Proteins are large biological molecules consist of which of the following amino acids?: D-α-amino acids|D-β-amino acids|L- and D-β-amino acids|L-α-amino acids|L-β-amino acids
举一反三
- Which of the following amino acids doesn’t belong to essential amino acids?? Methionine|Isoleucine|Valine|Cysteine
- When a protein is completely hydrolyzed will the further analyse: ( ) A: Only detect amino acids in S conformation B: Often detect other molecules besides amino acids C: Never detect more than 20 standard amino acids D: Never detect fewer than 20 standard amino acids E: Only detect the 20 standard amino acids
- Which is not essential amino acids? ( )
- The final products of digestion are ? A: fatty acids, starch, glucose B: protein, amino acids, glucose C: protein, fat, carbohydrate D: glucose, amino acids, fatty acids
- The covalent bond between two adjacent amino acids in a protein chain is called a ___________; the chain of amino acids is also known as a polypeptide.