以下哪些为必需氨基酸（）
A: methionine
B: valine
C: isoleucine
D: cystein
E: tyrosine
A: methionine
B: valine
C: isoleucine
D: cystein
E: tyrosine
举一反三
- The branch amino acids involved in “the hypothesis of plasma amino acid imbalance” include A: Valine, leucine and isoleucine B: Valine, leucine and tyrosine C: Leucine, isoleucine and phenylalanine D: Tyrosine and phenylalanine E: Valine, tyrosine and phenylalanine
- 真核生物合成初始出现在多肽链N端的氨基酸是（）。 A: methionine B: valine C: N-formylmethionine D: leucine E: isoleucine
- Which of the following amino acids doesn’t belong to essential amino acids?? Methionine|Isoleucine|Valine|Cysteine
- 氨基酸脱氨基可生成相应的α-酮酸，后者在体内参与合成 A: 必需脂肪酸 B: 非必需脂肪酸 C: 必需氨基酸 D: 非必需氨基酸 E: 维生素A
- Whichone<br/>is<br/>the essential amino acid?() A: glycine B: methionine C: tyrosine D: Glutamine