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AQA A Level Biology復習筆記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?(...
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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...
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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復習筆記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復習筆記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...
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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...
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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...
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