For the following tripeptide, identify and label the N-terminal amino acid and C-terminal amino acid. Provide the name for each.

Labeled tripeptide with cysteine as N-terminal and threonine as C-terminal amino acid.

Labeled tripeptide with threonine as N-terminal and serine as C-terminal amino acid.

Labeled tripeptide with serine as N-terminal and threonine as C-terminal amino acid.