Fibrous and globular proteins 0.0 / 5 ? BiologyBiological moleculesASOCR Created by: dwaynejohnsonCreated on: 02-12-19 21:04 what are the 3 types of fibrous proteins? collagen, keratin and elastin 1 of 14 2 properties of collagen very strong, low solubility 2 of 14 3 functions of collagen? 1. makes tendons to connect muscles to bones 2. makes cartilage 3. in artery walls to provide strength 3 of 14 3 properties of keratin 1. many disulphide bonds 2. insoluble 3. very strong 4 of 14 3 functions of keratin 1. gives physical protection 2. waterproof 3. found in hard parts of body 5 of 14 2 properties of elastin? insoluble, allows things to stretch 6 of 14 3 functions of elastin? 1. helps blood vessels to stretch 2. allows lungs to deflate and inflate 3. stretches skin around bones and muscles 7 of 14 what are the 3 globular proteins? haemoglobin, insulin and pepsin 8 of 14 what is the structure of haemoglobin? 2 alpha chains and 2 beta pleated sheets. with a prosthetic group of iron 9 of 14 what is the function of haemoglobin carries oxygen from the lungs to tissues 10 of 14 what is the structure of insulin? 2 polypeptide chains joined by disulphide bonds. 11 of 14 what is the function of insulin? increase the uptake of glucose from blood 12 of 14 what is the structure of pepsin? one polypeptide chain made of beta pleated sheets with few basic groups to accept h+ ions 13 of 14 what is the function of pepsin. digest protein in stomach 14 of 14
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