Enzymes: Structure and Function. Mr. Mah Living Environment 11/30/09. Warm-Up Quiz. What are the two differences between Active Transport and Passive Transport? Active Transport is Low Concentration to High Concentration Active Transport required energy (ATP)
Enzymes are specialized proteins that regulate nearly every biochemical reaction in the cell.
“-ase” = enzyme
What does it mean to be specialized?
To be specialized is to have a specific job. My house key only opens the door to my apartment.
If enzymes are specialized, how many do you think we have in our bodies?
A lot! Thousands, actually! Think about how many keys are needed to open all the doors in an apartment complex.
Substrates are the starting materials of biochemical reactions.
Enzymes are catalysts: they speed up chemical reactions without being used up or altered (changed)
Without enzymes, biochemical reactions would occur too slowly to sustain life
The SHAPE!! Each enzyme must have a specific shape to work correctly.
Environmental conditions such as temperature and pH will change an enzyme’s shape and can either speed up or slow down its rate of function.
Enzymes stop working when conditions are not at optimal conditions!
Optimal: ideal or best
Need optimal temperatures and optimal pH