Podcast
Questions and Answers
What are the properties of catalysts?
What are the properties of catalysts?
Catalysts are mostly proteins and they are:-
- Efficient- work at body temperature in aqueous solution, near neutral pH. It can increase the rate of reaction by a factor of up to 1020.
- Specific- each enzyme has a limited range of substrates, some can distinguish stereoisomers
- Potent- each enzyme molecule can convert many substrate molecules into product per second
What is the mechanism of enzyme action?
What is the mechanism of enzyme action?
Enzymes speed up the rate at which a reaction reaches equilibrium 1) Bind and stabilize the transition state 2) Reduce activation energy by providing an alternative reaction pathway
What are isozymes?
What are isozymes?
Isoforms of enzymes - catalyze the same reaction but have different properties and structure
What are protein kinases?
What are protein kinases?
What are cofactors?
What are cofactors?
What are coenzymes?
What are coenzymes?
What are prosthetic groups?
What are prosthetic groups?
What is an apoenzyme?
What is an apoenzyme?
What is a holoenzyme?
What is a holoenzyme?
What does the substrate- enzyme complex involve?
What does the substrate- enzyme complex involve?
What is the lock and key model?
What is the lock and key model?
What is the induced fit model?
What is the induced fit model?
What effect does temperature and pH have on enzyme activity?
What effect does temperature and pH have on enzyme activity?