Proteins

Question 1

Essential amino acids

Answer 1

• Leucine
• Isoleucine
• Lysine

Question 2

Non essential amino acids

Answer 2

• Alanine
• Arginine
• Glutamic acid
• Glutamine

Question 3

High biological value proteins

Answer 3

Supplies the body with all the essential amino acids in the right amounts

Question 4

Low biological value proteins

Answer 4

Lacks 1 or more essential amino acids that is required by the body

Question 5

Complementary proteins & examples

Answer 5

Formed by combining 2 or more low biological value proteins such that the body obtains all the essential amino acids for various body functions

• baked beans & bread
• Dhal & rice
• peanut & sesame brittle

Question 6

Food sources of proteins

Answer 6

• chickpeas (pulse)
• Cashew (nuts&seeds)
• Quinoa (grain)
• chicken (meat)
• duck egg (egg)
• cheese (dairy)
• prawn (seafood)

Question 7

Functions of proteins

Answer 7

• growth & repair
• providing structure
• transportation of nutrients, wastes & gases
• formation of enzymes
• immunity
• energy reserve
• body movement

Question 8

Growth & repair (protein)

Answer 8

Proteins are important to support growth & maintain good health. Proteins are also need for the body to repair & replace worn out cells & tissues

Question 9

Providing structure (protein)

Answer 9

Proteins (Eg; collagen) are important components in the skin, nails, ligaments, muscles, tendons & other tissues. They provide structure & internal support to the human body & organs

Question 10

Transportation of nutrients, wastes & gases

Answer 10

Proteins help transport gases, nutrients & wastes from 1 tissue to another in the body (Eg; haemoglobin)

Question 11

Formation of enzymes (protein)

Answer 11

Enzymes are made of proteins and they are involved in chemical reactions in the body. (Eg; digestive enzymes)

Question 12

Immunity (protein)

Answer 12

Proteins are needed to support a strong immune system. Proteins in the form of antibodies protect the body against attacks by harmful microorganisms & foreign substances. An insufficient intake or protein weakens the body, causing one to fall sick easily

Question 13

Energy reserve (protein)

Answer 13

Proteins act as an energy reserve hence there is an insufficient intake of carbohydrates and fats from the diet. As a result, the body lacks proteins to perform other important tasks, such as building muscles, fighting diseases & regulating body processes

Question 14

Body movement (protein)

Answer 14

Proteins make up a huge portion of the muscles in the body. All body movements are enabled through muscle contraction