In the process of protein digestion and absorption, the following form with the highest absorption efficiency is
A: Dipeptide
B: Amino acids
C: Polypeptide
D: Intact protein
A: Dipeptide
B: Amino acids
C: Polypeptide
D: Intact protein
A
举一反三
- 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
- For a typical protein length of 300 amino acids, more than ______ different polypeptide chains could theoretically be made
- The spatial conformation of a protein mainly depends on A: α-helix and β-sheet B: the sequence of amino acids in polypeptide chain C: disulfide bonds in polypeptide chain D: hydrophobic effects in polypeptide chain E: hydrogen bonds in polypeptide chain
- Individuals with cirrhosis frequently display elevated levels of amino acids in the blood. The source of these amino acids is predominantly which one of the following A: Red blood cell turnove B: Liver protein turnove C: Enterocyte degradation and turnove D: Muscle protein turnove E: Plasma protein turnove
- The protein has the properties of UV absorption, which has the maximum absorption peak at 260nm.( )
内容
- 0
Only protein contains amino acids in living organism.
- 1
Which one of the following amino acids is NOT contained in the<br/>protein? () A: Cystine B: Arginine C: Lysine D: Citrulline
- 2
The process that the foods become the component molecules in our body is . (digestion / absorption)
- 3
Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine
- 4
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.