bild1midterm1fall2003schmidt

bild1midterm1fall2003schmidt - HELD l, Midterm #I Fall 1W3,...

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Unformatted text preview: HELD l, Midterm #I Fall 1W3, Schmidt ' Page 2 1. [A] [3 pts]: An element has 3 eleotrons surrounding its nucleus. How many protons does it have? E Hols.r many bonds can this element form with a hydrogen? 2 What is the name of this element? {Excess B} {4 ptsj Carbon and nitrogen are very important elements in living systems- Home two Mbiologicelly important groups of macromolecules commonly containing carbon and nitrogen and indicate of what monomers {subunits} they are composed? flood-s sic—rd ens-s semester; m, I C] [2 pts] 1Ih'hat type of reaction ts used to form biological polymers? t: soggy-gs: {1 D} {’3 pts}Wl1ot typo of reaction breaks down polymers? _H:Em Egg 2— E} {1 pie} During the synthesis of an 111—4 licked glucose polymen is entropy increasing or decreasing“? EEeemsiMs , How do you Fen ow? piss-megs: sow-cc” Mel-Ecru. so’ yea-F fists-e Jew-so 3”" We“? ‘5 WT”? j} .. _,d__ Nee-fl-fl—fi {J.-. min-1.»? Jon-H11! I'd-5:: ' F} {4 pts] The lhIoo molecules indicated below can be generally classified as what type of g ' organic molecule? Cassia-smash - J'trE they hydrophilto or hydrophobic stlbsta aces? - o) W" oils“? ‘ HF: 1 x 5 1j'itsSJ-Iw . D Hoot-i; D can” Ill-(I'er ss old a 3' rem.- x" a I li-ll:-r--=3hl on H C'H DH E'H‘ Hr (Er-flit so i “H as“ it {rat (a (159 ” so: [2 pts} Indicate one major structural difference between ribnse and glucose? 1! C I [E pls} Got: ot' the three molecules (I. 2 or 3} is ribose. lndieate which one i G} {4 pts} in the space to the right above. draw an 11 Hi linkage of #1 and #1. BIL-I} 1. Midterm #1 Fall 1003, Schmidt 1 P332 3 3L Answer the following questions about this molecule: Ii H-Q— o—a-esyfisJ-c or: {ii i arose-Eresffeal 4+5 “F H 'C. ‘ Cl - {ii—cry r Q3: lye-fl} A} {3 par} Name this common cellular molecule? Earng in? E) {2 puts} In which of the four major groups of macromolecules does it belong? .-"__ . Law: C} (3pm) Name the three smaller organic molecules from 1arrh'teh this molecule is made. __.. "or" .-" m I'll-HT? aflle DJ {1' alts) This molecule is 3 very important component of all DEW" Ill-“ME Ly 5-“ -r:. 11 r.- E} Hers} When this molecule is mined in water it can form a bilayer. Describe the properties of this molecule that promote hila er l‘ot-rnation‘.ll f”. ______.r- We: - ore—roe fished-so oil! soaowmmeaea' .. ae'sttrt— ‘ fiiflsék'o sr.ssos£§? F} is tars} Rattails arr—d Gharahaldis are both'fish' indi' enous to the waters off San Diego. The Rattall is found in cold. deep. offshore waters w ile the fiharahaldi litres in the shallow coastal regions. [f you were to analyse the membrane liplds of these two fish. what sort of differences would you expect to find the specific] and why'ir aw @tomWoaws sit-L (Wyooowfmom 4, L1. MWH}, DEA, é?” *- 1.;fimfifimwfigfisjgfl .—— —-. . —|.._\‘ _- 'b r: l? Extra Credit [3 pts—no partial credit given] Biological membranes are typically composed of phospholinids with carbon chains that are _' 1st s carbons long. Why ts-rs carbons long‘l' What would he the consequence of a ' membrane being composed, instead. of phospholipids with fatty acid chains that are E carbons long or fill carbons long'iI (Note; stating "they will not function" is not valid.) _ _fLJ-fll-‘l' sitesogu‘ilaelf 3 BILI] l. Mfdlerm iil'l Fall 2M3, Schmidt Page 41- 3. {A} {3 pts] (limb: and namfi the Funfliunai gmups present in this mflificubc. W M . I: . ..