Biology where I went wrong 0.0 / 5 ? BiologyBiological moleculesASEdexcel Created by: francesca_321Created on: 20-05-15 18:48 Individual mononucleotides are joined by what? phosphodiester bonds 1 of 28 What does a mononucleotide contain in RNA? A base, phosphate head and ribose sugar 2 of 28 What happens to proteins when they are with ethanol? They become denatured 3 of 28 What happens to phospholips? They dissolve 4 of 28 How can modified stem cells result in the prevention of MLD? Normal protein is produced, copy of normal gene in the cells 5 of 28 Why can somatic gene therapy be bad? Risks are not known 6 of 28 What is the heart muscle in the wall of the heart called? Cardiac muscle 7 of 28 What valve controls the flow of blood between the chambers of the heart? Atrioventricular 8 of 28 What chamber receives oxygenated blood from the lungs? The left Atrium 9 of 28 Deoxygenated blood is transported back to the lungs by? Pulmonary artery 10 of 28 What stops backflow of blood into the heart? Semilunar 11 of 28 What is one difference between capilary and artery? The capillary has no muscle and artery has lots of muscle 12 of 28 How do anti-coagulants prevent CVD? Reduce the chance of blood clot formation which keeps the blood flow in arteries normal 13 of 28 What is definition of correlation? One variable changes there is also a change in an accompanying variable 14 of 28 DNA consists of mononucleotides joined together by bonds between? One deoxyribose sugar and one phosphate group 15 of 28 The three dimensional sturcture of a protein is held together by? Disulphide bridges, hydrgen and ionic bonds 16 of 28 What carries oxygenated blood away from the left? Aorta 17 of 28 What is the definition of biological catalyst? It speeds up the rate of a reaction but is not used up or affected by the reaction produced by cells 18 of 28 What is the definition of activation energy? The minimum energy needed to start a reaction by increasing the number of collisions 19 of 28 What does a vector do? Introduce the gene into the cell 20 of 28 what is the bond called between a glycerol and fatty acid ester bond 21 of 28 what is amniocentisis? amniotic fluid withdrawn when the feteus is 14-16 weeks the fluid and fetal cells seperated and the cells are grown in a dish, the cells DNA analysed 22 of 28 What is the role of mRNA in protein synthesis? A copy of the antisense strand of the DNA 23 of 28 What is it used in? Translation which binds to the chromosome 24 of 28 What does tRNA? This translates the code on the DNA 25 of 28 What does it do? Attaches to amino acid, tRNA binds mRNA and tRNA binds amino acids together 26 of 28 Why does carbohydrates could lead to obesity? Carbohydrates providing a source of energy 27 of 28 Why else does it lead to obesisty? If the energy input is greater than the energy output weight will be gained 28 of 28
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