All living organisms partake in some form of cellular respiration. This includes bacteria, fungi, protists, plants and animals. Cellular respiration is sometimes called aerobic respiration because it requires oxygen to occur, although a few organisms are capable of anaerobic respiration, respiration without oxygen.Know More
All life-forms require energy to move, grow, repair damage and reproduce. Many organisms, such as plants and algae, are able to produce their own energy from sunlight. These photosynthesizing organisms form the base of their respective food chains, and all subsequent organisms in these food chains obtain their energy by consuming this photosynthesizing life or consuming other organisms that rely on photosynthesizing life.
The chemical energy that all organisms acquire through photosynthesis or consumption provide the cells with nutrients, such as complex and simple sugars, fats and amino acids. These nutrients are broken down in the cellular respiration process in the presence of oxygen. The final product of the cellular respiration process is an energy-rich molecule called ATP. This ATP is the simplest form of energy used by all life.
Anaerobic life-forms use other oxidizing agents besides oxygen to break down complex nutrients into simpler ones. These oxidizing agents include sulfates and nitrates, but they are not as efficient at oxidization as oxygen.Learn more about Biology
Pyruvate is involved in several steps of cellular respiration including glycolysis, where it is the product of glucose being broken down, the Kreb's cycle uses the pyruvate to complete its process as well. During vigorous exercise, pyruvate is turned into lactate to give more energy to the oxygen-starved muscles.Full Answer >
The main purpose of cellular respiration is to convert biochemical energy from nutrients into adenoside triphosphate, or ATP, a chemical energy needed by cells to perform certain functions. Muscle and brain nerve cells require energy that contains a high number of mitochondria to perform effectively.Full Answer >
Cellular respiration is performed by living cells in every variety of organism. It involves the production of an energy source within cells to be used as fuel for biological processes.Full Answer >
Cellular respiration produces six carbon dioxide molecules, six water molecules and 38 molecules of adenosine triphosphate, or ATP, for every molecule of glucose. This process occurs in four stages: glycolysis, the transition reaction, the Krebs cycle and the electron transport chain.Full Answer >