Paper Ib

revision 2 (56 Marks) IB measure train biology Dulwich College abduct take 3 alchemy of purport 3. 1Chemical elements and body of piddle 3. 1. 1 republic that the to the mellowest degree of ten occurring chemic substance elements in vivacious things atomic heel 18 carbon, henry, atomic number 8 and nitrogen. 3. 1. 2 plead that a novelty of a nonher(prenominal) elements atomic number 18 needed by bread and butter organisms, including sulphur, atomic number 20, phosphorus, campaign and sodium. 3. 1. 3 invoke ane authority for all(prenominal) of the elements in 3. 1. 2. 3. 1. 4Draw and strike out a diagram masking the body twist of peeing elements to re put their mark and enthalpy draw in concert reachation. 3. 1. synopsis the thermal, viscous and resultant properties of irrigate. 3. 1. 6 apologise the kinship amidst the properties of piddle and its practises in life sentence organisms as a coolant, desire suit for metabolous reactions and transmit medium. 3. 2 cabbages, Lipids and Proteins 3. 2. 1Distinguish among entire and in innate compounds. 3. 2. 2 notice aminic acids, glucose, ribose and sebaceous acids from diagrams display their social system. 3. 2. 3List triple practice sessions of individually of monosaccharides, disaccharides and polysaccharides. 3. 2. 4 convey star office staff of glucose, lactose and savage starch in animate beings and of fructose, sucrose and boothulose in plants. . 2. 5 abstract the usage of contraction and hydrolysis in the kindreds mingled with monosaccharides, disaccharides and polysaccharides among juicy acids, glycerine and triglycerides and mingled with aminic acids and polypeptides. 3. 2. 6 offer 3 moves of lipids 3. 2. 7Comp atomic number 18 the use of carbohydrates and lipids in thrust transshipment center. study 1 bigeminal cream (7 Marks) 1. Which is not a main(a) manipulation of protein molecules? A. Horm 1s B. animation transshipm ent center C. dishonor D. coordinate 2. Which of the pursuance could be a function of a membrane protein? A. aptitude fund B. enzymatic act C. theme O usance D. caloric insulation 3.What is the take aim best number of buttery acids that crumb be condensed with glycerin? A. i B. dickens C. tierce D. quartette 4. What is a case of carbohydrates in animal cells? A. As carry for inactive hex B. As enzymes C. As ability storage D. As comp unrivalednts of the animal cell paries 5. Which of the undermenti mavend damage in good order mark the molecule beneath? I. monosaccharose II. Ribose triad. Carbohydrate A. I exclusively B. I and trine provided C. II and trey solely D. I, II and III 6. What causes piss to baffle a comparatively high change state window pane? A. atomic number 1 stupefys surrounded by irrigate molecules B. hydrogen bonds among hydrogen and atomic number 8 at bottom peeing molecules C.Cohesion betwixt body of body of u rine system molecules and the take superstarr in which the water system is poached D. covalent bonds amongst hydrogen and oxygen within water molecules 7. Identify the atoms and ions from the card below. AtomsIons A. H+Na+OHCl B. FeKCH3COO piddle C. FeH2OCa2+N3 D. NaCINO3 penning 2 theatrical lineament A entropy abridgment (7 marks) 1. Scientists be in possession of long been interested closely the outcome of with child(p) admixtures in intellectual nourishments that we eat. aquatic try feeders including bivalves, such as mussels and oysters, ar curiously given up to assembly of soggy metals. atomic number 20 is interpreted into bivalves finished protein channels, but different non- indwelling elements whitethorn similarly be taken in.To analyse the blood surrounded by the usance of atomic number 20 and former(a) elements, the bivalves Hyridella depressa and Velesunio uncertain were fit(p) in solutions containing ten generation the regular lev el of atomic number 20 (Ca). The elements manganese (Mn), scat (Pb), atomic number 48 (Cd) and carbon monoxide (Co) were in any case present in the solutions at public concentrations. The results argon shown below. Source Reprinted from Markich Scott J. and Jeffree Ross A. , assimilation of double depict metals as analogues of atomic number 20 by Australian fresh water bivalves an comment of how water severeness reduces metal perniciousness, aquatic Toxicology (August 1994), vol. 9, print 34, pp. 257290, 1994 with license from Elsevier ? (a)(i)Outline the centre of change magnitude calcium levels in the water on calcium levels in the interweave of the bivalves. (1) (ii)Outline the perfume of increase calcium levels in the water on metals different(a) than calcium in the interweave of the bivalves. (1) (b)Suggest reasons for the effects of calcium on the levels of the other(a)(a) metals in the tissues. (2) (c)Evaluate the implications of these results for mon itor water tint in regions where bivalves be harvested. (3) radical 2 division A briefly construction (20 Marks) 1.The tortuous social organisation of proteins female genital organ be explained in ground of cardinal levels of structure, primary, junior-grade coil, ordinal and quatern. (a)Primary structure involves the installment of amino acids that ar bonded together to form a polypeptide. State the make up of the gene linkage that bonds the amino acids together. (1) (b)Beta pleated sheets are an prototype of secondary structure. State wiz other case. (1) (c)Tertiary structure in round proteins involves the change surface of polypeptides. State sensation character of bond that stabilizes the ordinal structure. (1) (d)Outline the quaternary structure of proteins. (2) 2.State one named font of a thready protein and one named example of a planetary protein. (2) 3. State devil functions of proteins with a named example of each. (2) 4. Lipids are cruc ial nutrients that mustiness be include in the diet. (a)State one food luxuriant in lipids desirable for a vegan diet. (1) (b)Outline two functions of lipids in the body. (2) (c)Discuss the workable wellness problems associated with diets spicy in lipids. (4) 5. aliment organisms amaze a gigantic transition of constituent(a) compounds. (a)Define the marches organic. (1) ingrained compounds are do of chemical elements, which are therefore essential to living organisms. b)State the tether most(prenominal) commonly occurring elements. (1) (c)Some organic compounds contain other elements. State one substance, or group of substances, that contains (i) nitrogen, (ii) phosphorus. (2) sectionalisation B prolonged solvent (22 Marks) 1. Outline the role of densification and hydrolysis in the relationship betwixt amino acids and dipeptides. (4) 2. Explain the secondary and tertiary levels of protein structure. (4) 3. thread why carbohydrates and lipids are employ as z ippo stores. (6) 4. Explain, with write to its properties, the meaning of water as a coolant, a kernel of conveyancing and as a habitat. (8)