Cell The Unit Of Life Question 88
Question: Correct sequence of layers of bacterial cell envelope is:
Options:
A) cell membrane $ \to $ glycocalyx $ \to $ cell wall
B) glycocalyx $ \to $ cell wall $ \to $ cell membrane
C) cell wall $ \to $ glycocalyx $ \to $ cell membrane
D) glycocalyx $ \to $ cell membrane $ \to $ cell wall
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Answer:
Correct Answer: B
Solution:
[b] Bacterial cell envelope consists of three components glycocalyx, cell wall and cell membrane.
Glycocalyx - It is the outermost mucilage layer of the cell envelope.
Cell Wall - It is rigid solid covering, which provides shape and structural support to the cell.
Cell wall lies between plasma membrane and glycocalyx.
Plasma/cell membrane - It is selectively permeable covering of the cytoplasm that forms the innermost component of cell envelope.
BETA
