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【单选题】
关于蛋白质肽键的叙述,错误的是A.
一个氨基酸的α-羧基与另一个氨基酸的α-氨基脱水形成的酰胺键
B.
肽键氮上的氢和碳上的氧都参与氢键的形成
C.
肽键氮上的氢和碳上的氧总是呈反式构型
D.
在pH 0~pH 14范围内,肽键的亚氨基有明显解离倾向
E.
肽键具有部分性质
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【单选题】_______ is one of the great scientific achievements which paved the way for modern surgery.
A.
G ene based products
B.
V accination
C.
A spirin
D.
A nesthesia
【单选题】_______ is one of the great scientific achievements which paved the way for modern surgery .
A.
Anesthesia
B.
Aspirin
C.
Vaccination
D.
Gene based products
【单选题】The phrase 'A Law of Nature' is probably rarer in modern scientific writing than was the case some generations ago. This is partly due to very natural objection to the use of the word 'law' in two dif...
A.
the name 'A Law of Nature' is not quite adequate
B.
Laws of Nature have a lot of practical and theoretical value
C.
Laws of Nature do not always accurately state the nature of matters
D.
law has two different meanings
【单选题】__________ is the study of the chemicals derived from plants by modern and scientific theories and methods.
A.
Hydrophyte
B.
Phytochemistry
C.
Xerophyte
D.
Respiration
【单选题】关于特定突变位点探针的设计说法正确的是
A.
采用等长移位设计法
B.
检测变化点应该位于探针中心
C.
探针设计时不需要知道待测样品中靶基因的精确细节
D.
检测变化点应该位于探针的两端
【单选题】( )4. He provided the foundations of modern scientific methodology and thought
A.
Confucius
B.
Descartes
C.
Nietzsche
D.
Plato
E.
Aristotle
【单选题】Modern scientific researchers have reported to us that ________.
A.
fat people eat less food and are less active
B.
fat people eat more food than slim people and are more active
C.
fat people eat more food than slim people but are less active
D.
thin people run less, but have greater increase in food intake
【单选题】Modern scientific researches have reported to us that ______.
A.
fat people eat less food and are less active
B.
fat people eat more food than slim people and are more active
C.
fat people eat more food than slim people but are less active
D.
thin people run less, but have greater increase in food intake
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