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Study Material for Class 9 Science Chapter 5 The Fundamental Unit of Life
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Class 9 Science Chapter 5 The Fundamental Unit of Life
CBSE Class 9 Science The Fundamental Unit of Life Sure Shot Questions B. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick to learn flash cards, flow charts, mind maps, teacher notes, important formulas, past examinations question bank, important concepts taught by teachers. Students can download these useful educational material free and use them to get better marks in examinations. Also refer to other worksheets for the same chapter and other subjects too. Use them for better understanding of the subjects.
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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CBSE Class 9 Science Chapter 5 The Fundamental Unit of Life Study Material
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Chapter 5 The Fundamental Unit of Life CBSE Class 9 Study Material Science
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CBSE Study Material Science Class 9 Chapter 5 The Fundamental Unit of Life
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