Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 4. The 6. The 9. 19. Summing up respiration light oxygen Energy
Document related concepts
no text concepts found
Transcript
Chapter 8: The energy of life Summing up Science Quest 3: Glossary pages 254–61 Student: ........................................................................................................................................................ Class: . ........................................................................... Complete the statements below to compile a summary of this unit. The missing words can be found in the word list below. Two of the words may be used twice. 1. The chemical reaction that makes energy available to living organisms is respiration . light 2. Some organisms, including plants, are able to capture visible energy and convert it to stored chemical energy. oxygen Energy 3. Aerobic respiration requires glucose and . is released while water carbon dioxide and are produced. oxygen 4. The molecule is not involved in anaerobic respiration. less 5. Anaerobic respiration releases energy than aerobic respiration. mitochondria 6. The are the organelles within cells where respiration takes place. 7. In a human body chemical energy is transformed into kinetic energy, sound energy and new chemical forms of energy. more 8. When a person’s energy intake is than the amount of energy used, energy is stored in the form of fat and glycogen molecules, and weight is gained. 9. Fermentation is an anaerobic reaction that produces alcohol. carbon dioxide 10. Plants are able to make food from two simple molecules, water and , using light energy in the presence of chlorophyll . The process is called photosynthesis . 11. Photosynthesis occurs in the chloroplasts , which are located in the cytoplasm of plant cells. sun 12. The energy in our food originally came from the . glucose 13. As well as producing oxygen, photosynthesis also produces the molecule. 14. Once energy has passed through the food web, it is transformed into thermal energy which heats the environment and radiates out into space. recycled 15. Atoms are continuously through living organisms and the non-living environment. fats 16. Carbon is found in carbohydrates, proteins and in food. proteins 17. Nitrogen is essential to all forms of life because it is used to make . bacteria 18. Nitrogen-fixing are the only forms of life that can put nitrogen in a form that plants, and thus animals, can use. 19. Decomposers are the organisms which are responsible for converting dead material into a form which can be absorbed by plant life and remade into food. 20. Photosynthesis and respiration link the journey of energy through the ecosystem . decomposers mitochondria recycled oxygen ecosystem chloroplasts bacteria © John Wiley & Sons Australia, Ltd 2009 sun carbon dioxide respiration fats heats water photosynthesis proteins more chemical glucose chlorophyll fermentation less energy light oxygen water Science Quest 3 Student Workbook 93
