Enzymes/ Lock And Key

Question 1

They…

Answer 1

Are proteins. Lowers energy reaction (speeds up process). Reaction-specific. Can be denatured through heating.

Question 2

Lock and key

Answer 2

• an enzyme attaches to a substrate at the active site
• the substrate and enzyme combinations is known as the “enzyme-substrate complex
• the enzyme catalyses the chemical reaction by lowering the activation energy. The reaction occurs quicker.
• at end of reaction, enzymes would release products of the reaction and will move on to catalyse another reaction.

Question 3

Factors affection enzyme function

Answer 3

• temp. Optimum temp is 37. After 45, denatured.
• ph. + and - ions interfere with bonds. Causes attraction or repelling. Changes shape of active site.
• conc. Increase conc of enzyme or substrate= increased rate of reaction
• co factors and co enzymes. They change the shape of the active site, making it complementary to the substrate