List two differences you would expect to see in the composition of lipids in the

Question

List two differences you would expect to see in the composition of lipids in the E. coli membrane when the cells are incubated at 25 (^circ { m C}) compared to incubation at 37 (^circ { m C}).

Please match the words (numbered) with the appropriate blanks (lettered).

1. Shorter fatty acids

2. Longer fatty acids

3. Trans

4. Cis

Membranes of cells grown at 25 degree celcius would have (i) __a__ with (ii) a greater number of __b__ -double bonds compared to the membranes of cellss grown at 37 degrees celcius

Explanation / Answer

The growth temperature increases with increase in molar ratio of saturated to unsaturated fatty acids.

Also, the decrease in temperature leads to increase in shorter and cis fatty acids

Membranes of cells grown at 25 degree celcius would have (i) shorter with (ii) a greater number of cis-double bonds compared to the membranes of cellss grown at 37 degrees celcius

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