Tiêu đề Part 2 Nutrition in human.pdf ✅

It is the nutrition in which an organism depends on other living organisms for food
Steps involved in holozoic nutrition ⓵ Ingestion: Taking in complex organic food through mouth opening. ⓶ Digestion: Change of complex food into simple form by action of enzymes. ⓷ Absorption: Passing of simple, soluble nutrients through blood ⓸ Assimilation: Utilization of absorbed food for various metabolic processes. ⓹ Egestion: Expelling out the undigested food
Holozoic nutrition in single cell organism ⓵ Ingestion: Amoeba captures food using temporary finger- like extensions (Pseudopodia) of the cell surface. ⓶ Digestion: They fuse over the food particle forming a food- vacuole. In this, food breaks down into simpler ones with help of enzymes ⓷ Absorption: Nutrients of foods get diffused into cytoplasm and food vacuole disappears ⓸ Assimilation: Nutrient get utilised for further synthesis in a cell ⓹ Egestion: The undigested material is moved to cell surface and thrown out.
❑ Human alimentary canal is a long tube extending from the mouth to the anus ❑ It is the breakdown of complex food with the help of enzymes into smaller absorbable molecules. PARTS OF ALIMENTARY CANAL (1) Mouth (2) Buccal cavity (3) Oesophagus (4) Stomach (5) Small intestine (6) Large intestine (7) Anus Holozoic nutrition in HUMAN BEING