Q1. Explain why it is essential that metabolism be regulated and indicate how it is regulated, give examples. Reply must include a discussion of the characteristics of enzymes and their importance in biological systems and name one enzyme that is regulated (not affected) by pH.

Describe how ATP is synthesized from glucose under aerobic and anaerobic conditions.

Q2. DNAase is an enzyme that catalyzes the hydrolysis of covalent bonds that join nucleotides together. What will first happen to DNA molecules treated with DNAase?