Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?

1. Inflammation of bronchioles; decreased respiratory surface
2. Increased number of bronchioles; increased respiratory surface
3. Increased respiratory surface; inflammation of bronchioles
4. Decreased respiratory surface; inflammation of bronchioles

Asthma may be attributed to

1. allergic reaction of the mast cells in the lungs
2. inflammation of the trachea
3. accumulation of fluid in the lungs
4. bacterial infection of the lungs

The figure given below shows a small part of the human lung where exchange of gases takes place. In which one of the options given below, the one part A, B, C or D is correctly identified along with its function?

   

Listed below are four respiratory capacities (1-4) and four jumbled respiratory volumes of a normal human adult 

Which one of the following is the correct matching of two capacities and volumes?

1. (a) 2500 mL, (d) 4500 mL

1. (c) 1200 mL, (a) 2500 mL

3. (b) 4500 mL, (c) 2500 mL

4. (d) 4500 mL, (b) 3500 mL

What is true about RBCs in humans?

1. they carry about 20-25 per cent of $C{O}_2$

2. They transport 99.5 per cent of $O_2$ 

3. They transport about 80 per cent oxygen only and the rest 20 per cent of it is transported in dissolved state in blood plasma

4. They do not carry $C{O}_2$ at all

An increase from pH 7.2 to pH 7.4 around hemoglobin causes:

1. hemoglobin to release all bound oxygen molecules.

2. an increase in the affinity of hemoglobin to bind oxygen molecules.

3. hemoglobin to denature.

4. an increase in the binding of H⁺ by hemoglobin.

Increased asthmatic attacks in certain seasons are related to:

1. hot and humid environment

2. eating fruits preserved in tin containers

3. inhalation of seasonal pollen

4. low temperature