-"" II 0%“. H ' F“ 4' "’ II | H .91 C - C - C - r _ I 613. II B} {2 pm} If ynu had a sniutiun {if the above campuund in water. wuuld yougycct its pH up in: grammar lesser lh_un "LU? Why? __12;“ lgiéfigarfi }_ __ {IF-3' ll -— I I I —-— 1H5". #2:": III-'— C} {2 p15} Tu remove: car grams: fmm his hflndfi. a mhanic lakes a Iahlespmn inf bultcr and works it intn the grease m1 his hands. Why dares I113 butter efficiently mix wi1h Iii: car grease? Jr 1 flap; 4.“— mm 331% m M $ F3 “Ft-'5' m filler W Jib-GE: . D} {4 } If in: nuw runs water Din-tr his: hands. will the car gram: bu carn'cd away dawn Ihi: sin 'E' Why ur why nut? E} {II pts} The shun DNA mulecule "A" buiuw is 1:55 stable than "B" fie- mnIBEule "A" dififiucialcfi imo twin separate pnlynuciemidu chains at :l iuwer temperature lhflfl dEI-EE ‘13")- Dficr an ciplflnfiiiflli fur why Ihis is so. A E 5'—A‘l'i'I‘ATI'E-3' 5'-AGEGCEGT-3' 3'—TAAATAAG—S' Ei-TCCCEGCA-S' mfir‘wflmwméflgfiz M ' i "as .-" .'|__.r-* Lt EILD l, Midterm #1 Fall zoos, Sehmidt Peel: 5 4. The Abolone is a moluse that lives in the oceans. Lysin is a protein that is released from the ttbuione sperm when it reaches the egg. The primary sequence of this protein rot-reels a long hydrophobic region followed by a hydrophtlic region. The secondary structure reveals many Its—helices. gt} [1 pts) What stabiliaes the rt—helis strueture'? B]: to pts} Giye the harp/gs of three amino acids you might expect to fine in the hydrophobic F” "in" wilti— itfl‘ii“ ‘ w;— Dfl the some for the hydruphiItE streteh. lira-retiree J lpsm-e'. flfflcnfi Hie-w C} {4 pts} Lysin is naturally found as a dimer. meaning there are two subunits bound together. Name the types of forces {bonds} that lilter hold the ot and fl polypeptide ehains together? HpuM Bit-1 pts] Eiyen that fertilisation in abalones ooours in the water. would you espeet the hydrophobie portion of the protein to be along the outside or inside of the soereted _ protein? ‘li-‘vt"h:,.r'?I fiwfifirgmfip m? For. W flan-1 5. [A] ['5' ptst Wn‘te in the complementary strand of the DNA molecule below? Be eertain to indicate the 5' and 3‘ ends. 5'43 fit A T T E h T G G G A T T A tit-3' 31a: Tr'dfi e. T», e: 1": tires-+125? i ii r W -I 1'. j it how many hydrogen bonds are stabilising thts double stranded structure? 3? ii] how many phosphodiester bonds are there in this double stranded structure '? fliL—gg f 4- — g -I u 4— {B} [E ptsj Given the protein NI-Iz-si‘ti‘gln-his-stsp-phe-Iys~rnet-Etrg-CCIJH +11 1'} What is the net charge of the protein in water at neutral pH? 3* . ii} whieh or the amino acids in the polypeptide above are; char ed hrs of lit-s e“- ? oer s _._._LJ__J_,":_.__J_Jr x Fir '1 for M Ire + ‘_i' iii} how many peptide bonds are there in this protein'.i E '] '1' BIL!) LMldterlIfl Fall HIS. Schmidt Page '5 ii. {A} [Ii ptsi Cheese stitcrtg the fcilcwing amine acid side chains tc drew the foilewing di pcidc; GLTSINE-SERIHE indicate the artinc and car m In" "nus. gen-ta, {mm-ting, {II-Ing 411-13, In fizz-«am [B]: {4 pts} Based en ycur understanding cf chemical hcncI fcnnaticn, which [if any} cf the tart: antlnc acids in the dip-entitle might farm a enualeettt hnncl tc phcsphttte? saw (C) (4- pts} If a phosphate were attached In this dipeptirle 1what effect wculd this have en the charge {if the dipeptide in an aquccus scluticn at neutral pH? Mai-fir?- ‘i'. {14 pts} Frtr each cf the i‘itllltittringr circle the best answer. Each is weth 2 pints. 