for ribosome assembly:
A
:
Nucleoplasm
B
:
Nucleolus
C
:
Chromatin
D
:
Chromatin
6 : Ribosomes are compared of:
A
:
RNA and protein
B
:
DNA
C
:
Carbohydrates and lipids
D
:
RNA and carbohydrates
7 : Which is the main function of the nuclear pores?
A
:
Regulation of cell division
B
:
Protein synthesis
C
:
Control
D
:
Control of transport of molecules
8 : The process of cellular respiration occurs in:
A
:
Nucleus
B
:
Mitochondria
C
:
Ribosomes
D
:
Golgi apparatus
9 : What is the primary function of ribosomes?
A
:
Energy production
B
:
protein synthesis
C
:
Golgi apparatus
D
:
Endoplasmic
10 : Which of the following cellular structure is found in animal cells and helps in cell division?
A
:
Cell membrane
B
:
Centriole
C
:
Plamodesma
D
:
Vacuole
11 : Which organelle can double its number by itself?
A
:
Ribosomes
B
:
Lysosomes
C
:
Mitochondria
D
:
Vacuoles
12 : In a multicolor plant cell type responsible for the production of glucose?
A
:
Xylem
B
:
Lysosomes
C
:
Mitochondria
D
:
Golgi apparatus
13 : Which sub- cellar organelle plays a crucial in energy production within the cell?
A
:
Endoplasmic reticulum
B
:
Golgi apparatus
C
:
Mitochondria
D
:
Lysosomes
14 : Which of these are present on the surface of through endoplasmic reticulum?
A
:
Ribosomes
B
:
Lysosomes
C
:
Mitochondria
D
:
Vacuoles
15 : The cell wall of fungi is made of:
A
:
Chitin
B
:
Cellulose
C
:
Lignin
D
:
Peptidoglycan
16 : The cell wall of prokaryotic cells is made up of:
A
:
Cellulose
B
:
Lignin
C
:
Chitin
D
:
Peptidoglycan
17 : Pores through which cytoplasm of adjacent cells is connected:
A
:
Stomata
B
:
Plasmodesmata
C
:
Lenticels
D
:
Cuticle
18 : Fluid Mosaic Model belongs to:
A
:
Cell wall
B
:
Cell Membrane
C
:
Dermis
D
:
Pericycle
19 : Cell walls are found in these organisms, except:
A
:
Plants
B
:
Animals
C
:
Bacteria
D
:
Fungi
20 : Which of these do not have cell wall?
A
:
Fungi
B
:
Algae
C
:
Prokaryote
D
:
Protozoa
21 : The most common chemical in Primary Cell Wall is:
A
:
Glucose
B
:
Cellulose
C
:
Fructose
D
:
Maltose
22 : Microtubules are made of ______ protein:
A
:
Haemoglobin
B
:
Myoglobin
C
:
Actin
D
:
Tubulin
23 : Chromosomes are composed of:
A
:
DNA
B
:
RNA
C
:
DNA and Protein
D
:
RNA and Protein
24 : Microfilaments are made up of a protein:
A
:
Actin
B
:
Tubulin
C
:
Flagellin
D
:
Myosin
25 : Ribosomes are synthesized in:
A
:
Nucleolus
B
:
Nucleus
C
:
Endoplasmic Reticulum
D
:
None of these
26 : It is the site for protein synthesis:
A
:
Ribosomes
B
:
Vacuoles
C
:
Mitochondria
D
:
Nucleus
27 : Structure of cell that is not organelle:
A
:
Cytoplasm
B
:
Ribosome
C
:
Mitochondria
D
:
Golgi apparatus
28 : Which is not component of cell membrane:
A
:
Proteins
B
:
DNA
C
:
Lipids
D
:
Carbohydrates
29 : Basically cell membrane is composed of:
A
:
Lipids and carbohydrates
B
:
Carbohydrates and proteins
C
:
Proteins and vitamins
D
:
Lipids and proteins
30 : The fluidity of cell membrane is due to:
A
:
Protein
B
:
Vitamin
C
:
Lipid
D
:
Glycerin
31 : Microscopic digestive enzymes are found in:
A
:
Ribosomes
B
:
Lysosomes
C
:
Mitochondria
D
:
Plastids
32 : Each ribosome is made up of equal amount of rRNA and …….
