Question 1. (a) Name the following : | (i) The layer of the eyeball that provide nourishment to the eye. (ii) One gaseous compound which depletes the ozone layer. (iii) The structure which connects the placenta and the foetus. (iv) A pair of corresponding chromosomes of the same shape and size and derived one from each parent. (v) The compound formed when haemoglobin combines with carbon dioxide in blood.
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- Question 14 a) Radioactive decay produces ionising radiation. Like all ionising radiation this can lead to harmful effects on living tissue due to cell damage including damage to DNA, mutation and cell death. Contrast the differing health risks associated when working with alpha, beta or gamma radiation sources. b) Describe some ways in which those working with radioactive sources and people in general can be protected against the risks of radiation exposure from such sources.What is the Krebs bicycle?What is the Warburg effect? Whywould cancer cells favor such inefficient metabolism?
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