1 Birth defects in the sinuses. 2  Infection in the bones of the sinuses (osteomyelitis) 3  Injury to the face over the sinuses from trauma. 4  Masses and tumors, including cancer. 5  Nasal polyps. 6  The cause of repeated bloody noses (epistaxis)  Sinus infection (sinusitis)
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.n most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis maintains atmospheric oxygen levels and supplies all of the organic compounds and most of the energy necessary for life on Earth.
Is the production of ATP in photosynthesis similar to the production of ATP in cellular respiration? Photosynthesis is often described as the reverse of cellular respiration. Respiration breaks down complex molecules to release energy that is used to make ATP. Photosynthesis takes energy from photons and uses it to build complex molecules. However both systems use an electron transport chain and associated proton pump and ATP synthase as a key part of the process.