Protein Chapter 9 + 10

Question 1

Enzyme

Answer 1

An enzyme is a biological catalyst that is made of protein

Question 2

Catalyst

Answer 2

A catalyst is a
substance that speeds up a reaction, without itself being used up in the reaction

Question 3

Substrate

Answer 3

A substrate is the substance on which an enzyme reacts.

Question 4

Product

Answer 4

The product is the substance(s) the enzyme forms. (Amylase + Starch = Maltose

Question 5

Description of Enzymes

Answer 5

Enzymes are large molecules reactions are reversible. are folded into a particular 3D shape.

Question 6

Anabolic enzymes

Answer 6

Anabolic enzymes convert simple molecules into a more complex form

Question 7

DNA Ligase

Answer 7

used in genetic engineering, joins two pieces of DNA together.

Question 8

DNA Polymerase

Answer 8

DNA Polymerase is an enzymes that repairs and forms DNA

Question 9

Why are Enzymes involved in Photosynthesis Anabolic

Answer 9

Because they convert carbon dioxide and water into glucose.

Question 10

Catabolic Enzymes

Answer 10

convert complex molecules into a simpler form

Question 11

Amylase

Answer 11

is an enzyme that converts starch into maltose. E.g.in mouth and seed germination.

Question 12

Catalase

Answer 12

Coverts H2O2 into H2O(l) + O2(g)

Question 13

pH

Answer 13

Enzyme activity depends on its shape, but the shape changes when the ph changes. If pH too high or too low then the enzyme changes shape(denatured)

Question 14

Temperature

Answer 14

• At low temperatures enzyme activity is reduced.
  An increase in temperature increases enzymes activity.
• Above a certain temperature, enzymes change their 3D shape
  as a result the rate of the reaction falls.