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A. 谷氨酸 %0A%09%09p%20%7B%20margin-bottom%3A%200.25cm%3B%20direction%3A%20ltr%3B%20color%3A%20%23000000%3B%20line-height%3A%20115%25%3B%20text-align%3A%20justify%3B%20orphans%3A%200%3B%20widows%3A%200%3B%20background%3A%20transparent%20%7D%0A%09%09p.western%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20en-US%20%7D%0A%09%09p.cjk%20%7B%20font-family%3A%20%26quot%3B%E5%AE%8B%E4%BD%93%26quot%3B%2C%20%26quot%3BSimSun%26quot%3B%3B%20font-size%3A%2010pt%3B%20so-language%3A%20zh-CN%20%7D%0A%09%09p.ctl%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20ar-SA%20%7D B. 甘氨酸 %0A%09%09p%20%7B%20margin-bottom%3A%200.25cm%3B%20direction%3A%20ltr%3B%20color%3A%20%23000000%3B%20line-height%3A%20115%25%3B%20text-align%3A%20justify%3B%20orphans%3A%200%3B%20widows%3A%200%3B%20background%3A%20transparent%20%7D%0A%09%09p.western%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20en-US%20%7D%0A%09%09p.cjk%20%7B%20font-family%3A%20%26quot%3B%E5%AE%8B%E4%BD%93%26quot%3B%2C%20%26quot%3BSimSun%26quot%3B%3B%20font-size%3A%2010pt%3B%20so-language%3A%20zh-CN%20%7D%0A%09%09p.ctl%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20ar-SA%20%7D C. 亮氨酸 %0A%09%09p%20%7B%20margin-bottom%3A%200.25cm%3B%20direction%3A%20ltr%3B%20color%3A%20%23000000%3B%20line-height%3A%20115%25%3B%20text-align%3A%20justify%3B%20orphans%3A%200%3B%20widows%3A%200%3B%20background%3A%20transparent%20%7D%0A%09%09p.western%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20en-US%20%7D%0A%09%09p.cjk%20%7B%20font-family%3A%20%26quot%3B%E5%AE%8B%E4%BD%93%26quot%3B%2C%20%26quot%3BSimSun%26quot%3B%3B%20font-size%3A%2010pt%3B%20so-language%3A%20zh-CN%20%7D%0A%09%09p.ctl%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20ar-SA%20%7D D. 苯丙氨酸 %0A%09%09p%20%7B%20margin-bottom%3A%200.25cm%3B%20direction%3A%20ltr%3B%20color%3A%20%23000000%3B%20line-height%3A%20115%25%3B%20text-align%3A%20justify%3B%20orphans%3A%200%3B%20widows%3A%200%3B%20background%3A%20transparent%20%7D%0A%09%09p.western%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20en-US%20%7D%0A%09%09p.cjk%20%7B%20font-family%3A%20%26quot%3B%E5%AE%8B%E4%BD%93%26quot%3B%2C%20%26quot%3BSimSun%26quot%3B%3B%20font-size%3A%2010pt%3B%20so-language%3A%20zh-CN%20%7D%0A%09%09p.ctl%20%7B%20font-family%3A%20%26quot%3BTimes%20New%20Roman%26quot%3B%2C%20serif%3B%20font-size%3A%2010pt%3B%20so-language%3A%20ar-SA%20%7D
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参考答案：
举一反三
【单选题】谷氨酸的α-羧基的pK1=2.1，α-氨基的pK2=9.5，侧链pKR=4.1，因此，——
A.
谷氨酸pI=3.1
B.
谷氨酸pI=5.2
C.
谷氨酸pI=5.8
D.
谷氨酸pI=6.8
【单选题】谷氨酸的pK1(-CO0H)为2.19，pK2(-NH3+)为9.67，pK3(-COOH)为4.25，其pI是______。
A.
3.25
B.
3.22
C.
6.96
D.
5.93
相关题目：
【单选题】谷氨酸的α-羧基的pK1=2.1，α-氨基的pK2=9.5，侧链pKR=4.1，因此，——
A.
谷氨酸pI=3.1
B.
谷氨酸pI=5.2
C.
谷氨酸pI=5.8
D.
谷氨酸pI=6.8
【单选题】谷氨酸的pK1(-CO0H)为2.19，pK2(-NH3+)为9.67，pK3(-COOH)为4.25，其pI是______。
A.
3.25
B.
3.22
C.
6.96
D.
5.93
参考解析：
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