Correct option:(2)Amino acids, glucose
Solution:
- Amino acids and glucose are included under the category of primary metabolites.
- They have identifiable functions and play known roles in normal physiological processes.
- Rubber, gums, morphine, codeine, vinblastin and curcumin are included under the category of secondary metabolites as their role or functions in host organisms is not known yet.
- So, many of them are useful to human welfare.