Biology Unit 2 - Adaptations for Nutrition Definitions 5.0 / 5 based on 1 rating ? BiologyHuman, animal and plant physiologyASWJEC Created by: Tasha.LCreated on: 02-05-16 17:51 Autotrophic Organisms that make their own food from two simple inorganic raw materials, carbon dioxide and water. 1 of 15 Photoautotrophic Organisms that use light as an energy source and perform photosynthesis. 2 of 15 Chemoautotrophic Organisms that use energy from chemical reactions, e.g. all prokaryotes. 3 of 15 Heterotrophic Organisms Organisms that cannot make their own food, so instead consume complex organic molecules produced by autotrophs. They are consumers. 4 of 15 Saprotrophic Nutrition Organisms derive energy and raw materials for growth from extracellular digestion of dead and decaying matter. 5 of 15 Parasitic Nutrition Organisms that obtain nutrients from other living organism, the host 6 of 15 Holozoic Nutrition The feeding method of most animals, involving ingestion, digestion, absorption and egestion. This occurs internally in a specialised digestive system. 7 of 15 Parasite An organism that lives and feeds off another organism, causing it harm. 8 of 15 Mechanical digestion The cutting and crushing of food by teeth or the muscle contractions of the gut wall. 9 of 15 Chemical Digestion The secretion of digestive enzymes, such as bile and stomach acid, to digest food. 10 of 15 Serosa Tough connective tissue protecting the gut wall. It reduces friction with abdominal organs. 11 of 15 Endopeptidases Peptidases that hydrolyse the bonds within a protein molecule. 12 of 15 Exopeptidases Peptidases that hydrolyse the bonds at the ends of polypeptides. 13 of 15 Ruminant A cud-chewing herbivore with mutualistic microbes in its rumen. 14 of 15 Mutualism The strong association between two different members of different species, where both benefit. 15 of 15
Comments
No comments have yet been made