Assuming you have a typical plasma membrane at room temperature, which of the following conditions would cause an increase in membrane fluidity?
Group of answer choices
1. Increasing the length of the fatty acid chain.
2. Increasing the degree of lipid saturation
3. Increasing the number of un-saturated bonds in glycerol.
4. Increasing the number of double bonds in the fatty acid chains
5. Decreasing the length of the fatty acid chain.
6. Decreasing the size of the phospholipid head group.
7. Adding additional cholesterol Decreasing the number of un-saturated bonds in glycerol.
8. Removing some of the membrane cholesterol
9. Decreasing the degree of lipid saturation
10. Lowering the room temperature
11. Increasing the size of the phospholipid head group.
The correct answer are options 3, 4, 5, 6, 9, 10.
Reason:- The factors which increases the membrane fluidity are:-
3. Increasing the number of unsaturated bonds in glycerol leads to an increase in double bonds which increases the membrane fluidity.
4. Increasing the number of double bonds in the fatty acid chains.
5. Decreasing the length of the fatty acid chain leads to an increase in the membrane fluidity.
6. Decreasing the size of the phospholipid head group increases the membrane fluidity.
9. Removing some of the membrane cholesterol increases the membrane fluidity.
10. Decreasing the degree of lipid saturation cause a decrease in the single bond chain length which increases the membrane fluidity.
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