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...
2022 AMC10/12 B卷今日落幕！ 同學(xué)們發(fā)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(diǎn)和備考建議 并在靜默期后第一時(shí)間發(fā)給大家 2022 AMC10/12 A+B卷（預(yù)約）? 中英...
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...
DNA Structure The nucleic acid DNA is a?polynucleotide?– it is made up of?many nucleotides?bonded together in a?long chain A DNA nucleotide DNA molecules are made up of?two polynucleotide st...
Structure of ATP & ADP All organisms require a constant supply of energy to maintain their cells and stay alive In all organisms this energy is required for: Anabolic reactions?(building larger...
Nucleotides DNA and RNA are nucleic acids:?polymers?that are made up of?many repeating units?(monomers) called?nucleotides Each nucleotide is formed from: A?pentose sugar?(a sugar with 5 carbon ato...
2022年AMC10/12 A卷已落幕！同學(xué)們紛紛前來反饋，對題目難度的感嘆各有不同！中國考區(qū)的實(shí)際考試時(shí)間已經(jīng)晚于MAA要求的考試時(shí)間（美東標(biāo)準(zhǔn)時(shí)間11月10日23：59），沒有靜默期限制。 大家關(guān)心的AMC12 A卷答案來了！...
CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.5 Enzymes & pH: Extended Enzymes & pH: Extended The optimum pH for most enzymes is 7 but some that are produced in acidic conditions, such as the stomach, h...
CIE IGCSE Biology: 復(fù)習(xí)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...
