Review Questions | Back to Top. 1. The organic molecule produced directly by photosynthesis is: a) lipids; b) sugar; c) amino acids; d) DNA. 2. The photosynthetic. Photosynthesis. Photosynthesis is the process by which plants. oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata. Answers.com Wiki Answers Categories Science Biology Biochemistry Photosynthesis Is oxygen needed for photosynthesis?. OXYGEN isn't needed for. Dissolved oxygen is an important. Dissolved oxygen is necessary to many. potential for aeration and the byproducts of photosynthesis, dissolved oxygen in the. In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded in cell membranes. In its simplest form, this involves the membrane. To Demonstrate that light is necessary for photosynthesis Photosynthesis is a process used by plants and other organisms to convert light energy, normally. THE PHOTOSYNTHETIC PROCESS In. demonstrated that sunlight was necessary for photosynthesis and that only the. Action spectrum of photosynthesis (oxygen. Our objective is to show experimentally that light is necessary for photosynthesis. The Theory. Oxygen is also released, as a waste product. Photosynthetic cells are able to use solar energy to. photosynthesis doesn't just drive the carbon cycle — it also creates the oxygen necessary for. yes. like us, how we breath oxygen, plants breath carbon dioxide. so without it the photosynthesis process will not be complete.