Food

Question 1

Name a carbohydrate found in the cell wall of plant cells

Answer 1

Cellulose

Question 2

2 functions of water in a living organism

Answer 2

1. Good solvent

2. Good body heat regulator

Question 3

How do fats differ from oils at room temperature

Answer 3

1. Fats are solid

2. Oils are liquid

Question 4

Name a fat-soluble vitamin, source and deficiency?

Answer 4

1. Vitamin D
2. Sun
3. Rickets

Question 5

Name a water-soluble vitamin, the source and deficiency?

Answer 5

1. Vitamin C
2. Oranges
3. Scurvy

Question 6

Trace elements

Answer 6

iron, copper and zinc

Question 7

Two minerals required by human body and their function

Answer 7

1. Calcium- formation of bones and teeth

2. Iron- forms structure of haemoglobin

Question 8

Name the test for reducing sugar

Answer 8

Benedict’s test

Question 9

Name a structural carbohydrate

Answer 9

cellulose

Question 10

Name a chemical always found in proteins but not in carbohydrates

Answer 10

sulfur

Question 11

Name a test for protein

Answer 11

Biuret’s test

Question 12

Small molecules joined to make a protein are called

Answer 12

amino acids

Question 13

what is triglyceride?

Answer 13

Glycerol and 3 fatty acids

Question 14

For which food type did you use brown paper?

Answer 14

Test for fats

Question 15

What colour indicates positive result for reducing sugar?

Answer 15

red

Question 16

What colour indicates positive result for protein?

Answer 16

Lilac

Question 17

What colour indicates positive result for starch?

Answer 17

blue black

Question 18

What colour indicates positive result for Lipids?

Answer 18

translucent stain

Question 19

one way in which carbohydrates differ from fats

Answer 19

1. Carbohydrates are used for metabolic purposes whereas fats help absorb vitamins

Question 20

Name an important group of biomolecules that plants make from nitrates

Answer 20

proteins