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