What is the energy carrying molecule in the cell?
Adenosine triphosphate, (ATP), energy-carrying molecule found in the cells of all living things. ATP captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.
These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose. Then, via respiration processes, cells use oxygen and glucose to synthesize energy-rich carrier molecules, such as ATP, and carbon dioxide is produced as a waste product.
- Electron carrier molecules do just what their name says. They carry electrons from one part of an energy processing system to another, providing the necessary energy and reducing power to make chemical reactions occur. NADH is produced during glycolysis and the Krebs cycle and then used in the electron transport chain.
- An energy carrier is a substance (energy form) or sometimes a phenomenon (energy system) that contains energy that can be later converted to other forms such as mechanical work or heat or to operate chemical or physical processes.
- FAD is a second electron carrier used by a cell during cellular respiration. It stands for flavin adenine dinucleotide. Like NAD, FAD can temporarily store energy during cellular respiration via a reduction reaction. When FAD reacts with two hydrogen atoms, it can form FADH2.
Carrier molecules are usually proteins bound to a nonprotein group; they can undergo oxidation and reduction relatively easily, thus allowing electrons to flow through the system. There are four types of carrier: flavoproteins (e.g. FAD), cytochromes, iron–sulphur proteins (e.g. ferredoxin), and ubiquinone.
- Unlike channel proteins which only transport substances through membranes passively, carrier proteins can transport ions and molecules either passively through facilitated diffusion, or via secondary active transport.
- electron carrier. Any of various molecules that are capable of accepting one or two electrons from one molecule and donating them to another in the process of electron transport. As the electrons are transferred from one electron carrier to another, their energy level decreases, and energy is released.
- In photosynthesis, the main electron carrier molecule is NADPH, which is similar to NADH. NADPH is produced by oxidizing NADP+ during the light dependent reactions. NADPH is then used for reducing power during the Calvin cycle, where it helps power the reactions used to make glucose.
Cells need a source of energy, they get this energy by breaking down food molecules to release, the stored chemical energy.This process is called 'cellular respiration'. The process is happens in all the cells in our body. Oxygen is used to oxidize food, main oxidized food is sugar(glucose).
- Cells conduct cellular respiration to get 36 ATP molecules which contain the majority of the energy in a cell. ATP is then further broken down into ADP and energy. (ATP is adenosine triphosphate, ADP is adenosine diphosphate).
- This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.
- The osteoclasts remove bone by dissolving the mineral and breaking down the matrix in a process that is called bone resorption. The osteoclasts come from the same precursor cells in the bone marrow that produce white blood cells.
Updated: 21st October 2019