Multiple Choice Questions on Cell wall

1. Which of the following groups has cell wall

a) Bacteria, plant and animals
b) Bacteria, fungi and plants
c) Bacteria, fungi, plants and animals
d) Bacteria and plants only

2. Bacterial cell wall is made up of

a) N-acetyl glucosamine
b) N-acetyl muramic acid
c) Both a and b
d) N-acetyl glucosamine, N-acetyl muramic acid and amino acids

3. Which of the following statements are  not true regarding cell wall

a) Plant cell wall is made up of cellulose
b) Plant cell wall is a non-living structure
c) Cell wall provides mechanical support to the cell

d) Cell was is semi-permeable

4. Plant cell wall is made up of

a) Cellulose, hemicelluloses and pectin
b) Cellulose and chitin
c) Cellulose, hemicelluloses and chitin
d) Cellulose only

5. Chitinous cell wall is present in

a) Plants
b) Bacteria
c) Protists
d) Fungi

6. Pectin is stained using

a) Sudan III
b) acetocrmine
c) Ruthenium red
d) Iodine

7. Cellulose is a polymer of D-glucose units joined by

a) α 1-4 linkage
b) α 1-6 linkage
c) β 1-4 linkage
d) β 1-6 linkage

8. Chlorzinc Iodide is used to stain

a) Cellulose
b) Hemicellulose
c) Pectin
d) Lignin

9. Middle lamella is made up of pectin. Pectin is chemically

a) N-acetyl glucosamine and N-acetyl muramic acid
b) Heteropolymer of xylose, mannose and arabinose
c) Glucoronic and galacturonic acid
d) Polymer of D-glucose units

10. Which of the following is a aromatic polymer of phenols

a) Pectin
b) Chitin
c) Lignin
d) Cutin

11. Fine cytoplasmic connections between neighbouring cells through the cell wall for cell to cell communication is called

a) Plasmosome
b) Plasmodesmata
c) Mesosome
d) All of these

12. Which of the following organelle is involved in cell wall synthesis

a) Mitochondria
b) Chloroplast
c) Golgi apparatus
d) lysosome

13. Which of the following statements are true regarding cellulose synthesis

a) Cellulose is synthesized on the external surface of the cell
b) The enzyme involved is a plasma membrane bound complex called cellulose synthetase
c) UDP glucose is the precursor of cellulose
d) All of these

14. Secondary cell wall of plants is

a) Located outside the primary wall
b) Located inside the plasma membrane
c) Located inside the primary wall
d) Located just beneath middle lamellae

15. Which of the statements are incorrect regarding plant cell wall

a) Primary and secondary walls are present in meristamatic cells
b) Secondary cell wall consists of three concentric layers (S1, S2 and S3) one after the other
c) In certain plants, tertiary cell wall is also present which has xylan beside cellulose
d) Middle lamella is made up of pectin and lignin

Answers:

1. b) Bacteria, fungi and plants
2. d) N-acetyl glucosamine, N-acetyl muramic acid and amino acids
3. d) Cell was is semi-permeable
4. a) Cellulose, hemicelluloses and pectin
5. d) Fungi
6. c) Ruthenium red
7. c) β 1-4 linkage
8. a) Cellulose
9. c) Glucoronic and galacturonic acid
10. c) Lignin
11. b) Plasmodesmata
12. c) Golgi apparatus
13. d) All of these
14. c) Located inside the primary wall
15. a) Primary and secondary walls are present in meristamatic cells