N-linked glycans are attached to proteins through n-acetylglucosamine or n-acetyl galactosamine to the amide side chain of:

Asparagine

Asparagine is an amino acid used in the synthesis of proteins and they are made up of amino group and carboxylic acid group. However, N-linked glycosylation is the attachment of glycan, a sugar molecule to the amide nitrogen of an asparagine.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics