Sources and functions of nutrients - SS2 Agriculture Lesson Note

Carbohydrates:

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.

Source:(stock.adobe.com)

 

 

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).

Source:(livestrong.com)

 

 

Minerals:

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).

Source:(draxe.com)

 

 

Vitamins:

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).

Source:(goodhousekeeping.com)

 

 

Water:

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.

Source:(gettyimages.com)

 

Proteins:

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.

Source:(stock.adobe.com)

 

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.