Cell Wall Multiple Choice Questions(MCQs) and Answers
1 Plant cell wall is made up of
Answer: Cellulose, hemicelluloses and pectin
2 Middle lamella is made up of pectin. Pectin is chemically
Answer: Glucoronic and galacturonic acid
3 Which of the following statements are true regarding cellulose synthesis
Answer: All of these
4 Which of the following groups has cell wall
Answer: Bacteria, fungi and plants
5 What organism lacks cell wall?
6 The cell wall of diatoms composed of __________
Answer: Biogenic silica
7 Peptidoglycan layer is present in large quantity in?
Answer: Gram-positive bacteria
8 NAG and NAM of peptidoglycan layer is linked by _________
Answer: beta-(1,4) glycosidic linkage
9 Bayer’s junctions are sites which help in joining which of the following?
Answer: cytoplasmic membrane and outer membrane
10 Bacterial cell wall is made up of
Answer: N-acetyl glucosamine, N-acetyl muramic acid and amino acids
11 Chlorzinc Iodide is used to stain
12 Which component is present in the cell wall of fungi?
13 Which of the following antibiotics have their mode of action of inhibition of cell wall synthesis?
14 What is S- layer?
Answer: Surface layer
15 Which of the following bacteria lacks cell wall?
Answer: Mycoplasma pneumoniae
16 Which of the statements are incorrect regarding plant cell wall
Answer: Primary and secondary walls are present in meristamatic cells
17 Bacteria can be divided into classes namely gram-positive bacteria and gram-negative bacteria based on their cell wall.
18 Which of the following is a aromatic polymer of phenols
19 Which of the following statements are not true regarding cell wall
Answer: Cell was is semi-permeable
20 Chitinous cell wall is present in
Answer: Mitochondria without outer membrane
21 Pectin is stained using
Answer: Ruthenium red
22 Cellulose is a polymer of D-glucose units joined by
Answer: ? 1-4 linkage
23 Fine cytoplasmic connections between neighbouring cells through the cell wall for cell to cell communication is called
24 Which of the following organelle is involved in cell wall synthesis
Answer: Golgi apparatus
25 Secondary cell wall of plants is
Answer: SLocated inside the primary wall tarch
26 What is present in the cell wall of Mycobacterium tuberculosis?
Answer: Mycolic acid
27 Which of the following cell wall component can effectively defend against lysozyme?
28 Peptidoglycan is made up of __________
Answer: N-acetylglucosamine, N-acetylmuramic acid, amino acids
29 Teichoic acid present in Gram-positive bacteria can bind to which ion?
Answer: Mg ions
30 Cord factor is a ___________
Answer: teichoic acid derivative
31 The outer membrane of the Gram-negative cell wall is anchored to the underlying peptidoglycan by means of which of the following?
Answer: Braun’s Lipoprotein
32 Which among the following acts as receptors for bacteriophage attachment in Gram-negative bacteria?
Answer: O antigens
33 Porins are special proteins act as channels in the outer membrane of Gram-negative bacteria.
34 Gram-negative bacteria are more resistant to antibiotics due to the presence of?
Answer: Outer lipopolysaccharide layer
35 Which of the following are present in teichoic acids? a) ribitol residues b) glycerol residues c) glucose residues d) ribitol or glycerol residues View Answer Answer: d