Courses » SS2 » SS2 Agriculture » Sources and functions of nutrients - SS2 Agriculture Lesson Note

Sources and functions of nutrients - SS2 Agriculture Lesson Note


Definition: Carbohydrates are macronutrients composed of sugars, starches, and fibers.

Sources: They are found in foods like grains, fruits, vegetables, and legumes.

Functions: Carbohydrates serve as the primary source of energy for the body. Glucose, a carbohydrate, fuels cellular activities.




Fats (Lipids):

Definition: Fats are energy-dense macronutrients composed of triglycerides.

Sources: Sources include oils, butter, nuts, and fatty fish.

Functions: Fats provide energy, cushion organs, insulate the body, and are essential for the absorption of fat-soluble vitamins (A, D, E, K).





Definition: Minerals are inorganic nutrients necessary for various physiological functions.

Sources: Minerals are found in foods like dairy (calcium), red meat (iron), and leafy greens (magnesium).

Functions: Minerals are involved in bone health (calcium), oxygen transport (iron), and nerve function (sodium, potassium).





Definition: Vitamins are organic compounds essential for various metabolic processes.

Sources: Fruits, vegetables, and animal products are rich sources of vitamins.

Functions: Vitamins have diverse roles, such as maintaining vision (vitamin A), boosting immune function (vitamin C), and supporting blood clotting (vitamin K).





Definition: Water is a vital, inorganic nutrient that makes up a significant portion of the body.

Sources: It can be obtained through drinking water and consuming water-rich foods.

Functions: Water is essential for digestion, transportation of nutrients, temperature regulation, and overall bodily functions.




Definition: Proteins are macronutrients made up of amino acids.

Sources: Protein sources include meat, dairy, beans, and nuts.

Functions: Proteins are the building blocks of tissues and enzymes, play a role in immune function, and can serve as an energy source when needed.



In summary, nutrition is the process of obtaining and utilizing essential nutrients from food for the body's well-being.

Nutrients like carbohydrates, fats, minerals, vitamins, water, and proteins have distinct roles in providing energy, supporting bodily functions, and maintaining overall health. A balanced diet that includes a variety of nutrient sources is crucial for optimal nutrition and well-being.

Recommended: Questions and Answers on Animal Nutrition for SS2 Agriculture
Please share this, thanks:

Add a Comment

Notice: Posting irresponsibily can get your account banned!

No responses