Chapter 5: Enzymes

Question 1

Catalysts

Answer 1

Substance that speeds up chemical reaction, and does not get changed along the way
Reduces the need to increase temperature to speed up processes.

Question 2

Enzymes

Answer 2

Protein that functions as a biological catalyst
Speeds up metabolic reactions
Denature (active site deforms) at high temps, or low/high pH
Works best at optimum temp

Question 3

Enzymes for each substance

Answer 3

Starch: Amylase
Maltose: Maltase
Sucrose: Sucrase
Protein: Protease
Lipid: Lipase

Each enzyme has specific shape catered to shape of substance

Question 4

Mode of enzyme

Answer 4

'lock and key'
enzyme: lock
substrate: key
substrate binds to active to form enzyme-substrate
converts a product
product is released from active site

Question 5

Factors affecting enzymes rate of reaction

Answer 5

Temperature:
Low temp: inactive
Temperatures increasing up until optimum temp: increase rate
Increases more than optimum: Denatures and rate decreases.

pH:
Optimum pH, any other denatures enzyme