Which type of substances would face difficulty in passing through the cell membrane?
 
1. Substances with hydrophobic moiety
2. Substances with hydrophilic moiety
3. All substances, irrespective of hydrophobic and hydrophilic moiety
4. Substances which are soluble in lipids
Subtopic:  Cell Membrane |
 56%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh

Select the correct statement from the following regarding cell membrane:

1. Na+ and K+ ions move across cell membranes by passive transport
2. Proteins make up 60% to 70% of the cell membrane
3. Lipids are arranged in a bilayer with polar heads towards the inner part
4. Fluid mosaic model of the cell membrane was proposed by Singer and Nicolson
Subtopic:  Cell Membrane |
 89%
From NCERT
AIPMT - 2012
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Which one of the following is not a constituent of the cell membrane?

1. Cholesterol

2. Glycolipids

3. Proline

4. Phospholipids

Subtopic:  Cell Membrane |
 86%
From NCERT
AIPMT - 2007
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The cell membranes are mainly composed of:

1. Phospholipids

2. Proteins

3. Fats

4. Carbohydrates

Subtopic:  Cell Membrane |
 81%
From NCERT
AIPMT - 2005
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In the fluid mosaic model of a plasma membrane:
 

1. Upper layer is non-polar and hydrophilic
2. The polar layer is hydrophobic
3. Phospholipids form a bimolecular layer in the middle part
4. Proteins form a middle layer
Subtopic:  Cell Membrane |
 61%
From NCERT
AIPMT - 2002
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh