Bio 141 Review (2/11/14) Flashcards
1
Q
Why does sucrose not spontaneously break down?
A
it requires some start up energy
2
Q
What allows sucrose to be broken down readily
A
effect of enzyme
3
Q
What kind of molecules is sucrase
A
catalyst
4
Q
What is it meant by enzyme regulation
A
on - activation
off - inhibition
5
Q
Why are enzymes regulated
A
don’t always need the energy
off - wait until you need it later
6
Q
What are the ways an enzyme can be regulated?
A
Inhibition
- allosteric - attaches somewhere other than the active site
- competitive inhibition - different molecule in the active site
Activation
- Allosteric
- Phosphorylation - add phosphate
