Question

What is mean by AREOBIC REACTION?

Answer 1

Aerobic respiration is the process of producing cellular energy involving oxygen. Cells break down food in the mitochondria in a long, multistep process that produces roughly 36 ATP. The first step in is glycolysis, the second is the citric acid cycle and the third is the electron transport system.

Answer 2

Definition of Aerobic Respiration

Respiration is the metabolic process of most living things in which food molecules or glucose are turned into usable energy for the cell, called ATP. Respiration is the anti-process to photosynthesis, the process in which plants use sunlight and carbon dioxide to build food molecules releasing oxygen as a waste product.

During aerobic respiration, oxygen is present and helps the process to crank out energy very efficiently. Some organisms can also undergo anaerobic respiration, in which oxygen is absent, and a somewhat less efficient method of metabolism takes place. While photosynthesis takes place in the chloroplasts of plant and algae cells, aerobic respiration takes place in the cytoplasm, or the gooey inner cell space and mitochondria of all eukaryotic cells.

The Steps of Aerobic Respiration

It all starts with a sugar! An organism takes in carbohydrates for energy, and the digestion process breaks the carbs down into their smallest units, glucose, a type of sugar molecule. Cells then make energy by breaking the glucose molecule down and releasing its electrons, which are later used to help crank out ATP. There are three main steps in this process.

There are three main steps in this process. It begins with glycolysis. During glycolysis, the 6-carbon glucose molecule undergoes a series of reactions that break it down into two 3-carbon pyruvate molecules. The purpose of this process is to release electrons from the bonds in the glucose, which are scooped up by an acceptor molecule called NAD+, turning it into NADH when it accepts the electrons. In this process, two molecules of ATP are made. This step occurs in the cytoplasm, and the pyruvate and NADH molecules then enter the mitochondria for the next step.