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A Healthy Diet

This worksheet will explain the importance of a healthy and balanced diet and will look into what can happen if this balance is disturbed.

Key stage:  KS 3

Curriculum topic:  Biology: Structure and Function of Living Organisms

Curriculum subtopic:  Nutrition and Digestion

Difficulty level:  

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QUESTION 1 of 10

Food is an essential part of life; needed for energy, building materials and to protect against diseases.   

Different foods provide our bodies with different things. The four basic groups are shown below:

 

 

  • Carbohydrates provide energy
  • Fat provides energy and warmth
  • Protein is needed for growth and repair
  • Water is needed to keep the body hydrated
  • Vitamins and nutrients are needed to fight diseases.

 

Health issues can arise when the diet contains too much of one group, or if there is not enough of a particular food type.  

 

 

 

So what about Vitamins and Nutrients?

 

 

 

So what is a balanced diet?

The balanced diet should include at least FIVE portions of fruit and vegetable a day, and a mix of the food groups shown above. The healthy value of total food intake, however, varies from person to person. The total amount of energy that a person requires per day depends on several factors including:

  • age – adults and growing teenagers normally require more energy than children
  • gender – men normally require more energy than women
  • body size – larger body size requires more energy
  • occupation and fitness – a more active lifestyle will require more energy

 

We will now answer some questions on the importance of a healthy diet.

Which of the following food groups are needed for growth and repair?

carbohydrates

protein

fats

water

Too much of which food group can result in hyperglycemia (high blood sugar)? 

carbohydrates

protein

fats

water

Which of the following can occur due to too much fat in the diet?

weight gain

anaemia

type two diabetes

scurvy

Scurvy is a disease that causes poor healing of wounds and bleeding gums. It occurs as a result of a deficiency of which vitamin?

Vitamin A

Vitamin B12

Vitamin C

Vitamin D

Hypoglycemia is also knows as......

high blood sugar

low blood sugar

Match up the correct food with the vitamin/nutrient it is rich in.

Column A

Column B

vitamin A
oranges
vitamin C
milk
iron
carrots
calcium
red meat

Which of the following will effect the energy intake needed for a healthy diet? 

age

birth date

gender

shoe size

occupation/lifestyle

body size/weight

Which of the following foods should you eat to avoid night-blindness?

milk

chocolate

peas

carrots

Which food group is needed in the diet to protect against diseases?

fats

protein

carbohydrates

water

vitamins/nutrients

Too much of which food groups can cause a build up of toxins in the body, leading to kidney problems?

fat

protein

carbohydrate

water

  • Question 1

Which of the following food groups are needed for growth and repair?

CORRECT ANSWER
protein
EDDIE SAYS
Protein is important in our diet, as it aids growth and repair in our bodies.
  • Question 2

Too much of which food group can result in hyperglycemia (high blood sugar)? 

CORRECT ANSWER
carbohydrates
EDDIE SAYS
Hyperglycemia is an excess of glucose in the blood stream, which can be caused by over-consumption of carbohydrates.
  • Question 3

Which of the following can occur due to too much fat in the diet?

CORRECT ANSWER
weight gain
type two diabetes
EDDIE SAYS
Eating too much fat can lead to weight gain. This then increases the risk of developing type two diabetes, which occurs when the body does not produce enough insulin to control the level of glucose in the blood stream.
  • Question 4

Scurvy is a disease that causes poor healing of wounds and bleeding gums. It occurs as a result of a deficiency of which vitamin?

CORRECT ANSWER
Vitamin C
EDDIE SAYS
Scurvy can develop due to a lack of vitamin C in the body. Vitamin C produces collagen, which is a type of protein found in different parts of the body (such as the skin). Without vitamin C, collagen cannot be replaced, which then leads to symptoms of scurvy (such as tiredness, red dots on the skin and bleeding gums).
  • Question 5

Hypoglycemia is also knows as......

CORRECT ANSWER
low blood sugar
EDDIE SAYS
HypOglycemia can develop as a result of low levels of glucose in the blood.
HypERclycemia can develop as a result of high levels of glucose in the blood.
  • Question 6

Match up the correct food with the vitamin/nutrient it is rich in.

CORRECT ANSWER

Column A

Column B

vitamin A
carrots
vitamin C
oranges
iron
red meat
calcium
milk
  • Question 7

Which of the following will effect the energy intake needed for a healthy diet? 

CORRECT ANSWER
age
gender
occupation/lifestyle
body size/weight
EDDIE SAYS
The factors that affect the energy intake needed are:
• age - adults and growing teenagers normally require more energy than children
• gender - men normally require more energy than women
• body size - larger body size requires more energy
• occupation and fitness - a more active lifestyle will require more energy
  • Question 8

Which of the following foods should you eat to avoid night-blindness?

CORRECT ANSWER
carrots
EDDIE SAYS
Carrots are high in vitamin A. A deficiency of vitamin A is known to cause night-blindness (nyctalopia).
  • Question 9

Which food group is needed in the diet to protect against diseases?

CORRECT ANSWER
vitamins/nutrients
EDDIE SAYS
Vitamins and nutrients are essential in our diet, as they help the body fight disease and protect itself against infection.
  • Question 10

Too much of which food groups can cause a build up of toxins in the body, leading to kidney problems?

CORRECT ANSWER
protein
EDDIE SAYS
Excessive consumption of protein can cause a build up of toxins, leading to kidney and heart problems.
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