B3 - Living and growing 0.0 / 5 ? BiologyB3 - Living and growingGCSEEdexcel Created by: ItsAlevelTimeCreated on: 01-01-17 11:39 If a cell needed to respire more it has... More mitocondria 1 of 25 Ribosomes are the site of protein synthesis 2 of 25 Watson & Crick discovered DNA in... 1953 3 of 25 Rosalind Franklin helped Crick and Watson using... X-ray crystallography 4 of 25 Why is mRNA needed? DNA is too big to exit the nucleus and therefore needs to be copied 5 of 25 How to enzymes work? (lock & key) enzyme & substrate -> enzyme-substrate complex -> enzyme & products 6 of 25 Why won't one enzyme work on all biological reactions? Since the active sites of each type of enzyme are the correct shape to facilitate the reaction. 7 of 25 How do you calculate temperature coefficient? Q10 = rate at high temp/rate at low temp 8 of 25 Anaerobic respiration C6H12O6 -> C3H6O6 (+ENERGY) 9 of 25 Why metabolic rate affected by PH and temp? Enzymes 10 of 25 What is the RQ of Glucose? 6CO2/6O2 = 1 11 of 25 Metabolic Rate is... the sum of all the reactions occurring in the body 12 of 25 What does Mitosis produce? Two genetically identical diploid cells 13 of 25 How many chromosomes does a haploid cell have? 23 14 of 25 What cells engage in Meiosis? Gametes 15 of 25 What does the blood plasma NOT carry? Electrical signals 16 of 25 What is the purpose of haemoglobin? transports O2 by turning into Oxyhemoglobin 17 of 25 What is the purpose of a capillary? exchange of substances between circulation and cells. 18 of 25 What do Veins NOT have? Thick Muscle layer in vessel wall 19 of 25 Which heart wall is thicker due to high pressure? Left 20 of 25 Where is bacteria DNA found? Plasmid (in Cytoplasm) 21 of 25 Why is plant cloning easier? Plant cells stay undifferentiated longer 22 of 25 Where does plant growth happen? Meristems 23 of 25 What is NOT an example of genetic engineering? Dolly the sheep 24 of 25 How do we clone animals? Nuclear transfer 25 of 25
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