Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
Answer: Spleen
Explanation: because i took the test and got 100% ngl
Answer:proline, cysteine, Proline
Explanation:Proline causes kinks in the amino acid. Disulfide bonds in proteins are formed between the thiol groups of cysteine residues through the process of oxidative folding. Cys is considered to be hydrophobic, while proline is considered to be polar
Because it contains hydrogen (H+) ions