A
:
Lipids
B
:
Proteins
C
:
Carbohydrates
D
:
DNA
33 : Elasticity of cell membrane is due to:
A
:
Lipid
B
:
Water
C
:
Protein
D
:
Vitamin
34 : All membranes of cell are called:
A
:
Cell membranes
B
:
Cell wall
C
:
Plasma membranes
D
:
Biological membranes
35 : The site where ribosomal RNA are formed is called:
A
:
Chromatin
B
:
Cytoplasm
C
:
Mitochondrion
D
:
Nucleolus
36 : The function of mitochondria is:
A
:
Proteins synthesis
B
:
Lipid storage
C
:
Cellular respiration
D
:
Photosynthesis
37 : Inner layers of mitochondria are called:
A
:
Cristae
B
:
Thylakoids
C
:
Matrix
D
:
Stroma
38 : Which of the organelles have their own DNA:
A
:
Endoplasmic reticulum
B
:
Mitochondria
C
:
Centrioles
D
:
Golgi bodies
39 : The organelle which produces energy is:
A
:
Mitochondria
B
:
Ribosome
C
:
Nucleus
D
:
Vacuole
40 : Microscopic sites of Aerobic Respiration are:
A
:
Mitochondria
B
:
Plastids
C
:
Lysosomes
D
:
Centrioles
41 : The chloroplast functions in:
A
:
ATP synthesis
B
:
Protein synthesis
C
:
Photosynthesis
D
:
DNA replication
42 : Microscopic amino acids is found in:
A
:
Mitochondria
B
:
Golgi apparatus
C
:
Ribosomes
D
:
Chloroplast
43 : Pile of thylakoid membrane is called:
A
:
Granum
B
:
Stroma
C
:
Matrix
D
:
Cristae
44 : Microscopic amino acids are called:
A
:
Chloroplast
B
:
Leucoplast
C
:
Chromoplast
D
:
Ribosomes
45 : Fluid of Chloroplast is called:
A
:
Cytoplasm
B
:
Cytosol
C
:
Stroma
D
:
Nucleoplasm
46 : Rough endoplasmic reticulum serves a function in the synthesis of:
A
:
Carbohydrates
B
:
Protein
C
:
Lipids
D
:
Vitamin
47 : Who discovered lysosomes?
A
:
Rene de Duve
B
:
Aristotle
C
:
Robert Brown
D
:
Robert Hooke
48 : Microscopic amino acids are not bound by membranes and are also found in prokaryotes:
A
:
Centrioles
B
:
Vacuoles
C
:
Mitochondria
D
:
Ribosomes
49 : Golgi was awarded Nobel Prize in:
A
:
1908 A.D
B
:
1807 A.D
C
:
1906 A.D
D
:
1916 A.D
50 : The flattened sacs in cell are called:
A
:
thylakoid
B
:
cristae
C
:
cisternae
D
:
centriole
51 : Cisternae belongs to:
A
:
Mitochondrion
B
:
Golgi Apparatus
C
:
Vacuole
D
:
Nucleus
52 : In 1947 Noble Prize of Physiology and medicines won by:
A
:
Rene de Duve
B
:
Golgi
C
:
Lamarck
D
:
Carl Cori
53 : The organelles which work for the breakdown of food and waste materials within cell:
A
:
ribosomes
B
:
lysosomes
C
:
chromosomes
D
:
centrioles
54 : What provides structural support and protection to plant cells?
A
:
Plasma membrane
B
:
Cell wall
C
:
Chloroplasts
D
:
Centrioles
55 : What is the primary function of chloroplasts in plant cells?
A
:
Cellular respiration
B
:
Photosynthesis
C
:
Protein synthesis
D
:
Waste storage
56 : What structure in plant cells stores water, nutrients, and waste products?
A
:
Nucleus
B
:
Chloroplast
C
:
Central vacuole
D
:
Lysosome
57 : Which structure allows communication and transport between plant cells?
A
:
Plasmodesmata
B
:
Centrioles
C
:
Cilia
D
:
Flagella
58 : Which structure in animal cells is responsible for breaking down waste materials?
A
:
Lysosome
B
:
Chloroplast
C
:
Vacuole
D
:
Nucleus
59 : What is the purpose of flagella in some animal cells, such as sperm cells?
A
:
Communication between cells
B
:
Movement and propulsion
C
:
Photosynthesis
D
:
Water storage
60 : Which cells are specialized for photosynthesis in plants?
A
:
Epidermal cells
B
:
Mesophyll cells
C
:
Muscle cells
D
:
Liver cells
61 : What is the function of guard cells in leaves?
A
:
Photosynthesis
B
:
Regulating stomata
C
:
Absorbing water
D
:
Protecting internal tissues
62 : What pigment is present in chloroplasts of mesophyll cells?
A
:
Haemoglobin
B
:
Chlorophyll
C
:
Melanin
D
:
Keratin
63 : Which muscle cells are branched and striated?
A
:
Smooth muscle cells
B
:
Skeletal muscle cells
C
:
Cardiac muscle cells
D
:
None of the above
64 : What is the shape of smooth muscle cells?
A
:
Spindle-shaped
B
:
Striated
C
:
Branched
D
:
Circular
65 : Which cells are responsible for carrying oxygen in the body?
