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BCHM 561 E2 P6 - Hlo 18[8 Explain why the oxygen-binding...

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Unformatted text preview: Hlo 18. [8] Explain why the oxygen-binding properties of hemoggbin allow it to function well in the transport of oxygen from the lungs to peripheral tissues, whereas the structure and oxygen-binding properties of myoglobin are not suited for this proce s. *Hb «We ”tie bi i mils mans lint when 01 birds in l 0 its W «loaf/Email <96 02-40 Mathew loves becomes more we ,. Jimmie "/0 of 0.2 m it (urge M lOO age (gal @163;st ‘70 in tissues 4+ 20 +0.4: Graph 35* NWo‘mm dgwfijefd Show cooperative bimli became (HMS on&£l subun‘rr it} \oimls 98% 01in s but can only WA mqfi/o 03 .m weal/Efl tissues Gimph tbould show h 1 0i Vi WEI) \C . 19. [6] What effect does theii ding of £,3-bissp os hoglycerate (2,3-BPG) to hemoglobin have on its oxygen binding affinity? 14 \W‘b hWObM‘E) Oz'bifloii/‘éj OthllmiJ'ry ' Explain how 2,3—BPG binds to hemoglobin and alters its oxygen-bnding proqe Ies. imp/6;“ any“; aim/3x 7* 9,3,69Q a... .- u; {a K catASi/‘G ‘03”) 055% / Central cam . 0* lilo is voloie +0, close a um! an Oz MW. 3‘— oilet} a-‘Hm '5ulOUVll’l'S,-to mug”; WW WWW T—9 i?— etolces anal EMBM ciao/meg 035mm] for 07,, 20. [4] Which one of the following statements most accurately describes how a decrease in pH from 7.4 to 7.2 affects the oxygen binding properties of hemoglobin? destroys the ability of hemoglobin to bind oxygen 1&6 the affinity for oxygen decreases C. hemoglobin is insensitive to pH unless 2,3-bisphosphoglycerate is bound, then its affinity for oxygen will decrease when the pH is less than 7.4 D. the affinity for oxygen increases 21. [4] How does the presence of carbon dioxide affect the ability of hemoglobin to release oxygen in % as :EZBYSQ/lce 0? “C02. leads +0 JAM (ammo-Hm o? Manning We mama/wt oi elm/meal (AW/m for/5492 03> Rb is umbig «QWmWT-a am ”“032 Wm“ ~—-% lico; +ll* leoolSlo rm lax; d mm ¢ :0 \l/ on mm abo aim/eases OZCAM’im—N. ...
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