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Enzymes and Digestion

Total questions: 13

Worksheet time: 19mins

Name
Class
Date
1.

Match the following

a)

Carbohydrates

1.

Releases energy in respiration

b)

Proteins

2.

Used for growth and repair of body cells

c)

Lipids

3.

Used to store energy and body insulation

2.

Reorder the following parts of the digestive system

a)

Mouth

b)

Oesophagus

c)

Stomach

d)

Small Intestine

e)

Large Intestine

1)
2)
3)
4)
5)
3.

Match the following

a)

Simple Sugars (Glucose)

1.

Benedict's Solution

b)

Starch

2.

Iodine Solution

c)

Lipids

3.

Ethanol (and water)

d)

Proteins

4.

Biuret Solution

4.

Match the following

a)

1.

Starch

b)

2.

Lipids

c)

3.

Proteins

d)

4.

Glucose

5.

Which food test requires heating after adding the reagent?

a)

Protein (Biuret)

b)

Lipids (Ethanol)

c)

Glucose (Benedict's)

d)

Iodine (Starch)

6.

Which molecule is the substrate?

7.

Which molecule is the enzyme?

8.

Which molecule is the enzyme-substrate complex?

9.

Which molecule is the product?

10.

Which molecule has an active site?

11.

Which section of the graph show the enzyme has denatured?

12.

Which section of the graph shows the enzyme's optimum temperature?

13.

Enzymes ​ (a)   the rate of a reaction because the ​ (b)   the activation energy needed. This means the reaction can happen at lower temperatures as ​ (c)   energy is needed.

Choose from the below words
increase
lower
less
decrease
higher
more