Which of these three-letter codes is correct regarding the amino acid isoleucine?

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

Which of the following amino acids doesn’t belong to essential amino acids?? Methionine|Isoleucine|Valine|Cysteine

以下哪些为必需氨基酸（） A: methionine B: valine C: isoleucine D: cystein E: tyrosine

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

在果蝇的核基因中,AGA是编码Arginine(精氨酸)的密码子,而在果蝇的线粒体DNA中则编码 A: Threonine(苏氨酸) B: Serine(丝氨酸) C: Leucine(亮氨酸) D: Isoleucine(异亮氨酸) E: 赖氨酸

在果蝇的核基因中，AGA是编码Arginine (精氨酸)的密码子，而在果蝇的线粒体DNA[br][/br][br][/br][br][/br] A: Threonine (苏氨酸) B: Serine (丝氨酸) C: leucine (亮氨酸) D: Isoleucine (异亮氨酸)