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Q. No.Facilitated and active transport both show transport saturation because
1. Both undergo uphill transport
2. Both processes are conducted by transport protein
3. Both are regulated by hormones.
4. Both are highly specific.
Subtopic: Facilitated Diffusion |
69%
From NCERT
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Find the correct expression.
| 1. | \(\psi_{s}=\psi_{w}+\psi_{p}\) |
| 2. | Wall pressure + Turgor pressure = Osmotic pressure |
| 3. | Solute potential = Osmotic potential - Osmotic pressure |
| 4. | Wall pressure = Osmotic pressure + Osmotic potential |
Subtopic: Water Potential Concept |
From NCERT
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A transmembrane protein that moves two types of molecules in opposite direction without any need of ATP is a/an
1. Active transport
2. Passive symport
3. Active uniport
4. Passive antiport
1. Active transport
2. Passive symport
3. Active uniport
4. Passive antiport
Subtopic: Means of Transport: Passive |
71%
From NCERT
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Water potential of a solution at standard temperature and atmospheric pressure is
1. Zero pascals
2. Positive
3. Negative
4. Can't be determined
1. Zero pascals
2. Positive
3. Negative
4. Can't be determined
Subtopic: Water Potential Concept |
From NCERT
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When a flaccid plant cell is placed in pure water
| 1. | Water enters into the cell eventually rupturing it |
| 2. | Water enters into the cell and turgor pressure is developed |
| 3. | Water comes out of the cell making it plasmolysed |
| 4. | Net movement of water will be zero |
Subtopic: Plasmolysis |
55%
From NCERT
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A plant cell with \(\psi_{s}=-0.03\ MPa\) and \(\psi_{p}=-0.25\ MPa\) is placed in pure water at standard temperature and pressure. The net movement of water will be
1. into the cell
2. out of the cell
3. zero
4. first inside the cell and then out of the cell
1. into the cell
2. out of the cell
3. zero
4. first inside the cell and then out of the cell
Subtopic: Water Potential Concept |
52%
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Match the given columns and select the correct option
1. a-ii, b-i, c-iii, d-iv
2. a-ii, b-iv, c-iii, d-i
3. a-iii, b-i, c-iv, d-iv
4. a-iv, b-i, c-ii, d-iii
| (a) | Imbibition pressure | i. | Responsible for enlargement and extension growth of cell |
| (b) | Turgor pressure | ii. | Used by prehistoric man to split rocks and boulder |
| (c) | Mass or bulk inflow | iii. | Depends on pressure differences |
| (d) | Osmosis | iv. | Depends on both pressure and concentration gradient |
1. a-ii, b-i, c-iii, d-iv
2. a-ii, b-iv, c-iii, d-i
3. a-iii, b-i, c-iv, d-iv
4. a-iv, b-i, c-ii, d-iii
Subtopic: Imbibition |
76%
From NCERT
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Which of the following structures help in apoplast movement?
a. Intercellular spaces
b. Vessel
c. Tracheids
d. Plasmodesmata
e. Casparian strip
f. Companion cell
1. a only
2. All
3. a,b,c only
4. a,b,c and f only
a. Intercellular spaces
b. Vessel
c. Tracheids
d. Plasmodesmata
e. Casparian strip
f. Companion cell
1. a only
2. All
3. a,b,c only
4. a,b,c and f only
Subtopic: Water Absorption |
53%
From NCERT
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External solution is A if it is B concentrated that cytoplasm.
| A | B | |
| 1. | Hypotonic | Less |
| 2. | Hypertonic | More |
| 3. | Hypotonic | Equally |
| 4. | Hypertonic | Less |
Subtopic: Plasmolysis |
54%
From NCERT
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Small-sized proteins can pass through
1. Only pumps
2. Any gated channel
3. Porins
4. Lipid bilayer
1. Only pumps
2. Any gated channel
3. Porins
4. Lipid bilayer
Subtopic: Facilitated Diffusion |
72%
From NCERT
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