human nutriton Flashcards
what is nutrition?
Nutrition is the process by witch living organisms obtain or make food.
what are the two types of nutrition?
The two types are autotrophic and heterotrophic.
What is autotrophic nutrition?
It is the nutrition that occurs in in green plant and some bacteria. Autotrophs turn simple inorganic compounds e.g. Carbon Dioxide, water and mineral into complex organic food substances such as Carbohydrates, Proteins Lipids and Vitamins. Needs a source of energy. eg Photosynthesis
what is heterotrophic nutrition?
It is the nutrition that occurs in animals, fungi and most bacteria. Heterotrophs obtain ready made organic food from their environment.
what are the types of heterotrophic nutrition?
The Three types are holozoic, saprophytic and parasitic nutrition.
what is Holozoic Nutrition?
It occurs in most animals. it is when living organisms consumes another living organism. The organic complex food is ingested and then broken down (digested) into simpler organic substances.
What is saprophytic Nutrition?
It occurs in fungi and most bacteria. It is when organism (saprophytic) obtains organic food from the dead remains of another living organism. They digest the complex organic substances outside their bodies and then absorb the simpler organic substances.
what is parasitic Nutrition?
It occurs in some plants, animals, fungi and bacteria. The organism (parasite) obtain their food from the body of another living organism called the host . Host is usually harmed.
