AQA energy and ecosystems
Explain and evaluate the impact of agriculture and the ways productivity has been increased.
explain how the sequence of bases in DNA determine
codon, anti-codon, tRNA, mRNA, DNA, pre-mRNA, interons, exons, protein, nucleotide
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Explain how haemoglobin is able to deliver oxygen
Haemoglobin, oxygen dissociation, protein structure, Bohr shift
A2 nerve impulse assessment
Students are required to explain the stages involved in transmission of a nerve impulse and how this passes from neurone to neurone. It also requires knowledge of factors which affect the speed of transmission.