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Q. No.In the ultrastructure of cilia/ flagella, the radial spokes connect one of the tubules of each peripheral doublet to:
1. the bridge of the central microtubules
2. another tubule to the doublet
3. the central sheath
4. dynein arms
1. the bridge of the central microtubules
2. another tubule to the doublet
3. the central sheath
4. dynein arms
Subtopic: Cilia & Flagella |
66%
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The space between the two nuclear membranes is called the perinuclear space and is continuous with the:
| 1. | Nuclear pore complex | 2. | Cytoplasm |
| 3. | RER lumen | 4. | Golgi lumen |
Subtopic: Intro to Endomembrane System: Endoplasmic Reticulum |
53%
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The functions of Smooth Endoplasmic Reticulum in human cells do not include:
1. Protein synthesis
2. Detoxification
3. Production of steroid hormones
4. Storage of calcium ions
Subtopic: Intro to Endomembrane System: Endoplasmic Reticulum |
65%
From NCERT
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In the given diagram, the plasma membrane, primary cell wall, secondary cell wall and the middle lamella are shown respectively by:
| 1. D, B, C and A | 2. D, C, B and A |
| 3. D, A, B and C | 4. A, B, C and D |
Subtopic: Cell Wall |
64%
From NCERT
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Mannans, Xylans, Alginic acid and sulfonated polysaccharides are seen in the cell walls of:
| 1. Algae | 2. Archaebacteria |
| 3. Fungi | 4. Plants |
Subtopic: Cell Wall |
80%
From NCERT
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Amyloplasts, leucoplasts and aleuroplasts are:
| 1. | Chromoplasts containing accessory photosynthetic pigments |
| 2. | Pro-plastids capable of developing into any types of plastids |
| 3. | Plastids found in green algae, photosynthesizing bacteria and protists |
| 4. | Types of leucoplasts that store nutrients |
Subtopic: Plastids |
62%
From NCERT
Please attempt this question first.
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Please attempt this question first.
Consider the given statements:
| Statement I: | Anton von Leeuwenhoek first saw and described a live cell and Robert Brown discovered nucleus. |
| Statement II: | The invention of electron microscope revealed all the structural details of the cell. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 4. | Only Statement II is correct |
Subtopic: Cell Theory |
62%
From NCERT
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Cell theory, as understood today, is:
| I: | All living organisms are composed of cells and products of cells |
| II: | Cells of living organisms may or may not have cell walls |
| III: | All cells arise from pre-existing cells |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Cell Theory |
66%
From NCERT
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A Prokaryotic cell lacks:
I: a membrane bound nucleus
II: membrane bound organelles
III: ribosomes
I: a membrane bound nucleus
II: membrane bound organelles
III: ribosomes
| 1. | Only I and II | 2. | Only I |
| 3. | Only II and III | 4. | Only III |
Subtopic: Prokaryotic Cell Organisation |
89%
From NCERT
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Ribosomes are:
| I: | bound by a single membrane only |
| II: | found in all cells – both eukaryotic as well as prokaryotic |
| III: | found in cytoplasm as well as chloroplasts, mitochondria and on RER |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Ribosome and Inclusion Bodies |
73%
From NCERT
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