CBSE Class 11 Biology Sample Paper Set V

1. What will be the pO₂ and pCO₂ in the atmospheric air compared those in the alveolar air? 

   (i) pO₂ Lesser, pCO₂ higher (ii) pO₂ higher, pCO₂ lesser

   (iii) pO₂ higher, pCO₂ higher (iv) pO₂ lesser, pCO₂ lesser

2. What is substrate of salivary amylase? 

   (a) Maltose (b) Starch (c) Protein (d) Glucose

3. Gastric juice contains 

   (a) Pepsin,lipase and rennin (b) trypsin,lipase and rennin

   (c) trypsin, pepsin and lipase (d)trypsin,pepsin,and rennin.

4. What tissues separate the air of the alveoli and blood of pulmonary capillaries? 

5. Name the hormone which is known as anti-diuretic hormone. 

6. What is the role of carbonic anhydrase in human ? Where is it operative? 

7. How is CO₂ transported from the tissue to the lungs in our blood? 

8. What are the different types of hormones on the basis of their chemical nature.Give one example for each. 

9. Draw a neat labelled diagram of the transverse section of human gut. 

10. What are the main steps involves in human respiration. 

11.What are the major factors affecting the simple diffusion?

12. Differentiate between hyperglycemia and hypoglycemia. 

13. What are the major transport mechanisms for CO₂? Explain. 

14. Name the enzymes and their role in the digestion of polysaccharides and disaccharides in human alimentary canal. 

15. Give a diagrammatic representation of the mechanism of hormone(steroid hormone)action.

16. Explain the digestion of nucleic acid in human digestive system. 

17. Explain the mechanism of breathing in humans. 

18.

(i) Name the three layers of adrenal cortex.

(ii) What are corticoids?Explain their functions. 

19. Write a note on thyroid gland and their hormones. 

20. Explain any six major pituitary hormones and their functions. 

21. What are the major digestive glands associated with the human alimentary canal.Explain each.