Photon

job of photosystem I and photosystem II is to aid in the production of ATP. This begins in photosystem II where the reaction center is p680, this means it absorbs light at 680nm, which is red light. (pg.301) Photons comedown from light and are absorbed by light harvesting complexes. The photon is then bounced from complex to complex until it comes to p680.(pg. 304) P680 requires an electron, which it gets from a water molecule. The electron is taken and then moves into p680, which excites the…

the needs The x-ray beam given off an x-ray tube may be changed to suit the needs of the use by changing the following: Tube Voltage (kVp): The alteration of tube voltage affects both quality & intensity. It affects quality because of the maximum photon energy that is determined by the tube voltage. Thus, the higher the tube voltage,…

1. Personal Hygiene: “Hand Washing, fingernails, food worker illness policy (including exclusion of ill workers, cuts, burns, bandages, etc.), hair, uniforms, glove use, jewelry, personal cleanliness, or unsanitary habits such as eating, drinking, smoking, or spitting are all parts of defining personal hygiene standards.” Poorly handwashing is one of the leading causes of foodborne illness. 2. Time and Temperature Control of Foods: “Able to reduce bacterial growth in potentially hazardous foods…

Background: Photosynthesis is the process by which photoautotrophs convert photons of kinetic light energy into potential chemical energy (food) by synthesizing glucose from water and carbon dioxide and releasing oxygen as a waste product. Sunlight radiation travels in waves but acts like particles of energy called photons. During photosynthesis, these photons are harvested to produce chemical energy in the form of carbohydrates. Autotrophs are “self-feeder” organisms that make their own…

A star is known as “a fixed luminous point in the night sky that is a large, remote incandescent body like the sun” (Oxford Dictionary). The life cycle of a star is a very complex and magnificent process. Every star starts out as a nebula and have their own physical features. They all evolve and turn into something beautiful. Every star's physical features vary. Their diameters can range from 450 times smaller to 1,000 times larger than the sun. Temperatures expand from 3,000 degrees Celsius to…

long-term side effects such as less severe cognitive damage, while maintaining the same hormonal levels as the older form of therapy (photon radiotherapy). One primary difference between the two therapies revolves around the way in which radiation passes through the patient’s body, which has made serious improvements that some people may not be aware of. Photon radiotherapy actually uses radiation with the X-ray beam which passes through the patient’s whole body, while the newer, more…

Solar Energy Energy is considered as the most important issue of the 21st century. About 85% of today’s modern world use of energy comes from fossil fuels (Blah Blah). These particular resources, fossil fuels, are finite in quantity, and has been a major cause of air pollution and global warming. Scientists are finding alternative sources of energy to solve the century’s puzzle, a resource which is renewable, natural and efficient such as solar energy. Over 2700 years ago, people have been…

current through a filament or a pocket of inert gas.” ("Light Bulb - Definition of Light Bulb in English | Oxford Dictionaries") Light is a form of energy emitted by an atom. Light is made up of many light photons, which are small particles that have energy and momentum but no mass. Atoms release photons when the electrons become “excited” and then return to their original orbital. The colour of the light is dependent upon the wavelength of the emitted light, which is dependent upon how much…

The sensor system measures the photon intensity of the X-ray beam after it has passed through the object. These measurements are done in a two-dimensional array of small regions of 20 to 30 square micrometers, called pixels. The photon intensity is measured electronically on a scale of 256 gray values (0–255). Zero on this scale means that the maximum radiation is measured, which corresponds…

produces energy in the form of ATP. The light independent (LI) reactions of photosynthesis take place in the stroma while the light dependent (LD) reactions happen in the thylakoid membranes of the chloroplasts. LD reactions need the presence of photons to occur while LI reactions need the materials produced in the LD reactions. The LD reactions generate NADPH and ATP needed for the LI reactions while the LI reactions produce the famous products of photosynthesis, oxygen and glucose. Both…