Topic 2.5 Enzymes

Question 1

A change in a protein causes the loss of its biological process by altering the three-dimensional shape.

Answer 1

Denaturation

Question 2

When substrates collide with and bind to the active site.

Answer 2

Enzyme Activity

Question 3

Proteins that catalyze chemical reactions through the use of substrate collisions to create products.

Answer 3

Enzymes

Question 4

Disaccharide broken down into glucose and galactose using the enzyme lactase and often introduced to dairy products

Answer 4

Lactose

Question 5

1. Decrease lactose for intolerant people
2. Less sugar needs to be added
3. Bacteria ferment glucose and galactose quicker

Answer 5

Advantages of Lactose-free milk

Question 6

Enzymes are substrate-specific and can only _________.

Answer 6

catalyze one type of reaction

Question 7

A positive increase causes particles to move faster increasing the likelihood of a collision, but when the increase passes the ___________, denaturation occurs.

Answer 7

Optimum Enzyme temperature

Question 8

Enzymes have an _____ where the activity is best and outside of this, the activity decreases and would stop due to denaturation.

Answer 8

Optimum Enzyme pH

Question 9

• Can be separated from substrates to stop a reaction.
• Products can be separated in order to prevent contamination.
• The enzyme can be removed/reused.
• Increase stability.
• Substrates can be exposed to higher concentrations of enzymes.

Answer 9

Uses of Immobilized Enzymes