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 which can inhibit phagocytosis, what is the correct sequence of structures penetrated by B. bacteriophorus on its way to the prey's cytoplasm? 1. membrane composed mostly of lipopolysaccharide 2. membrane composed mostly of phospholipids 3. peptidoglycan 4. capsule A) 4? 3? 1? 2 B) 1? 4? 3? 2 C) 2? 4? 3?1 D) 4? 1? 3? 2 E) 1? 3? 4? 2

Question

Adele

Biology

27 September, 12:57

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 which can inhibit phagocytosis, what is the correct sequence of structures penetrated by B. bacteriophorus on its way to the prey's cytoplasm? 1. membrane composed mostly of lipopolysaccharide 2. membrane composed mostly of phospholipids 3. peptidoglycan 4. capsule A) 4? 3? 1? 2 B) 1? 4? 3? 2 C) 2? 4? 3?1 D) 4? 1? 3? 2 E) 1? 3? 4? 2

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Answers (1)

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Rose Daniel · Answer 1

D) 4,1,3,2

Explanation:

Once past the capsule, the next membrane is composed of lipopolysaccharides. Then comes the peptidoglycan cell wall. Finally, the inner membrane is composed of a phospholipid bilayer.