A colleague gives you two membrane fractions from a plant cell lysate.One contains the plasma membrane fraction,the other the mitochondrial fraction.The tubes are not labeled,but you run the samples anyway,looking at the macromolecule composition of the samples.You know for certain that the second sample contains the mitochondrial fraction simply because it contains insignificant amounts of
A)lipids.
B)protein.
C)specifically phospholipids.
D)carbohydrates.
E)both choices C and D

Question

Quizplus · Accepted Answer

Mitochondrial membranes have a low carbohydrate content compared to the plasma membrane, which often has glycoproteins and glycolipids.

A Colleague Gives You Two Membrane Fractions from a Plant