Here's what happens: 1  The receptors, which are nerve endings in your nasal passageways, detect an irritant. 2  Nerves carry these impulses to the sneezing center in your brain stem. 3  The sneezing center sends its instructions along your facial nerve and the nerves that lead to your lungs and diaphragm. 4  Your eyes start to water, and your nasal ...
TOP. THE MAIN EVENTS OF PHOTOSYNTHESIS (higher level). Photosynthesis takes place in two stages; the light stage and the dark stage. The light stage needs light so it is called the light-dependent stage. The dark stage is called the light-independent stage. TOP. THE LIGHT STAGE. The light stage takes place in the chloroplast s thylakoid membranes. The events of the light stage are as follows: 1. Light Absorption: All the colours of white light (except green light) are absorbed by pigments in the chloroplast.
Photosynthesis is the process by which plants use the energy from sunlight to produce sugar, which in simpler words is the 'fuel' used by all living things. The photosynthesis equation is a chemical representation of the process of photosynthesis which takes place in the chloroplasts.Plants take in carbon dioxide and water to produce glucose (a sugar) and oxygen. The following is the chemical equation, that expalins this process: In chemical language, this is written as,hat does the Equation mean: Photosynthesis occurs in two stages. In the first stage, light-dependent reactions capture energy of light and use it to make the energy-storage molecules called ATP and NADPH. During the second stage, the reactions then use these products to capture and reduce carbon dioxide.