Biology

1. - is an important organic compound in metabolism and is essential to the flow of energy in living cells.
2. - a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
3. - a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
6. -relating to, involving, or requiring an absence of free oxygen.
7. - are membrane-bound cell organelles that generate most of the chemical energy needed to power the cell's biochemical reactions.
8. - the breakdown of glucose by enzymes, releasing energy and pyruvic acid.

1. - the principal molecule for storing and transferring energy in cells.
2. - he synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.
4. respiration - s a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
5. transport chain - is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions, and couples this electron transfer with the transfer of protons across a membrane.