The predatory bacterium Bdellovibrio bacteriophorus drills into a prey bacterium and, once inside, digests it. In an attack upon a gram-negative bacterium that has a slimy cell covering, what is the correct sequence of structures penetrated by B. bacteriophorus on its way to the prey's cytoplasm?
A) phospholipid membrane, capsule, peptidoglycan, lipopolysaccharide membrane
B) lipopolysaccharide membrane, peptidoglycan, capsule, phospholipid membrane
C) lipopolysaccharide membrane, capsule, peptidoglycan, phospholipid membrane
D) capsule, lipopolysaccharide membrane, peptidoglycan, phospholipid membrane

Question

Quizplus · Accepted Answer

Bdellovibrio bacteriophorus first penetrates the capsule, then the outer lipopolysaccharide membrane, followed by the peptidoglycan layer, and finally the inner phospholipid membrane to reach the cytoplasm of a gram-negative bacterium.

The Predatory Bacterium Bdellovibrio Bacteriophorus Drills into a Prey Bacterium