Enzymes and Bioenergetics — Chapter Summary

Enzymes catalyse biochemical reactions both

Enzymes catalyse biochemical reactions both in vivo and in vitro. They have great catalytic power and are highly specific for substrates. Their molecu

All enzymes are proteins except

All enzymes are proteins except a small group of catalytic RNA molecules called ribozymes.

Many enzymes need cofactors for activity

Many enzymes need cofactors for activity. A cofactor may be a coenzyme or a metal ion. The protein part alone is the apoenzyme, and the complete activ

Enzymes are classified into seven classes

Enzymes are classified into seven classes based on the reaction they catalyse: oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases,

Isozymes are multiple molecular forms

Isozymes are multiple molecular forms of the same enzyme present in the same species, tissue, or cell. They catalyse the same reaction but may differ