an organism that converts light energy into usable energy?
Phototrophic organisms convert light energy into chemical energy in the form of ATP. Photosynthetic organisms (photoautotrophs) also use light energy to make both ATP and reduced electron carriers (NADH or NADPH), which are both required to reduce carbon dioxide (CO2) to carbohydrate (CH2O). Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organisms' activities. The role of NADPH in oxygen-producing photosynthesis is to ____. a) supply hydrogen to the carbohydrate; b) supply carbon to the carbohydrate; c) supply energy that can be used to form a carbohydrate; d) transfer oxygens from the third phosphate group to the carbohydrate molecule; e) convert RuBP into PGA. 29. Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the fuel used by all living things. Within this layer are structures called chloroplasts. With … in the chloroplasts are molecules called reaction centers, which contain the only type of molecules that can convert light energy into chemical energy. The process of converting light energy into chemical energy (ATP) is called photophosphorylation. Both plants and animals have enzymes to change chemical bonds, but only plants (and some simple organisms) have the ability convert solar energy into chemical energy on their own. Plants use solar energy to combine carbon dioxide and water into ATP and carbohydrates. Electrons from H2S flow to the oxidized reaction-center chlorophyll via an electron transport chain, which generates a proton gradient to make ATP. Thus green-sulfur bacteria use light energy to produce both ATP and reducing power; both are required for carbon fixation (reduction of CO2 to carbohydrate). However, not all organisms that use light as a source of energy carry out photosynthesis, since photoheterotrophs use organic compounds, rather than carbon dioxide, as a source of carbon. In plants, algae and cyanobacteria, photosynthesis releases oxygen. However, not all organisms that use light as a source of energy carry out photosynthesis, since photoheterotrophs use organic compounds, rather than carbon dioxide, as a source of carbon. In plants, algae and cyanobacteria, photosynthesis releases oxygen. This is called oxygenic photosynthesis. Biological organisms use special molecules called enzymes to make and break chemical bonds to create, change and degrade carbohydrates. Both plants and animals have enzymes to change chemical bonds, but only plants (and some simple organisms) have the ability convert solar energy into chemical energy on their own.
Photosynthetic