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Q. No.Which of the following is not a part of the cell theory?
I.
All living organisms are composed of cells.
II.
The cell is the basic unit of life.
III.
All cells come from pre-existing cells through sexual reproduction.
1. Only I and II
2. Only III
3. Only I
4. I, II and III
Subtopic: Cell Theory |
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Match the following organelles with their functions:
1. 1-D, 2-B, 3-A, 4-C
2. 1-C, 2-D, 3-B, 4-A
3. 1-B, 2-A, 3-D, 4-C
4. 1-B, 2-C, 3-A, 4-D
| Column I | Column II | ||
| 1. | Chloroplast | A. | Protein synthesis |
| 2. | Peroxisome | B. | Photosynthesis |
| 3. | Nucleolus | C. | Detoxification |
| 4. | Centrosome | D. | Cell division |
1. 1-D, 2-B, 3-A, 4-C
2. 1-C, 2-D, 3-B, 4-A
3. 1-B, 2-A, 3-D, 4-C
4. 1-B, 2-C, 3-A, 4-D
Subtopic: Eukaryotic Cell Orgenelle |
93%
From NCERT
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The primary function of the cell wall in plant cells is to:
1. control the entry and exit of substances
2. provide structural support and protection
3. conduct photosynthesis
4. store genetic information
1. control the entry and exit of substances
2. provide structural support and protection
3. conduct photosynthesis
4. store genetic information
Subtopic: Cell Wall |
96%
From NCERT
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What role does the cell membrane play in maintaining homeostasis within animal cells?
| 1. | It synthesizes proteins that regulate cellular functions. |
| 2. | It selectively allows substances to enter and exit the cell, maintaining the internal environment. |
| 3. | It provides structural support to maintain the shape and integrity of the cell. |
| 4. | It stores genetic material and coordinates cell division. |
Subtopic: Cell Membrane |
90%
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What will not be true for a prokaryotic bacterial cell?
| 1. | Mesosomes help in DNA replication and distribution to daughter cells. |
| 2. | Gram staining is based on the difference in the composition of cell wall of different bacteria. |
| 3. | The axonemal microtubular arrangement in prokaryotes is characterized as 9 + 2. |
| 4. | Plasmids are extrachromosomal circular double stranded DNA molecules. |
Subtopic: Cytoskeleton |
68%
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Regarding cell wall in plants:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | Middle lamella is made up of calcium pectate. |
| II: | Primary wall is capable of growth. |
| III: | Secondary wall is formed on the inner [towards membrane] side of the cell. |
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Cell Wall |
84%
From NCERT
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Consider the given two statements:
| Assertion (A): | The nucleus is the control centre of the cell and contains the genetic material (DNA). |
| Reason (R): | The nucleus directs protein synthesis through messenger RNA (mRNA) molecules. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Nucleus |
53%
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What is the primary function of the nucleolus found within the nucleus?
| 1. | It is the site of ribosome assembly. |
| 2. | It serves as the storage area for DNA. |
| 3. | It is responsible for the synthesis of lipids. |
| 4. | It plays a role in cell division. |
Subtopic: Nucleus |
75%
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Which of the following functions is associated with the Rough Endoplasmic Reticulum (RER)?
1. Synthesis of steroid hormones
2. Detoxification of drugs and poisons
3. Synthesis of proteins destined for secretion
4. Storage of calcium ions
1. Synthesis of steroid hormones
2. Detoxification of drugs and poisons
3. Synthesis of proteins destined for secretion
4. Storage of calcium ions
Subtopic: Endomembrane System (Endoplasmic Reticulum) |
91%
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What are chromatophores in prokaryotic cells?
| 1. | Lipopolysaccharide layer of gram negative bacteria |
| 2. | Colored pigments in fluorescent bacteria |
| 3. | Carbon concentrating compartments in photosynthetic bacteria |
| 4. | Membrane-bound vesicles containing photosynthetic pigments |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
70%
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