A
:
Neurons
B
:
Liver cells
C
:
Red blood cells
D
:
Muscle cells
66 : What protein allows red blood cells to carry oxygen?
A
:
Actin
B
:
Myosin
C
:
Haemoglobin
D
:
Keratin
67 : What structures in neurons receive nerve impulses?
A
:
Axons
B
:
Cell bodies
C
:
Dendrites
D
:
Nuclei
68 : Which organ contains hepatocytes?
A
:
Lungs
B
:
Heart
C
:
Liver
D
:
Stomach
69 : What is the role of root hairs in epidermal cells of roots?
A
:
Protecting internal tissues
B
:
Increasing surface area for water and mineral absorption
C
:
Regulating stomata
D
:
Transporting nutrients to leaves
70 : Which of the following is absent in mature red-blood cells in mammals?
A
:
Nucleus
B
:
Mitochondria
C
:
Endoplasmic reticulum
D
:
All of the above
71 : Which muscle cells are voluntary in action?
A
:
Smooth muscle cells
B
:
Skeletal muscle cells
C
:
Cardiac muscle cells
D
:
None of the above
72 : Where are smooth muscle cells found?
A
:
Heart walls
B
:
Alimentary canal
C
:
Brain
D
:
Bones
73 : What is the main function of peroxisomes in liver cells?
A
:
Detoxification of toxic substances
B
:
Storage of glycogen
C
:
Absorption of nutrients
D
:
Photosynthesis
74 : What structures in neurons carry impulses away from the cell body?
A
:
Dendrites
B
:
Axons
C
:
Nuclei
D
:
Synapses
75 : What is the term used for unspecialized cells that can differentiate into specialized cells?
A
:
Muscle cells
B
:
Stem cells
C
:
Nerve cells
D
:
Red blood cells
76 : Where are stem cells found in the body throughout life?
A
:
Only in the zygote
B
:
In specific parts like bone marrow, skin, and liver
C
:
Only in blood
D
:
In all specialized cells
77 : What do stem cells in the bone marrow produce?
A
:
Skin cells and nerve cells
B
:
Blood cells and immune cells
C
:
Muscle cells and red blood cells
D
:
Liver cells and bone cells
78 : In which phase of cell cycle, maximum growth occurs in cell?
A
:
M phase
B
:
S phase
C
:
G1 phase
D
:
G2 phase
79 : In which phase of cell cycle, the chromosomes duplicate?
A
:
Mitosis
B
:
G1 phase
C
:
G2 phase
D
:
S phase
80 : Which of the following is NOT a characteristic of mitosis?
A
:
It occurs in somatic cells
B
:
It results in genetically identical daughter cells
C
:
The chromosome number is halved in daughter cells
D
:
It results in the formation of two daughter cells
81 : At which stage of mitosis chromosomes line up in the centre?
A
:
Prophase
B
:
Metaphase
C
:
Anaphase
D
:
Telophase
82 : If you observe a cell in which nuclear membrane is reforming around two sets of chromosomes, what stage of cell cycle is this?
A
:
Anaphase
B
:
Telophase
C
:
Prophase
D
:
Metaphase
83 : Which one is the main component of Plant Cell Wall?
A
:
Chitin
B
:
Peptidoglycan
C
:
Cellulose
D
:
Cholesterol
84 : How does the centrosome contribute to mitosis?
A
:
Initiates DNA replication
B
:
Makes mitotic spindle
C
:
Forms the nuclear envelope
D
:
Duplicates organelles
85 : Centrosomes make mitotic spindle in:
A
:
Animal cells
B
:
Plant cells
C
:
Prokaryotic cells
D
:
All of these
86 : An organism has 4 pairs of chromosomes. After meiosis-I, how many chromosomes and chromatids will be present in each daughter cell?
A
:
8 chromosomes and 16 chromatids
B
:
4 chromosomes and 8 chromatids
C
:
4 chromosomes and 4 chromatids
D
:
8 chromosomes and 8 chromatids
87 : Which event is unique to meiosis but not mitosis?
A
:
DNA replication
B
:
Chromosome alignment
C
:
Crossing over
D
:
Nuclear division
88 : Why is meiosis-II necessary after meiosis-I?
A
:
To replicate chromosomes
B
:
To reduce chromosome number
C
:
To separate sister chromatids
D
:
To ensure genetic recombination
89 : Nucleus in plant cell was discovered in:
A
:
1831
B
:
1834
C
:
1883
D
:
1664
90 : Ribosomes are sites for synthesizing of:
A
:
Protein
B
:
RNA
C
:
DNA
D
:
Glucose
Chapter 3 : The Cell
Biology 9th MCQs || Ilam Ghar
Biology 9th