dissociation curves,starch & plant cells 3.0 / 5 based on 1 rating ? BiologyCellular processes and structureASAQA Created by: rayanne vitaliCreated on: 10-03-13 15:13 what is the structure of haemoglobin and why ? haemoglobin has a quaternary structure as it is made up of four polypeptide chains 1 of 21 what is the role of haemoglobin ? to transport oxygen around the body 2 of 21 what two features enable it to transport oxygen ? it readily associates with oxygen where gas exchange takes place , it readily dissociates from oxygen at tissues that need it 3 of 21 when a oxygen dissociation curve is more to the left what does this mean ? haemoglobin associated more readily to oxygen , becoming more saturated 4 of 21 what are the three main features of a palisade cell? there long and thin , they have numerous chloroplasts , they have a large vacuole 5 of 21 what are the four features of a chloroplast ? the chloroplast envelope , the grana , thylakoids and the stroma 6 of 21 what to thylakoids do ? they contain chlorophyll that is the photosynthetic pigment 7 of 21 how do the granal help photosynthesis ? provide large surface area for the attachment of chlorophyll 8 of 21 how does the stroma help photosynthesis ? the fluid in the stroma possesses all enzymes needed for the second stage of photosynthesis 9 of 21 how do chloroplasts help photosynthesis ? they contain dna and ribosomes so they can easily manufacture some of the proteins for photosynthesis 10 of 21 what are the two functions of the cell wall ? to provide mechanical support for both movement of water and plant as a whole , to allow movement of water through the plant 11 of 21 why is starch important ? because it is a major energy source in most diets 12 of 21 where would you find large amounts of starch ? in seeds and storage organs 13 of 21 what is starch made up of ? chains of alpha glucose monosaccharides linked by glycosidic bonds 14 of 21 how are glycosidic bonds made ? by condensation reactions 15 of 21 what is the main role of starch ? energy storage 16 of 21 how is starch adapted to its main role ? it is insoluble and thus does not affect osmosis and doesnt diffuse easy, 17 of 21 how is glycogen different than starch ? it is much more highly branched and can be much more readily hydrolysed into alpha glucose 18 of 21 what is cellulose made up of ? beta glucose 19 of 21 how does cellulose differ in structure to starch and glycogen ? instead of coiling , it forms straight branched chains that run parallel to eachother 20 of 21 what are microfibrils ? groups of cellulose chains 21 of 21
Chapter 10:The variety of life, biochemical basis and cellular organisation 3.5 / 5 based on 2 ratings
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