AQA A Level Biology复习笔记4.1.7 Non-Coding DNA
Non-Coding DNA The genome within eukaryotic cells contains many non-coding sections of DNA Non-coding DNA does not code for any amino acids Non-coding DNA can be found between genes, ...
2023英国大学本土排名CUG TOP20院校A-Level成绩及雅思要求
6月14日，全英三大权威排名之一的完全大学指南CUG（Complete University Guide）发布了2023年英国大学排名榜单！作为专注于本土大学的英国榜单，此次排名共有130所大学上榜，涵盖了74个专业领域。 2023CUG排名亮...
AQA A Level Biology复习笔记4.1.6 The Triplet Code
The Triplet Code 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 (...
AQA A Level Biology复习笔记4.1.5 Genetic Loci
Genetic Loci Genes, loci and alleles The DNA contained within chromosomes is essential for cell survival Every chromosome consists of a long DNA molecule that codes for several different pro...
AQA A Level Biology复习笔记4.1.4 Genes
The Definition of a Gene A gene is a base sequence of DNA that codes for the amino acid sequence of a polypeptide or a functional RNA molecule Functional RNA molecules are required for prote...
AQA A Level Biology复习笔记4.1.3 Mitochondria & Chloroplast DNA
Mitochondria & Chloroplast DNA Mitochondria A single mitochondrion is shown – the inner membrane has protein complexes vital for the later stages of aerobic respiration embedded within i...
AQA A Level Biology复习笔记4.1.2 Eukaryotic DNA
Chromosome Structure Chromosomes are made of one very long, condensed DNA molecule associated with proteins (in eukaryotic cells) The main proteins present are the large positively charged g...
AQA A Level Biology复习笔记3.6.8 Tracer & Ringing Experiments
Tracer & Ringing Experiments Tracer and ringing experiments have been used to investigate mass transport in plants It is described as a ringing experiment because it involves the removal...
AQA A Level Biology复习笔记3.6.7 Data on the Mass Flow Hypothesis
Evaluating Data Linked to Mass Flow Hypothesis The mechanism of transport that occurs within the phloem is still debated by scientists The mass flow hypothesis suggests that there is a trans...
