Breathing and Exchange of Gases Questions

Which one of the following are analogous structures?

A scrubber in the exhaust of a chemical industrial plant removes

Reduction in respiratory surface of the lungs due to break down of partition in the alveoli is known as

Adult human RBCs are enucleate. Which of the following statement (s) is / are not most appropriate explanation for this feature? (a) They do not need to reproduce (b) They are somatic cells (c) They d...

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

Which one of the following characteristics is not shared by birds and mammals?

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

Match the items given Column I with those in Column II and select the correct option given below : Column I Column II a. Tidal volume i. 2500-3000 mL b. Inspiratory Reserve ii. 1100-1200 mL volume c. ...

The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification andmain function and/or characteristic :-...

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

Which one of the following pair of gases are the major cause of green house effect ?

The figure given below shows a small part of human lung where exchange of gas takeplace. In which one of the options given below, the one part A, B, C or D is correctlyidentified along with its functi...

Which of the following is correctly states as it happens in the common cockroach ?

Which two of the following changes (1 - 4) usually tends to occur in the plain dwellers when the move to high altitudes (3,500 m or more ) ? (1) Increase in red blood cell size (2) Increase in red blo...

The two gases making highest relative contribution to the greenhouse gases are

Skin is an accessory organ of respiration in

The alveolar epithelium in the lung is

Carbon dioxide is transported from tissues to respiratory surface by only

Air is breathed through

Oxygen dissociation curve of haemoglobin is