enzymes are usually composed of which type of molecule
Enzyme Enzymes are known to catalyze more than 5,000 biochemical reaction types.[4] Most enzymes are proteins, although a few are catalytic RNA molecules. The latter are called ribozymes. Enzymes' specificity comes from their unique three-dimensional structures.
Citric acid cycle Products of the first turn of the cycle are one GTP (or ATP), three NADH, one QH2, and two CO2.
Macromolecule The single-stranded nature of protein molecules, together with their composition of 20 or more different amino acid building blocks, allows them to fold in to a vast number of different three-dimensional shapes, while providing binding pockets through which they can specifically interact with all manner of molecules. In addition, the chemical diversity of the different amino acids, together with different chemical environments afforded by local 3D structure, enables many proteins to act as Enzymes, catalyzing a wide range of specific biochemical transformations within cells. In addition, proteins have evolved the ability to bind a wide range of cofactors and Coenzymes, smaller molecules that can endow the protein with specific activities beyond those associated with the polypeptide chain alone.
In situ In chemistry, in situ typically means "in the reaction mixture."
Small intestine Absorption of the majority of nutrients takes place in the jejunum, with the following notable exceptions:
Rate equation k is the first order rate constant, which has units of 1/s or sâˆ’1.