• 2022-06-19 问题

    Which one of the following amino acids is NOT contained in the<br/>protein? () A: Cystine B: Arginine C: Lysine D: Citrulline

    Which one of the following amino acids is NOT contained in the<br/>protein? () A: Cystine B: Arginine C: Lysine D: Citrulline

  • 2022-06-19 问题

    Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine

    Which of the following amino acids does not exist in protein molecule A: cysteine B: histidine C: citrulline D: arginine E: lysine

  • 2022-06-07 问题

    下列氨基酸中()具有非极性疏水侧链。 A: alanin(Ala) B: histidine(His) C: arginine(Arg) D: valine(val)

    下列氨基酸中()具有非极性疏水侧链。 A: alanin(Ala) B: histidine(His) C: arginine(Arg) D: valine(val)

  • 2022-06-06 问题

    According to the first paragraph, gelatin________. A: is a protein that can be obtained from animals B: is harmful to human bodies C: should not be made into a dessert D: is lacking in tryptophan and arginine

    According to the first paragraph, gelatin________. A: is a protein that can be obtained from animals B: is harmful to human bodies C: should not be made into a dessert D: is lacking in tryptophan and arginine

  • 2022-06-07 问题

    在哺乳动物的核基因中,UGA是终止密码,但在线粒体DNA中,却是()的密码子。 A: Arginine (精氨酸) B: Leucine (亮氨酸) C: Tryptophan (色氨酸) D: Serine (丝氨酸)

    在哺乳动物的核基因中,UGA是终止密码,但在线粒体DNA中,却是()的密码子。 A: Arginine (精氨酸) B: Leucine (亮氨酸) C: Tryptophan (色氨酸) D: Serine (丝氨酸)

  • 2022-06-07 问题

    8.在哺乳动物的通用遗传密码中,UGA是终止密码,但在线粒体遗传密码中,却是()的密码子 A: Arginine(精氨酸) B: Leucine(亮氨酸) C: Tryptophan(色氨酸) D: Serine(丝氨酸)

    8.在哺乳动物的通用遗传密码中,UGA是终止密码,但在线粒体遗传密码中,却是()的密码子 A: Arginine(精氨酸) B: Leucine(亮氨酸) C: Tryptophan(色氨酸) D: Serine(丝氨酸)

  • 2022-06-07 问题

    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

  • 2022-06-07 问题

    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)

    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)

  • 2022-06-06 问题

    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

    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

  • 2022-06-07 问题

    在哺乳动物的核基因中,有三个终止密码,但终止密码UGA在线粒体的mRNA中,却是( ) 的密码子。[br][/br][br][/br][br][/br] A: Arginine (精氨酸) B: Leucine (亮氨酸) C: Tryptophan (色氨酸) D: Serine (丝氨酸)

    在哺乳动物的核基因中,有三个终止密码,但终止密码UGA在线粒体的mRNA中,却是( ) 的密码子。[br][/br][br][/br][br][/br] A: Arginine (精氨酸) B: Leucine (亮氨酸) C: Tryptophan (色氨酸) D: Serine (丝氨酸)

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