8 Questions
What is the primary function of food molecules in living organisms?
To provide energy for respiration
Which type of nutrition do green plants use to supply themselves with organic molecules?
Autotrophic nutrition
What is the term for living organisms that cannot make their own food?
Heterotrophic
What is the result of a diet that lacks essential nutrients?
Malnutrition
Which of the following is NOT a macronutrient?
Vitamin
What is the term for the total amount of molecules or nutrients an organism needs?
Diet
Why is a balanced diet important?
To provide all necessary nutrients in correct proportions
What is the primary concern in conditions of undernutrition?
Supplying an adequate diet
Study Notes
Food and Nutrition
- All living organisms are made up of molecules that carry out the characteristics of life, and food provides them with raw materials for growth, development, and repair of body tissues.
- Food also supplies energy through molecules that can be oxidized in respiration.
Autotrophic and Heterotrophic Nutrition
- Autotrophic organisms, such as green plants, can make their own organic molecules through photosynthesis.
- Heterotrophic organisms, including humans and animals, cannot make their own food and rely on other organisms for their nutrient supply.
Importance of a Balanced Diet
- A balanced diet provides all the necessary nutrients in the correct proportions to carry out life processes.
- A diet that lacks essential nutrients can lead to malnutrition and its associated symptoms.
- Adequate provision of a balanced diet is crucial to avoid undernutrition and malnutrition.
Nutrients in a Balanced Diet
- Carbohydrates
- Proteins
- Fats
- Water
- Vitamins
- Minerals
- Fibre
Learn about the importance of food for living organisms, including providing raw materials for growth and development, energy, and enabling efficient use of resources.
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