Biology Nutrition 0.0 / 5 ? BiologyNutritionA2/A-levelWJEC Created by: pxnxCreated on: 16-05-19 16:47 what do photoautotrophic organisms do? use light energy,photosynthesis, holophytic 1 of 13 what do chemoautotrophic organisms do? use energy from chemical reactions,no longer life forms 2 of 13 what are saprotrophics? feed on dead+decaying matter, secrete enzymes on food outside the body 3 of 13 how do parasites get nutrition? they obtain nutriton from another living organism 4 of 13 what are the difference between endoparasites + ectoparasites? endo-live in the body of its host ecto-live on its surface 5 of 13 what are holozoics? they ingest, digest, and egest indegestible remains 6 of 13 what are the 3 methods of which small molecules enter the amoeba? diffusion,faciliated diffusion,active transport 7 of 13 what happens inside the food vacuole? fuse with lysosomes and food is digested by lysomal enzymes 8 of 13 why must food be digested? they are insoluble or big to cross membranes, polymers must be converted to monomers 9 of 13 what is the pathway of the human digestive system? mouth-oesophagus-stomach-duodenum-illeum-colon-rectum-anus 10 of 13 what is bile? made in liver--duodenum, no enzymes, neutralises acid, alkaline 11 of 13 what is the roles of oxynic cells? secretes HCL, lowers ph to 2,optimum so kills the most bacteria 12 of 13 how do you activate pesinogen? with the influence of h+ ions, turns to pepsin 13 of 13
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