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CBSE - Class 11 Biology Breathing and Exchange of Gases Worksheet

Distinguish between (b) Inspiratory capacity and Expiratory capacity.

What happens to the respiratory process in a man going up a hill?

Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?

What is the site of gaseous exchange in an insect?

Define vital capacity. What is its significance?

What is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.

Explain the process of inspiration under normal conditions.

What will be the $pO_2$ and $pCO_2$ in the atmospheric air compared to those in the alveolar air ?

a. $pO_2$ lesser, $pCO_2$ higher b. $pO_2$ higher, $pCO_2$ lesser c. $pO_2$ higher, $pCO_2$ higher d. $pO_2$ lesser, $pCO_2$ lesser

Distinguish between (a) IRV and ERV

10.

Have you heard about hypoxia? Try to gather information about it, and discuss with your friends.

11.

State the volume of air remaining in the lungs after a normal breathing.

12.

Diffusion of gases occurs in the alveolar region only and not in the other parts of respiratory system. Why?

13.

What are the major transport mechanisms for $CO_2$? Explain.

14.

How is respiration regulated?

15.

Distinguish between (c) Vital capacity and Total lung capacity.

16.

What is the effect of $pCO_2$ on oxygen transport?

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