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Q. No.Regarding cell wall in plants:
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%
From NCERT
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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%
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 |
89%
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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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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Which of the following is not a part of the cell theory?
1. Only I and II
2. Only III
3. Only I
4. I, II and III
| 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 |
72%
From NCERT
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Identify the correct match:
Codes:
| Column I | Column II | ||
| A | Lysosomes | P | Membrane bound organelle formed by growth and division from pre-existing organelles and/or by de novo synthesis and further maturation from the ER. |
| B | Peroxisome | Q | Oxidative phosphorylation |
| C | Mitochondria | R | membrane bound vesicular structures formed by the process of packaging in the Golgi apparatus |
| D | Chloroplasts | S | Photophosphorylation |
| A | B | C | D | |
| 1. | P | R | S | Q |
| 2. | P | R | Q | S |
| 3. | R | P | S | Q |
| 4. | R | P | Q | S |
Subtopic: Eukaryotic Cell Orgenelle |
83%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Larger and more numerous nucleoli are present in cells actively carrying out lipid synthesis. |
| Statement II: | RER is frequently observed in the cells actively involved in protein synthesis and secretion. |
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Nucleus | Endomembrane System (Endoplasmic Reticulum) |
90%
From NCERT
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | All cells have a true nucleus. |
| II: | There is a cell membrane around all living cells. |
| III: | All cells have a cell wall. |
| IV: | The cell membrane controls what the cell will look like and how it behaves. |
| V: | The nucleus controls what passes into and out of a cell. |
1. 1
2. 2
3. 3
4. 4
Subtopic: Cell Organisation |
64%
From NCERT
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