AP Bio Synthesis Essay

AP Bio Reflection

My game was focused around mechanism of energy transfer which includes photosynthesis reactions and respiration reactions. Photosynthesis takes place in two stages, the light-dependent reactions and light-independent reactions. Light-dependent reactions are when sunlight is absorbed by the chlorophyll and used for energy which is then converted into stored chemical energy. This chemical energy is in the form of NADPH and ATP. These reactions take place in the thylakoid, inside the chloroplast. Light-independent reactions or the Calvin Cycle use energized electrons from light-dependent reactions as energy. This energy is used to form carbohydrates from carbon dioxide molecules. Light-independent reactions require the products of light-dependent reactions in order to function. Energy carrier molecules, ATP and NADPH are what construct the new carbohydrates molecules. Cellular respiration is the breaking down of sugar in the presence of oxygen. It occurs partially in the cytoplasm as well as the mitochondria. It can be broken up into four stages which include glycolysis, transition reaction, Krebs Cycle, and Electron Transport Chain (ETC). Glycolysis is where one glucose is broken down into two molecules of pyruvic acid. Transition Reaction then shuttles the pyruvic acid to the mitochondria, where it

enters the Krebs Cycle. The Krebs Cycle extracts the electrons for making ATP, and the Electron Transport Chain produces the ATP.
Everything on earth needs life to live, some of the essentials are air, water, and light.

Photosynthesis creates energy that is released during cell activity. Interactions between all species is needed for life to stay in balance. Photosynthesis is largely responsible for producing the oxygen on Earth and its atmosphere. It supplies organic compounds used to build materials used by us such as wood and cotton. Photosynthesis is the process in which new energy becomes available. It is also the source of energy stored in fossil fuels. Without photosynthesis and respiration, life on earth couldn’t exist. Ecosystems and cascades wouldn’t be able to

function.
In order to reproduce and maintain homeostasis the body needs to be able to function by breathing. Cellular respiration has a role in inhaling and exhaling properly. Breathing purpose is to move gases into the body and then out. Cellular respiration needs oxygen which is brought into the body from inhaling. Cellular respiration produces carbon dioxide and water which is then released from the body which each exhalation. Through Cellular Respiration our body is not only able to release carbon dioxide which is needed by other organisms but it is also able to take oxygen in to continue to function our body. This is needed to evolve as well as reproduce. Cellular respiration is essential to the life process.