Cellular Respiration Lab Report

And uses energy the first step is altering the food into its component chemical compound and then getting those molecules into yourself that process is called digestion once inside yourself the process of turning that bite of food into useful energy by cellular respiration begins the process of digestion results with carbohydrates and other molecules being removed from the consume food and transported into the bloodstream from their nutrients like the carbohydrate glucose will leave the bloodstream through a capillary wall and Andrew tissue sell ones inside the cell cellular respiration will completely oxidized the glucose molecule releasing high-energy electrons the overall goal is to make ATP the storage form of energy for most sales cellular

respiration is a four-stage process that begins with glycolysis glycolysis literally mean splitting sugars and it is the first step of cellular respiration occurring in the cytoplasm of the cell glycolysis consists of two distinct phases and energy investment face and an energy harvesting face in the energy investment face to ATP molecules transfer energy to the glucose molecule forming a six carbon sugar die phosphate molecule this molecule splint and the energy harvesting phase begins during this phase the two three carbon molecules are converted to pyruvate and ATP is formed glycolysis is a 10 step reaction that involves the activity of multiple enzymes and enzyme assistance in the prof is a net of two molecules of ATP 2 molecules of pyruvate and two high energy electron carrying molecules of NADH are produced when oxygen is present the pyruvate molecules and NADH and of the mitochondria and the next stage of cellular respiration begins the next stage of cellular respiration involves the movement of pyruvate into the mitochondria where it undergoes oxidation of pyruvate molecule is converted into a compound called acetylcoa in the process of pyruvate oxidation electrons are transferred to NAD producing NADH and a carbon is lost for many carbon dioxide the next stage is the citric acid cycle also called the Krebs cycle here acetylcoa will bind with a starting compound called oxaloacetate and through a series of enzymatic redox reactions all carbon hydrogen and oxygen and pyruvate ultimately end up as carbon dioxide and water the pathway is called a cycle because oxaloacetate is the starting and ending compound of the pathway for every glucose that enters glycolysis the cycle completes twice once for each molecule of pyruvate that end of the mitochondria during pyruvate oxidation and the citric acid cycle Annette of 8 NADH and fadh2 to ATP and 6co2 are produced for each glucose molecule in order to understand how the majority of the energy is produced by aerobic respiration we need to follow the NADH and fadh2 molecules to the next stage the electron transport chain the electron transport chain is a series of membrane-bound carriers in the mitochondria that pass electrons from one to another as the electrons are transferred between the membrane proteins this is able to capture energy and use it to produce ATP molecules proteins in the chain of hydrogen ions across a membrane when the hydrogen ions flow back across the membrane through an ATP synthase complex ATP is synthesized by the enzyme ATP synthase oxygen acts as the terminal electron acceptor by accepting electrons oxygen is reduced to form water a byproduct of the electron transport chain all the high energy electrons carriers from the previous stages of cellular respiration bring their electrons into the chain from this The bulk of ATP from the entirety of cellular respiration is produced a net of 32 to 36 ATP in summary we have seen how the four stages of cellular respiration are responsible for converting the energy found in the glucose molecule into ATP the energy battery of the cell on average 36 ATP molecules are produced per glucose molecule that enter the cell in the process of producing ATP oxygen in the electron transport chain and the carbon dioxide is produced as a by-product is released of cellular respiration is to transfer the energy from the daily into ATP that our bodies can use of a snack or meal with capturing the energy from the breakdown of the nutrients into energy and carbon dioxide