8.CELL THE UNIT OF LIFEQuestion

NCERT LINE BY LINE QUESTIONS
Cell Structure and Function

1. In living organisms detailed description that brings out their knowledge of diversity is about
A) Their form B) Their appearance

C) Both D) None
2. What brought out the unit of diversity the cellular organisation of all life form:
A) Theory of evolution B) Species theory

C) Cell theory D) Darwinian theory
3. What is not true about physico-chemical approach:-
A) Established by analysis of living tissue for element and compounds.
B) Explains what type of organic compounds is present in living organism.
C) Explains the abnormal process that occur during any diseased condition.
D) This approach is known as forward biology.
4. Unicellular organism are capable of
A) Independent existence
B) Performing the essential functions of life.
C) Both
D) Does not ensure independent living
5. Living cell was firstly seen and described by:-
A) Robert Hooke B) Anton von Leeuwenhoek
C) Robert Koch D) Robert Brown
Cell Theory
6. Cell theory was proposed by:-
A) Matthias Schleiden and Theodore Schwann
B) Schleiden; Schwann and Virchow.
C) Rudolf Virchow D) Sutton and Boveri
7. All the plants are composed of different kinds of cells which forms the tissue of the plant, this
statement was given by:-
A) A German botanist ; Rudolf Virchow .
B) A British zoologist ; Matthias Schleiden
C) A British zoologist ; Theodore Schwann
D) A German botanist; Matthias Schleiden
8. Who studied the different types of animal cells to propose cell theory:-
A) A British zoologist; Matthias Schleiden
B) A German botanist; Theodore Schwann.
C) A physicist; Rudolf Virchow.
D) A British zoologist; Theodore Schwann.
9. A thin outer layer studied by Theodore Schwann nowadays known as:-
A) Plasma membrane B) Cell wall
C) Glycocalyx D) Middle lamella
10. Based on studies of Matthias Schleiden; what is the unique character of plant cell?
A) Cell wall B) Middle lamella
C) Glycocalyx D) None of these
7
11. The hypothesis that the bodies of animals and plant are composed of cells and their
products was proposed by:-
A) Schleiden and Schwann B) Rudolf Virchow
C) Schwann only D) Virchow and Schleiden
12. Scientist who gave the final shape to cell theory?
A) Schleiden B) Schwann
C) Virchow D) Schleiden & Schwann
13. Which of the following is related to cell theory :-
i) All living organisms are composed of cells and product of cells.
ii) Proposed by Schleiden and Schwann.
iii) Modified by Rudolf Virchow
iv) All cells arise from pre – existing cell.
v) “Omnis cellula – e – cellula”
A) Only one of the above B) Only two of the above
C) Only four of the above D) All five
An Overview of Cell
14. What is the delimiting boundary around a human cheek cell?
A) Cell membrane B) Protoplasm
C) Protoplast D) Cell wall
15. What is the Semi – fluid matrix inside the cell?
A) Cell membrane B) Protoplast
C) Cytoplasm D) Nucleus
16. How many of the following statements are not true:-
i) All cells have membrane bound nuclei and nucleolus.
ii) Nucleus contains the chromosome
iii) DNA is the Genetic material.
iv) Cytoplasm is the main arena of cellular activities in plant and animal cells.
A) Only (ii), (iii), & (iv) B) Only (ii) & (iv)
C) Only (i) & (iii) D) Only (i)
17. Besides the nucleus; the _____cell have other membrane bound distinct structures.
A) Eukaryotic B) Prokaryotic
C) Both (a) and (b) D) None of these
18. What is the non – membranous organelle present in both Eukaryotic as well as
Prokaryotic cell
A) Endoplasmic reticulum B) Protein
C) Mitochondria D) Ribosomes of 80s’ type
19. Animal cells have another non – membrane bound cellular organelle known as: -
A) Microbodies B) Nucleus
C) Lysosome D) Centrosome
20. Which of the following is not incorrect?
A) Mycoplasma is the smallest cell -> 0.3 μm in width.
B) Bacteria could be 3 μm to 5 μm in length
C) Human RBCs are about 7.0mm in diameter.
D) Cell’s shape is independent of their work they perform.
Prokaryotic Cell
21. The prokaryotic cells are represented by:-
A) Bacteria B) BGA
C) Mycoplasma & PPLO D) All of these
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22. All prokaryotic cell have this cellular boundary surrounding the cell – membrane except in
mycoplasma
A) Glycocalyx B) Protoplast
C) Cell wall D) Cytoplasm
23. Which of the following is related to prokaryotic cell:-
A) Have no well defined nucleus
B) Have basically naked genomic material.
C) An addition to genomic DNA; the extra – genomic DNA is also present known
as plasmid.
D) All of the above
24. Which of the following confirms certain unique phenotypic characters to some bacteria
A) Chromosomal material
B) Extra chromosomal material
C) Mitochondrial DNA
D) Genetic material present in chloroplast
25. A special form of cell membrane ; which is the characteristic of prokaryotes is:-
A) Plasmid B) Cell wall

C) Cell membrane D) Mesosomes.
26. Which of the following is membrane less bodies other than Ribosomes.
A) Cell wall B) Inclusion

C) Mesosomes D) Chromatophores
27. Which of the following is the essential infolding’s of cell membrane
A) Inclusion B) Mesosome C) Chromatophores D) Plasmid

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NCERT LINE BY LINE QUESTIONS

Cell Structure and Function

A) Their form B) Their appearance

A) Theory of evolution B) Species theory

A) Plasmid B) Cell wall

A) Cell wall B) Inclusion

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