1. The number of protons in an atom is called:

2. The alkali metals belong to group:

3. The element with the highest electronegativity is:

4. The functional group in aldehydes is:

5. The mass of one mole of carbon-12 is:

6. The process of asexual reproduction in plants is:

7. The process by which plants convert nitrate into amino acids is:

8. The enzyme used to join DNA fragments is:

9. The process by which plants absorb CO? from atmosphere is:

10. The site of protein synthesis is:

11. The method of contraception that prevents ovulation is:

12. The process of translation involves:

13. The enzyme that digests proteins is:

14. The hormone that maintains pregnancy is:

15. The hormone that regulates sodium reabsorption in kidneys is:

16. The force on a charge in a magnetic field is:

17. The efficiency of a Carnot engine is maximum when:

18. Which wave has the highest frequency?

19. The phenomenon of beats is due to:

20. The unit of magnetic flux is: