Molecules moves across a membrane independent of other molecules, by the means of membrane protein, the process is called 

  1. Biport 
  2. Symport 
  3. Uniport 
  4. Antiport 
Subtopic:  Means of Transport: Passive |
 85%
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Substances which are soluble in lipids…….a…...But which have a hydrophilic moiety……..b……

1. a- move slowly

2. a- move similarly as that of others

3. b- move faster

4. a- move faster

Subtopic:  Means of Transport: Passive |
 78%
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Identify the incorrect match 

Property Simple 
Diffusion
Facilitated
Transport
Active 
Transport
a. Requires special membrane proteins No Yes Yes
b. Highly selective No Yes Yes
c. Transport saturates No No Yes
d. Uphill transport No Yes Yes
e. Requires ATP energy No No Yes

1. c & d

2. a, c, & d

3. c, d & e

4. b, c & d

Subtopic:  Means of Transport: Active | Means of Transport: Passive |
 81%
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Facilitated transport differs from active transport as the former

1.  Transports saturates.

2.  Response to protein inhibitors.

3.  Requires special membrane proteins.

4.  Shows downhill transport.

Subtopic:  Means of Transport: Active | Means of Transport: Passive |
 79%
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What is correct about the movement of substances across the membrane in facilitated diffusion?

1. It is an active transport.

2. It causes the transport of molecules from low concentration to high concentration.

3. It is insensitive to inhibitors.

4. It is a very specific transport.

Subtopic:  Means of Transport: Passive |
 75%
From NCERT
AIIMS - 2010
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How many of the following statements are correct?
(i) In plants each organ receiving some substances & giving out some others.
(ii) Water channels are made up of eight different types of aquaporins.
(iii) Water is often a limiting factor for plant growth & productivity in both agricultural & Natural environments.
(iv) Imbibition is also diffusion.

Options:
1. All the above
2. (i), (ii) & (iv)
3. (ii), (iii) & (iv)
4. (iii) & (iv)

Subtopic:  Imbibition | Means of Transport: Passive |
 71%
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Which one of the following is incorrect regarding faciliated diffusion :-

(1) Selective nature

(2) Dependent on energy

(3) Transport Saturation

(4) Requirement of protein

Subtopic:  Means of Transport: Passive |
 90%
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