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Describe the process of oxygen transport via haemoglobin.

Haemoglobin is a complex metal ion consisting of hexa-coordinated Fe 2+ ions. With 6 coordinate bonds, haemoglobin forms an octahedral shape where 4 nitrogen ligands form a haem disc, a globin molecule forms...
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What is the difference of SN1 and an SN2 mechanism?

SN1= only 1 species involved in the rate determining step = carbocation intermediate = racemic mixture = not optically active SN2= 2 species involved in the rate determining step =transition state = single o...
HS
Answered by Hannah S. • Chemistry tutor
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What is the structure of DNA?

DNA stands for deoxyribonucleic acid. And what is DNA? Well, it’s basically a carrier of genetic information. DNA is found in all cells, and it contains the information needed for cells to live, to grow and ...
MS
Answered by Molly S. • Biology tutor
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Evaluate the Behaviourist approach to psychology

Outline a weakness - it relies on animal studies Give evidence - Pavlov, Skinner Explain - this makes it difficult to generalise to humans, lacks ecological validity Link back - this makes a weakness of beha...
JL
Answered by Jack L. • Psychology tutor
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How to balance equations?

Balancing equations is making sure that all atoms, ions and charges have the same count on both sides of the equation. We start with checking metals, hydrogen and lastly oxygen and charges. In order to balan...
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