Food tests and digestion

Question 1

Name the chemical used to test for starch.

Answer 1

Iodine solution

Question 2

Name the chemical used to test for glucose (sugar).

Answer 2

Benedict’s reagent / solution

Question 3

Name the chemical used to test for protein.

Answer 3

Biuret reagent / solution

Question 4

Name the chemical used to test for fats (lipids).

Answer 4

Ethanol and water

Question 5

What colour change would be seen in a positive test for starch?

Answer 5

From orange/brown to blue/black

Question 6

What colour change would be seen in a positive test for protein?

Answer 6

From blue to purple

Question 7

What colour change would be seen in a positive test for fats (lipids)?

Answer 7

From clear to cloudy white

Question 8

What colour change would be seen in a positive test for glucose (sugar)?

Answer 8

From blue to brick red

Question 9

Name organs A-C

Answer 9

A stomach
B small intestine
C liver

Question 10

Name organs A-D

Answer 10

A salivary gland
B stomach
C pancreas
D small intestine

Question 11

Where is protein digested?

Answer 11

Stomach and small intestine

Question 12

Bile helps digestion.

Where is bile produced?

Answer 12

Stomach

Question 13

Where is starch digested?

Answer 13

Mouth and small intestine

Question 14

Where is amylase (the enzyme that break downs starch) produced?

Answer 14

Salivary glands, pancreas and small intestine

Question 15

Where is protease (the enzyme that break downs protein) produced?

Answer 15

Stomach, pancreas and small intestine

Question 16

Put the following biological structures in size order starting with the smallest:

tissue, organ, cell, organ system

Answer 16

cell → tissue → organ → organ system