哈佛和耶魯大學法學院主動退出U.S. News排名！
哈佛大學、耶魯大學的法學院宣布? 退出U.S. News法學院的年度排名? 為什么兩所頂尖美國名校要做出這個決定？ 是否對U.S. News排名“權威”形成一種挑戰？ 耶魯大學：稱霸32年，排名存在缺陷 耶魯大學法學院院長Heat...
OCR A Level Biology:復習筆記2.4.3 Enzyme Activity: pH
Enzyme Activity: pH All enzymes have an?optimum pH?or a pH at which they operate best Enzymes are?denatured?at extremes of pH Hydrogen?and ionic bonds?hold the tertiary structure of the protein (ie...
CIE IGCSE Biology: 復習筆記：5.1.4 Enzymes & Temperature: Extended
CIE IGCSE Biology: 復習筆記：5.1.4 Enzymes & Temperature: Extended Enzymes & Temperature: Extended Enzymes are?proteins?and have a?specific shape, held in place by?bonds This is extremely i...
OCR A Level Biology:復習筆記2.4.2 Enzyme Action
Mechanism of Enzyme Action Enzymes have an?active site?where?specific substrates bind?forming an?enzyme-substrate complex The?active site?of an enzyme has a?specific shape?to fit a?specific substra...
OCR A Level Biology:復習筆記2.4.1 The Role of Enzymes
Enzymes as Catalysts Enzymes are?biological catalysts ‘Biological’ because they function in?living systems ‘Catalysts’ because they?speed up the rate of chemical reactions?without being?used up?or ...
OCR A Level Biology:復習筆記2.3.8 Translation
Translation Translation occurs?in the cytoplasm?of the cell After leaving the nucleus via a nuclear pore, the?mRNA molecule attaches to a ribosome In the cytoplasm, there are?free molecules of tRNA...
OCR A Level Biology:復習筆記2.3.7 Transcription
Transcription A?gene?is a?sequence of nucleotide bases?in a DNA molecule that?codes for the production of a specific sequence of amino acids, that in turn make up a?specific polypeptide?(protein) T...
OCR A Level Biology:復習筆記2.3.6 The Genetic Code
Nature of the Genetic Code A?gene?is a?sequence of nucleotides?that forms part of a DNA molecule (one DNA molecule contains many genes) This sequence of nucleotides (the gene)?codes for the product...
CIE IGCSE Biology: 復習筆記：5.1.3 Enzyme Action & Specificity: Extended
CIE IGCSE Biology: 復習筆記：5.1.3 Enzyme Action & Specificity: Extended Enzyme Action & Specificity: Extended Enzymes are?specific?to one particular substrate(s) as the?active site?of the ...
OCR A Level Biology:復習筆記2.3.5 DNA Replication
Semi-conservative Replication of DNA Before?a (parent) cell?divides, it needs to?copy the DNA?contained within it Doubling the DNA ensures that the two new (daughter) cells produced will both recei...
2022AMC10/12 B卷最新考情分析，預約獲取AMC B卷中英試卷真題+答案+視頻解析！
2022 AMC10/12 B卷今日落幕！ 同學們發揮得如何？ 與A卷對比后，難度是增是減了呢？ 翰林將盡快整理B卷的答案與解析 分析考試重難點和備考建議 并在靜默期后第一時間發給大家 2022 AMC10/12 A+B卷（預約）? 中英...
OCR A Level Biology:復習筆記2.3.4 DNA Purification
DNA Purification Practical investigations can be conducted to?purify?(isolate)?DNA?via the process of?precipitation Isolating DNA?from cells is an essential?starting point?for a huge range of other...
