Specific Defense

Q.

Choose the appropriate pair of WBCs based on the defence action they perform.

Name	Defence action
A. Monocytes	i. Produce chemicals for inflammatory response
B. Basophil	ii. Engulfs and destroys germs
C. Eosinophil	iii. Stimulate other WBCs

1. A-ii, B-iii, C-i
2. A-i, B-iii, C-ii
3. A-ii, B-i, C-iii
4. A-iii, B-ii, C-i

Q.

The chemical substances which act against antigens are called __________ .

1. Antibiotics

2. Pathogen

3. Hormones

4. Antibodies

Q. Which of the following can be the reason(s) for leukocytosis?

1. Infection
2. Inflammation
3. Allergy
4. Leukemia

Q. Match the diseases with their organs affected.

1. Common cold
2. Hepatitis A
3. SARS
4. Lungs
5. Nose
6. Liver

Q. What is the largest integer number that a PLC counter function can reach if it uses a 16 bit register?

1. 65, 535
2. 65, 537
3. 65, 536
4. 32, 768

Q. A PLC Down - Counter (CTD) Counts

1. Scan transitions
2. Both a and b
3. False-to-True transitions
4. True-to-False transitions

Q. A PLC Up-Down-Counter Counts

1. Both a and b
2. True-to-False transitions
3. False-to-True transitions
4. Scan transitions

Q. A PLC Up - Counter (CTU) Counts

1. False-to-True transitions
2. Both a and b
3. Scan transitions
4. True-to-False transitions

Q. What is the largest integer number that a PLC counter function can reach if it uses a 16 bit register?

1. 65, 535
2. 65, 537
3. 65, 536
4. 32, 768