Opsonization

Q. Viruses are nucleic acid particles covered by a protein coat.

1. True
2. False

Q. Viruses are nucleic acid particles covered by a protein coat.

1. True
2. False

Q.

The marking of pathogens by coating them with antibodies is called

1. Opsonisation

2. Phagocytosis

3. Engulfment

4. Trapping

Q.

Match the following images with the respective given steps P, Q, R, S:
P. Macrophage receptors recognise the invading virus.
Q. The virus is drawn into the macrophage.
R. The virus get packaged into a sac pinched off from the cell membrane of the macrophage.
S. The sac fuses with lysozyme which safely dismantles the bacterium without digesting the macrophage itself.

1. I - P, II - R, III - Q, IV - S

2. I - Q, II - P, III - R, IV - S

3. I - S, II - P, III - Q, IV - R

4. I - R, II - P, III - Q, IV - S

Q.

The marking of pathogens by coating them with antibodies is called

1. Phagocytosis

2. Engulfment

3. Opsonisation

4. Trapping

Q.

Choose the correct labels for I, II and III from the options given below:

1. I - Opsonisation, II - Fc receptors, III - Phagocytosis

2. I - Antibodies, II - TCR, III - Opsonisation

3. I - Opsonisation, II - TCR, III - Endocytosis

4. I - Phagocytosis, II - Fc receptor, III - Opsonisation