Chapter 5
The Fundamental Unit of Life
MCQs
Q 1.: Chemically cellulose is a
(A) Lipid
(B) Protein
(C) Polysaccharide
(D) Amino acid
Option – C
Q 2.: Cell theory was modified by
(A) Robert Brown
(B) Huxley
(C) Rudolf Virchow
(D) Purkinje
Option – C
Q 3.: The structural or functional unit of life is
(A) Tissue
(B) Cell
(C) Organ
(D) Organ system
Option – B
Q 4.: The outer most layer of human cheek cells is
(A) Cytoplasm
(B) Cell wall
(C) Plasma membrane
(D) Nuclear membrane
Option – C
Q 5.: In plants cell, cell wall is
(A) Rigid and nonliving
(B) Dynamic and living
(C) Dynamic and nonliving
(D) Rigid and living
Option – A
Q 6.: Nucleolus is seat of
(A) mRNA synthesis
(B) ATP synthesis
(C) Protein synthesis
(D) Ribosome synthesis
Option – D
Q 7.: Human RBCs are placed in a solution. They swell up and finally rupture. The solution is
(A) Isotonic
(B) Hypotonic
(C) Hypertonic
(D) None of these
Option – B
Q 8.: Cell wall in plant cells is made of
(A) Starch
(B) Glycogen
(C) Cellulose
(D) Chitin
Option – C
Q 9.: The outermost covering of a plant cell is
(A) Plasma membrane
(B) Nuclear membrane
(C) Vacuole membrane
(D) Cell wall
Option – D
Q 10.: The organelle not present in human cheek cells is
(A) Nucleus
(B) Plasma membrane
(C) Mitochondria
(D) Chloroplast
Option – D
Q 11.: This provides mechanical support to the cell
(A) Endoplasmic reticulum
(B) Lysosome
(C) Cilia
(D) Golgi complex
Option – A
Q 12.: Cell secretion is carried out by
(A) Nucleolus
(B) Plastids
(C) Golgi complex
(D) Endoplasmic reticulum
Option – C
Q 13.: This forms the physical basis of life
(A) Ectoplasm
(B) Protoplasm
(C) Nucleoplasm
(D) Endoplasm
Option – B
Q 14.: Protoplasm is
(A) True solution
(B) Suspension
(C) Colloidal solution
(D) none of these
Option – C
Q 15.: ‘Suicide bag’ in a cell is
(A) Lysosome
(B) Ribosome
(C) Contractile vacuole
(D) Nucleus
Option – A
Q 16.: Golgi complex is absent in
(A) Liver cells
(B) Yeast
(C) Higher plants
(D) Blue-green algae
Option – D
Q 17.: Cell vacuole contains
(A) Water
(B) Cytoplasm
(C) Metabolic wastes
(D) Water and dissolved substances
Option – D
Q 18.: Autolysis is connected with
(A) Ribosome
(B) Lysosome
(C) kinetosome
(D) Spherosome
Option – B
Q 19.: Lysosomes are reservoir of
(A) RNA
(B) Fat
(C) Hydrolytic enzymes
(D) Secretory glycoprotein
Option – C
Q 20.: Mitochondria are seat of
(A) ATP formation
(B) Electron transport
(C) Cellular respiration
(D) All of these
Option – D
Q 21.: _______________ is called the energy currency of the cell
(A) ATP
(B) Oxygen
(C) Endoplasmic reticulum
(D) Mitochondria
Option – A
Q 22.: __________________ is called the powerhouse of the cell
(A) Mitochondria
(B) ATP
(C) Lysosome
(D) Red blood cells
Option – A
Q 23.: Which of the following statements is incorrect?
(A) Cytoplasm is also known as protoplasm
(B) Lysosomes are known as the suicide bags of the cell
(C) Mitochondria has its own DNA
(D) All of the above are incorrect
Option – A
Q 24.: Which of the following is not a function of the vacuole in plants?
(A) They store toxic metabolic wastes
(B) They help with the process of cell division
(C) They help to maintain turgidity
(D) They provides structural support
Option – B
Q 25.: Where are the essential proteins and lipids required for cell membrane, manufactured?
(A) Lysosome
(B) Chromosomes
(C) Endoplasmic reticulum
(D) Mitochondria
Option – C
Q 26.: Which of the following can be made into crystals?
(A) A bacterium
(B) An amoeba
(C) A virus
(D) A sperm
Option – C
Q 27.: Chromosome are made up of
(A) DNA and Protein
(B) Protein
(C) DNA
(D) RNA
Option – A
Q 28.: Plasmolysis in a plant cell is defined as
(A) Breakdown (lysis) of plasma membrane in hypotonie medium
(B) Shrinkage cytoplasm in hypertonic medium
(C) Shrinkage of nucleoplasm
(D) None of them
Option – B
Q 29.: Which of the following are covered by a single membrane?
(A) Vacuole
(B) Mitochondria
(C) Lysosome
(D) Plastid
Option – A
Q 30.: Which cell organelle plays a crucial role in de-toxifying many poisons and drugs in a cell?
(A) Golgi apparatus
(B) Lysosomes
(C) Smooth endoplasmic reticulum
(D) Vacuoles
Option – C
Q 31.: Vacuoles provide:
(A) Rigidity
(B) Turgidity
(C) Shape
(D) Both (a) and (b)
Option – B
Q 32.: The process which occurs when dry raisins are soaked in water is called_____________.
(A) Endosmosis
(B) Exosmosis
(C) Endocytosis
(D) Diffusion
Option – A
Q 33.: Before scraping the inner side of cheek to prepare a temporary mount of cheek cell, the mouth is rinsed to:
(A) Remove food particles
(B) Make it alkaline
(C) Avoid Injury
(D) Make it acidic
Option – A
Q 34.: An undefined nuclear region of prokaryotes is known as_________
(A) Nucleus
(B) Nucleoid
(C) Nucleolus
(D) Nucleic acid
Option – B
Q 35.: Which one of the following has their own DNA?
(A) Golgi apparatus
(B) Mitochondria
(C) Chloroplast
(D) Both ‘B’ and ‘C’
Option – D
Q 36.: A cover slip is placed over the specimen to:
(A) Prevent the tissue from drying
(B) Prevent glycerine from leaking out
(C) Remove extra strain and water
(D) Crush the cells in order to see the organelles clearly
Option – D
Q 37.: While observing a human cheek cell, under a microscope, what students will not observe
(A) Chloroplast
(B) Mitochondria
(C) Nucleus
(D) Ribosomes
Option – A
Q 38.: A cell organelle that is not surrounded by a membrane is the _____.
(A) Chloroplast
(B) Ribosome
(C) Endoplasmic reticulum
(D) Golgi apparatus
Option – B
Q 39.: Gaseous exchange in cells takes place by:
(A) Exocytosis
(B) Diffusion
(C) Osmosis
(D) Endocytosis
Option – B
Q 40.: Identify the common feature of mitochondria and plastids?
(A) Ability to produce ATP
(B) Presence of matrix called stroma
(C) Presence of DNA and ribosomes
(D) Deeply folded inner membrane
Option – C
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