Science Question Bank SA - 1 - CBSE (CCE)
THE FUNDAMENTAL
UNIT OF LIFE
5
Exercise 5.1
Topics :
What are living organisms made up of ?
What is a cell made up of ?
What is the structural organisation of a cell?
1 MARK
1.
(2014)
What is the meaning of cell as derived from Latin word ?
Ans.Little Room
2.
Ans. (i) Mitochondria
3.
(2013)
Name two organelles that contain their own genetic material.
(ii) Plastids
Identify the cell organelle which is known as the power house of the cell. State reason.
(2012, 2013)
Ans. Mitochondria.
Because it releases the energy required for various chemical activities.
4. Name the process through which an amoeba acquires its food from the external
environment.
(2011, 2013)
Ans. Endocytosis.
5. (2014)
Name two cell organelles which have their own DNA and Ribosomes.
Ans. Mitochondria and Plastids
6.
State the chemical composition of the solid matrix of cartilage.
(2014)
Ans.Proteins and sugar
7.Name the processes by which CO2 and H2O move into and out of the cell ?
(2012)
Ans.By diffusion and osmosis.
8.Who discovered cells in living organisms ? Give an example of a unicellular organism.
(2011, 2013)
Ans.Robert Hooke. Eg: Amoeba
9.
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State the full form of ATP.
(2014)
TEACHERS FORUM
ScienceThe
Question
Bank SA
- 1 -ofCBSE
Fundamental
Unit
Life (CCE)
Ans.Adenosine triphosphate.
(2013) 10. Name the main substance of which the cell wall is composed of.
Ans. Cellulose.
11. Name the cell organelle which is generally small sized in animal cells and large in
plant cells. (2013)
Ans. Vacuoles.
12. Which cell organelle detoxifies poisons and drugs in liver of vertebrates?(2012, 2013)
Ans. Endoplasmic reticulum.
(2012)
13.Name the plastid which stores starch, oils and protein granules.
Ans.Leucoplast.
14. Name the process in which diffusion takes place through a selective permeable
membrane. (2014)
Ans.Osmosis.
(2012, 2013)
15. What do you understand by the term ‘membrane biogenesis’ ?
Ans.The proteins (prepared by RER) and lipids (prepared by SER) are used in formation
of plasma membrane.
(2014)
16. List any two single celled (unicellular) organisms.
Ans. Amoeba, chlamydomonas, Paramoecium and bacteria
17. Name the cell organelle that detoxifies poisons and drugs into liver of vertebrates.
(2012)
Ans. Smooth Endoplasmic Reticulum
18. Identify and name the following cell structures :
(a) The undefined nuclear region of prokaryotic cell. (b) Site of energy release inside the cell.
Ans. (a) Nucleoid
(b) (2011, 2013)
Mitochondria
19. Name the cell organelle which you would associate with elimination of old and worn
out cells. (2014)
Ans.Lysosomes
20. Name the kind of plastid which is important for photosynthesis in leaves of the plants.
(2014)
Ans.Chloroplast
21. Name the main constituent substance present in plant cell wall and state its function.
(2011)
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TEACHERS FORUM