Photosynthesis and Aerobic Cellular Respiration

Photosynthesis and Aerobic Cellular Respiration

Photosynthesis and Aerobic Cellular Respiration

Cells of all organisms are capable in obtaining the energy necessary to fuel chemical reactions for development, fix, survival, and reproduction. Photosynthesis & cellular respiration are the major pathways of energy flow in dwelling things. Photosynthesis is a method by which plants and some other organisms convert, lightweight power from the sun, CO2 from the air & H2O from the soil, into chemical energy stored in substances like glucose. Cellular respiration is a method in which O2 is delivered to cells in an organism & metabolic method in cells directs to the production of ATP by the breakdown of organic substances. Cellular respiration happens in the mitochondrion of the cell and photosynthesis happens in the chloroplast. There are some similarities between the process involved however their products and reactants are the exact opposite.

Photosynthesis can be split up into two stages: Light answer & Calvin Cycle. The process of photosynthesis begins when excited its electrons go into a primary electron acceptor (PEA). They are then passed onto a series of molecules known as the electron transport chain (ETC). The electrons eventually combine with a proton and NADP+ to form NADPH. Another process called chemiosmosis also occurs in the light reaction. Chemiosmosis is a process in which ATP (energy) is produced. So, light, H2O, ADP and NADP+ are required for the light reaction and O2, ATP & NADPH is produced. This cycle is called a bio-chemical pathway. Sometimes plants can't produce 3-carbon compounds. There are two types of solutions that plants use: C4 and the CAM Pathway. In C4 pathways, plants synthesize CO2 as a 4-carbon compound and in CAM pathways, plants synthesize their food at night.

Like plants, humans and other animals depend on glucose as an energy source, but they ...