List of top Biology Questions on Exchange Of Gases asked in NEET (UG)

Under normal physical conditions in human beings every 100 ml oxygenated blood can deliver____ml of O₂ to the tissues.

Which of the following is not the function of the conducting part of the respiratory system?

The partial pressures (in mm Hg) of oxygen (O2 ) and carbon dioxide (CO2 ) at alveoli (the site of diffusion) are

Identify the wrong statement with reference to transport of oxygen

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due t o :

Which of the following is an occupational respiratory disorder ?

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of:

Asthma may be attributed to :

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs

Which one of the following is the correct statement for respiration in humans?

A large proportion of oxygen is left unused in the human blood even after its uptakes by the body tissues. This $O _{2}$ :

The majority of carbon dioxide produced by our body cells is transported to the lungs :

Which one of the following statements is incorrect?

Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of

Mast cells of connective tissue contain

When $CO_2$ concentration in blood increases breathing becomes

In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive

Given below are four matchings of an animal and its kind of respiratory organ:

1. Silver fish – trachea
2. Scorpion – book lung
3. Sea squirt – pharyngeal gills
4. Dolphin – skin

The correct matchings are:
 

Haemoglobin is a type of

Lungs are enclosed in :

When 1500 ml air is in the lungs, it is called

Although much $CO_2$ is carried in blood, yet blood does not become acidic, because

Oxygen dissociation curve of haemoglobin is