protein? ()
A: Cystine
B: Arginine
C: Lysine
D: Citrulline
举一反三
- Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine
- Which one of the following amino acids in the protein does NOT have<br/>its genetic codon? ( ) A: Methionine B: Hydroxyproline C: Tryptophan D: Glutamine
- 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
- In each type of protein, the amino acids are present in a unique order, called the _______________, which is exactly the same from one molecule of that protein to the next.
- Which one of the<br/>following amino acids can be phosphorylated? () A: Tyrosine B: Alanine C: Aspartate D: Methionine E: Glutamine
内容
- 0
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
- 1
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
- 2
Which of the following amino acids doesn’t belong to essential amino acids?? Methionine|Isoleucine|Valine|Cysteine
- 3
Found in the chromatin of all eukaryotic cells, histones have molecular weights between 11,000 and 21,000 and are very rich in the basic amino acids arginine and lysine which together make up about _____ of all the amino acid residues. A: 1/6 B: 1/5 C: 1/4 D: 1/3
- 4
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