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Access comprehensive study materials and useful resources for Chapter 05 The Fundamental Unit of Life using the CBSE Class 9 Science The Fundamental Unit of Life Sure Shot Questions Set 02. Designed to align with the 2026-27 CBSE academic guidelines, these advanced resources help Class 9 Science students reinforce core concepts beyond standard textbooks.
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Question. Mitochondria stores energy in from of
(A) Heat energy
(B) ATP
(C) light energy
(D) none of the above
Answer : B
Question. Which of the following is called as ‘Suicidal bags’ ?
(A) Centrosome
(B) Lysosome
(C) Microsome
(D) Mesosomes
Answer : B
Question. Which of the following organelle is the site of Kreb cycle?
(A) Ribosome’s
(B) Lysosomes
(C) eukaryotic cells
(D) Nucleus
Answer : C
Question. Mitochondria are absent in
(A) Prokaryotic cells
(B) RBC of mammals
(C) eukaryotic cells
(D) (A) and (B) Both
Answer : D
Question. Eukaryotic ribosomes are
(A) 30s
(B) 50s
(C) 80s
(D) 70s
Answer : C
Question. Tonoplast is the membrane surrounding the
(A) cytoplasm
(B) vacuole
(C) nucleus
(D) mitochondria
Answer : B
Question. The ATP synthesizing units of Mitochondria are
(A) Oxysomes
(B) peroxysomes
(C) glyoxysomes
(D) lysosomes
Answer : A
Question. What is more abundant in smooth endoplasmic reticulum?
(A) Cistemae and vesicle
(B) Tubules
(B) Tubules and vesicles
(C) Cistemae
Answer : B
Question. Mitochondria are concerned with
(A) Kreb cycle
(B) C, cycle
(C) glycolysis
(D) none of the above
Answer : A
Question. Lipid synthesis is performed by
(A) Rough ER
(B) smooth ER
(C) both of above
(D) none of the above
Answer : B
Question. Who observed Mitochondria at first?
(A) Porter
(B) Palade
(C) Koliker
(D) Camilo Golgi
Answer : C
Question. Striking difference between a plant cell and an animal cell is due to the presence
(A) mitochondria
(B) plasma membrane
(C) cell wall
(D) ribosome
Answer : C
Question. In prokaryotic cell
(A) nucleus is developed
(B) membrane bounded organelles are present
(C) double membrane bounded organelles are absent
(D) none of these
Answer : C
Question. Lysosomes are responsible for
(A) protein synthesis
(B) digestion of organic molecules
(C) fat synthesis
(D) fat emulsification
Answer : B
Question. Plastids that are white in colour (Pigment free)
(A) chloroplast
(B) lysosome
(C) leucoplast
(D) Chromoplast
Answer : C
Question. A typical plant cell contains
(A) cell well
(B) plastids
(C) large vacuole
(D) all of the above
Answer : D
THE FUNDAMENTAL UNIT OF LIFE
1. Who expanded cell theory by suggesting that all cells arise from pre-existing cells?
2. In which year electron microscope was invented?
3. Name the book in which Robert Hooke published his observations about cork cells.
4. Who discovered nucleus in the cell?
5. Name the two postulates of the cell theory.
6. Who coined the term 'protoplasm'?
7. Name the largest cell?
8. Name the world's smallest cell.
9. Name the smallest cell in human body.
10. Name the biggest cell in human body.
11. Name the longest cell in human body.
12. Name the cell in human body which cannot reproduce.
13. Give an example of anucleate cell i.e. cell without nucleus.
14. Give an example of cells containing two nuclei (Binucleate).
15. Give examples of cells which are muti-nucleate (i.e. having many nuclei).
16. What is the plasma membrane composed of?
17. Who proposed fluid-mosaic model of cell or plasma membrane?
18. Is plasma membrane permeable or selectively permeable?
19. What are different types transport of components across cell membrane?
20. Define Passive Transport.
21. What is diffusion?
22. Define Osmosis. What are different types of osmosis? Give examples of osmosis.
23. What is plasmolysis?
24. What would happen if the plasma membrane ruptures or breaks down?
25. What do you mean by Endocytosis? How does an Amoeba obtain its food?
26. Define Exocytosis.
27. Why are lysosomes known as suicide bags?
28. What happens to a cell (plant cell or animal cell) when placed in the following solutions:
(a) Hypotonic solution
(b) Isotonic solution
(c) Hypertonic solution
29. Place a de-shelled egg in water for five minutes. What do you observe? (Note: De-shelled egg means,the shell of an egg is removed by dissolving it in dilute hydrochloric acid. The shell is mostly calcium carbonate. A thin outer skin now encloses the egg.)
What will happen if a de-shelled egg in a concentrated salt solution for 5 minutes?
30. Put dried raisins in plain water and leave them for some time. Then place them in concentrated solution of sugar or salt. What do you observe in both cases?
(a) Uni cellular micro-organisms
(b) Bi-Cellular micro-organisms
(c) Multi-cellular micro-organisms
(d) Non-cellular micro-organisms
32. Who is known as Father of Biology?
34. Which cell organelle is known as "protein factory"?
35. What is the energy currency of the cell called?
36. When chromosomes are visible in the nucleus?
37. Which of the following is NOT involved in the synthesis of proteins?
(b) smooth ER
(c) Golgi body
(d) ribosomes
38. Are plastids present in all cells? What are its types?
39. Name the sac like structure which form the grana?
40. What are the conditions for osmosis?
41. Will the temperature have any effect on the process of the osmosis?
42. What is osmoregulation?
43. Which organ of the plant body helps in osmoregulation?
44. Which organelle of the cell in animals helps in osmregulation?
45. What are centrosomes? What functions do they perform?
46. Who is known as 'Father of Microscopy'?
47. Are Viruses Prokaryotic or Eukaryotic?
48. Which of the following often distinguishes plant cells from animal cells?
(a) centrioles
(b) nucleus
(d) rough ER
49. Which cell organelle is called "kitchen of plant"?
50. Which cell organelle is called 'control center'?
51. Which cell organelle is called 'transport system'?
52. What is Endoplasmic Reticulum(ER)? Name its types?
53. What are the functions of Endoplasmic Reticulum (ER)?
54. What are the components nucleus?
55. What is the function of nucleoplasm?
57. What are chromosomes?
58. What is the full form of DNA and RNA?
59. Who discovered Virus?
60. What are the function of nucleus?
61. Why can't single cells grow very large? Or Big organisms like human beings are multicellular? Why can't such big organisms be a single large cell?
63. Why do we stain cells while observing under microscope? List commonly used stains.
64. Are there any exceptions to cell theory proposed by Schleiden & Schwann and Virchow?
If yes, what are those?
65. What is the thickness of cell membrane?
66. Why is mitochondria absent in red blood cells?
67. Name the cell organelles which their own DNA and Ribosomes.
68. What is cytoskeleton?
69. Name the cell organelles involved in synthesis, packaging and movement of protein (or other macromolecules) inside a cell.
70. Which of the following is an example of a single cell that does not function as a full fledged organism?
(b) Amoeba
(c) WBC and Amoeba
(d) Paramecium
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