The Inner (Plasma) Membrane of E

question 32

Multiple Choice

The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight. How many molecules of membrane lipid are there for each molecule of protein? (Assume that the average protein is M_r 50,000 and the average lipid is 750.)

• A) 1
• B) 50
• C) 200
• D) 10,000
• E) 50,000

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Definitions:

Reactance

The opposition to current flow in an AC circuit offered by pure inductance or pure capacitance.

Inductance

The property of a conductor by which a change in current through it induces an electromotive force (EMF) in both the conductor itself and in any nearby conductors.

Henry

The unit of inductance in the International System of Units (SI), symbolized as H.

Parallel

A circuit configuration where components are connected across common points or junctions, allowing current to divide and flow through multiple paths.