Question

5. a) Define nutrients name 4 important nutrients in our food
b) what are the various types of heterotrophic


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Answer 1

Nutrients are molecules in food that all organisms need to make energy, grow, develop, and reproduce.

There are two main types of nutrients, macronutrients and micronutrients.

1) Carbohydrates are a type of macronutrient used for quick energy in cells. The basic unit of carbohydrates is a monosaccharide. An example of a monosaccharide is glucose or sugar.
2)Proteins are a macronutrient that the cells in your body use for structure. Protein is very important for building tissues, such as muscle.
 
3)Fats are called lipids and are a macronutrient in your body that stores energy. Fats have long chains of carbon and hydrogen, which store lots of energy in the chemical bonds.

4)Vitamin C is necessary for the synthesis of collagen, which provides structure to blood vessels, bone and ligaments. Rich sources include citrus fruits, strawberries and peppers. Folate, found in foods, helps to prevent birth defects. 

(B)
Heterotrophic Nutrition: It is a mode of nutrition in which the organisms obtain readymade organic food from outside sources. The organisms that depend upon outside sources for obtaining organic nutritens are called heterotrophs.
Heterotrophic nutrition is of three types – saprophytic, parasitic and holozoic.