Glycocalyx is the outermost layer or cell coat of many cells. It is made up of glycoproteins, glycolipids and proteoglycans. It is a network of polysaccharide chains of membrane proteins and lipids. It surrounds the vascular endothelial cells present on the lumen side. Glycocalyx is the outermost layer of bacterial cells that surrounds the cell wall. The composition and thickness of the glycocalyx layer differ in different bacteria. It forms the protective covering and is also involved in cell identification, signalling, association, etc.
1. A prokaryotic cell lacks
(a) plasma membrane
(b) nuclear envelope
(c) glycocalyx
(d) ribosome
Answer: (b)
2. Cell wall is absent in
(a) prokaryotes
(b) algae
(c) plants
(d) none of the above
Answer: (d)
3. The sticky feature of a bacterial cell is due to
(a) nuclear membrane
(b) cell wall
(c) glycocalyx
(d) plasma membrane
Answer: (c)
4. Bacterial cell membrane is made up of
(a) cellulose
(b) hemicellulose
(c) peptidoglycan
(d) none of the above
Answer: (c)
5. Glycocalyx consists of
(a) cellulose
(b) polysaccharide
(c) pectin
(d) peptidoglycan
Answer: (b)
6. Glycocalyx is
(a) a layer present between the cell wall and plasma membrane of bacteria
(b) a layer surrounding the cell wall of bacteria
(c) a peptidoglycan layer
(d) the cell wall of bacteria
Answer: (b)
7. The prokaryotic cell envelope is made up of
(a) cell wall
(b) plasma membrane
(c) glycocalyx
(d) all of the above
Answer: (d)
8. The cellular structure interconnecting animal cells is
(a) desmosomes
(b) cell wall
(c) plasmodesmata
(d) plasma membrane
Answer: (a)
9. The major component of a fungal cell wall is
(a) cellulose
(b) hemicellulose
(c) peptidoglycan
(d) chitin
Answer: (d)
10. The chain of ribosomes is called
(a) polyribosome
(b) multi ribosome
(c) nucleoid
(d) periplasm
Answer: (a)
These were some MCQs on Glycocalyx. Learn MCQs on related topics for NEET, at BYJU’S.
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