核酸的组成 DNA RNA 脱氧核糖 核糖 腺嘌吟胞嘧啶腺嘌呤胞嘧啶 鸟嘌呤胸腺嘧啶鸟嘌呤尿嘧啶 双链 单链
核酸的组成 DNA RNA 脱氧核糖 核糖 腺嘌吟 胞嘧啶 腺嘌呤 胞嘧啶 鸟嘌呤 胸腺嘧啶 鸟嘌呤 尿嘧啶 双链 单链
034 nanometer mistance beween 3 4 nanometers wie comolete douD/e helix O-PrO o-do H O
newly unzipped Pew DNA formin forming region RNA polypeptide chain 3. Some proteins Serve a ccr GGAcUA structural PROTEINS nater 4. Some proteins CARBOHYDRATES serve as the enzymes used in synthesizing LIPIDS other organic substances OTHER ORGANIC MOLECULES 1. An RNA strand is assembled 2. Each nuc eotide triplet calls 5. These substances end up accoraing to a sequence of for a specific amino acid(green in new membranes, new code words(nucleotide biocks), which becomes linked into cytoplasm, new organelles. triplets) in a gene region o a po'yoeptide chain at the no so on DNA Tnen the RNA moves cors ruction site. One or more to construction sites in the chains will become tolded and cytopasm wasted into a protein molecule
DNA复制 半保留复制 T A A CG CG G OLD NEW NEW OLD
DNA复制 • 半保留复制
DNA复制 半不连接复制 由于DNA多聚酶只能从5→3’方向 合成DNA,因而半保留复制不能完全 解释
DNA复制 • 半不连接复制 由于DNA多聚酶只能从5’ → 3’方向 合成DNA，因而半保留复制不能完全 解释