4.1 Ear anatomy. The ear can be seen as three parts: the outer ear, the middle ear and the inner ear - each with a dedicated function. The outer ear consists of the ear shell (pinna) and the auditory canal. Its function is to guide air pressure waves to the middle ear- with the ear shell increasing the sensitivity of the ear to the front side of the head, supporting front/rear localisation of audio signals.
Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture the energy of light and use it to make the energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use these products to capture and reduce carbon dioxide.
overview of Photosynthesis stAGe 1: Light-Dependent reactions 1 energy from sunlight is absorbed. Water mol-ecules are broken down and oxygen is released. stAGe 2: Light-independent reactions 6h2o chloroplast sunlight chloroplast (the plant cell organelle where photosynthesis takes place) 6o2 3carbon dioxide molecules are used to build sugars.