Structure is achieved when a protein folds into a compact, three-dimensional between side-chain r groups of amino acids. structure is the sequence of amino acids in a protein. structure describes the alpha helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain. structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex. a. primary,
b. secondary,
c. tertiary,
d. quaternary

The answer to your question is:

Explanation:

1._Terciary__ structure is achieved when a protein folds into a compact, three-dimensional between side-chain R groups of amino acids.

2._Primary___ structure is the sequence of amino acids in a protein.

3._Secondary___ structure describes the alpha helices and beta-sheets that are formed by hydrogen bonding between backbone atoms located near each other in the polypeptide chain.

4._Quaternary___ structure is the result of two or more protein subunits assembling to form a larger, biologically active protein complex.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

how important do you think an instrument is to the musician who plays it?