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Questions and Answers
What is the primary function of food molecules in living organisms?
What is the primary function of food molecules in living organisms?
- To provide energy for respiration (correct)
- To regulate water balance
- To facilitate growth and development (correct)
- To maintain body temperature
Which type of nutrition do green plants use to supply themselves with organic molecules?
Which type of nutrition do green plants use to supply themselves with organic molecules?
- Heterotrophic nutrition
- Autotrophic nutrition (correct)
- Synthetic nutrition
- Oxidative nutrition
What is the term for living organisms that cannot make their own food?
What is the term for living organisms that cannot make their own food?
- Omnivorous
- Autotrophic
- Heterotrophic (correct)
- Carnivorous
What is the result of a diet that lacks essential nutrients?
What is the result of a diet that lacks essential nutrients?
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Which of the following is NOT a macronutrient?
Which of the following is NOT a macronutrient?
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What is the term for the total amount of molecules or nutrients an organism needs?
What is the term for the total amount of molecules or nutrients an organism needs?
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Why is a balanced diet important?
Why is a balanced diet important?
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What is the primary concern in conditions of undernutrition?
What is the primary concern in conditions of undernutrition?
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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
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