NUTRITION The acquiring of the raw materials needed to build the organism and provide energy

Autotrophs Fats Pancreas Photosynthesis Protein Duodenum Chemosynthesis Vitamins Ileum Leaves Minerals Caecum Light stage Water Appendix Dark stage Enzymes Colon Chloroplasts Deficiency diseases Rectum Chlorophyll Vegetarianism Anus Oxygen Vegan Saphrotrophs Carbon Dioxide Balanced Diet Decomposition Sunlight Gender and nutrition Bacteria Heterotrophs Age and nutrition Fungi Ingestion Occupation and nutrition Detrivores Digestion Illness and nutrition Absorption Alimentary canal Assimilation Mouth Egestion Teeth Macronutrients Oesophagus Micronutrients Stomach Carbohydrates Liver

Autotrophs to obtain nutrition by organisms making their own food Photosynthesis the process of using energy from the sun to make organic food using inorganic materials, e.g., plants and many microbes Chemosynthesis making food using simple inorganic substances (ammonia) Heterotrophs cannot make their own food so they consume other organisms for nutrition Food pass through a digestive tract and undergo five basic processes (ingestion, digestion, absorption, assimilation and egestion) Enzymes speed up all chemical reactions and processes Saphrotrophs consume other organisms for nutrition except they begin to digest food outside the body then ingest partially or completely digested food. Examples decomposers (bacteria and fungi), flies and spiders

Leaves the organ of photosynthesis for plants Chloroplast a plant cell organelle were photosynthesis occurs Chlorophyll a common green pigment that found in the chloroplast that is able to trap/absorb sunlight energy Light stage the stage during photosynthesis when light energy is absorbed and used to split water molecules into hydrogen ions and oxygen molecules Dark stage the stage in photosynthesis when high energy hydrogen reacts with carbon dioxide to produce glucose Carbon dioxide an inorganic molecule that can be converted by photo – autotrophes into organic nutrients

Photosynthesis The process by which plants make their own food from raw materials using energy from the sun Carbon Dioxide +water Sunlight and chlorophyll glucose +oxygen 6CO2 +6H2O Sunlight and chlorophyll C6H12 O6 + 6O2 The carbon dioxide is absorbed through stomata in the leaves The water is obtained through roots from the soil Chlorophyll is the green pigment found in the chloroplasts of leaves Glucose is a starter food that can be converted to any substance the plant needs example glucose can be converted to: sucrose sugar for transport or in fruits Starch for storage e.g.cassava Proteins with the addition of absorbed soil nitrates e.g. peas Fats for storage in seeds Oxygen is released into the atmosphere and used in respiration

Photosynthesis is divided into two stages Light reaction Dark reaction During the light reaction chlorophyll in leaves use absorbed sunlight to split the water molecule H2O into Hydrogen and Oxygen. This process is called the evolution of oxygen. Waste O2 is released via the stomata. {sunlight energy + 2H2O = 2H+ + O2 gas} During the dark reaction the high energy hydrogen ions combine with carbon dioxide to form glucose. (This process is called reduction of carbon dioxide) {H+ + CO2 = C6H12O6 glucose}