1. Which of the fcfllcwing mclccules is NflT s mnnmneri' a) frttctcsc h} gluccm c} amine acid cl} clthP rein 1. Which cf the fellcwittg polymers cannnt he di by humans? a) h'iglyceride h} nucleic acid c] pmtein Ilulcse e} starch Which cf the fcllcw'tttg cculcl have the hi fittest ntclc-culer weight? a)- lypeptltie h} glycerol c} sucmse d] amine acid c} nuciectille «ll. Which cf the fcllcwing mnlecules has tlte greatest number cf ' it stems? a} gluccsc iii-515ml. c} alanine dHetty-eeiflr uclcctitle 5. Which cf the fcllcwing is HUT fcmtcti hjr a ccntlensaticn e.- um ‘i' aJDNA e1 lactnsc c}triglyceride d}l”prcteit1suucture 'pmtlein structure ti. Wltich eukarych cell structure presides cell shape and makes possible eel] ntctrement? a} ytcsiteietcn h1gclgi c} mitnchcndria clJElt c} eelinrali 1ADI~Utmnlaculeiseaalyzeflandlflficfall hesesarehdeninct‘flt'hatpercemagecf mmmumitt niece attest niece niece @mstsepmmstng EILD' ll Midterm #1 Fall 1003. Schmidt Page 'i' E. {M Eli} pts] Where weuld you find the fulluwing‘? EPtent Cell. 45- Anin'mJ {EILE— Pmlstu'setie |[Sell [place the Ietterts} nest tn the indicated structure}. |_.P_____ ‘u’neunle JA— Plasma Membrane -.‘Lfi_ Nueleus -E__E_ CellWall 1 s, I 3 Fe tideglsesm titan“ _ Gfllsi _ .5 5 fl Ri use-mee id .IE Chstlere last I a .E Mituchnndria 3 E Circular HA. E] {IE pm]- In the space presided near each indiesled cell struetute. state in; majer funelifln in a single sentence- a} mitnehendfis WWJ—EW ATPfi-rmflfiflqf_ _- fi'fig‘fi MW-éfiwa; 'svfii-Lfifiw ejnueleaiue d} plusme-desm ——-— — _ Hi: f a/ Jew I e} eytnslteletnn ' ' — "3" swmwfiwkaflwwefime (Mfmmswfl‘lwm W {Le Maeixeeussee {Hrs gr M fi/egseeet if H sflisiaseamws flflfigflmsw EILD l, Midterm #1 Fall 2M3, Sehmie‘ll Page 3 '5‘. Pt} “I pts} In the space previeled below. graph the kinetics eaeh e-rtrnpetund weuld sitth ere-ssng a eel] membrane. Assume simple diffusietn fur CD} and facililaleti diffusie-n fer the lranspert lat" glueuse set t) 2,, [Le 11*? Cslhmttflfi Briefly explain yrmr reasnnlng Fur eeeh graph. first: ;. EL meat? ,5. Mwfl’irfi «33 WJ_'“~-q—i—Lf e” ee, es. esteemed. Free“: We?!" -. efifleww 3"“ W em“ Eh f TpMfl-hm; Jim-#41513 magnetism-fidu- ___ BIS ItLe} Assign the meet enrreel letterts 1-‘mnt-t. Lima E. tn ettlunin A- Mere than ene letter freni celttmn B may apply In L‘llL'll term in eeltln'rn A. Leliere frurn L'ulult'tn B may lit: used mun: IIItJJt ence In eulumn A. J_ r We. _ I flelutmtfl E Faellltaled Dlfi'usten .43, M+ purn -- I' nemesis Hemmeeress membranes withrtut using proteins A L' t r Primary hetij Trampnn Char-'FP-is-hydrnlyzed fl :' i Seertndary AeriiteTrattspnrl D. Requires the energy in an eleetrn—ehemiesl gradient 5 E 1: i Simple rJ-ii't'tlsintt E. Reliee nn free energy rife enneentralinn gradient ‘FrHea-emem ei water tiltl‘flfifi a merntnstte rewards In higher eeneentraliun rif' impermeable Hilllttfi E] [5 pls] What is the runs! liker mechanism by Which each In! the I'ellrtwing substances enter eelts: {cheese item the Ierrns it: CUILITI'iI'I A1 eheve. if more than ette answer eetllrl apply. list herb}. a} Ethanel h] Alanine e} Frueteste d) Hal—.1 e} Eli L'llifi pls} Fer eeeli et‘ the t'ellrtwing eirele the '1'“ er 1-" fer true er false. F A. selutien at pH 4 is lflfl times mere neitiie then a solution at {ill I. h} .(fiyifimrding let the fluid-meseie mettle! el‘ membranes. integral mbrarle preleins tl-u heir. I‘rle'i'e Ittteraliy. e] T- J,- Memhrene prrileins that funelirtn in active [runs-purl ere lit-ter he be peri pherel preteins. rig; F. A reaetien can enter spentanee-usly enly when M] is negative. e F. When ee=n the system is atequilibriuni. F} J F. Allenzyrnesareeritalysls fllLD l, Midterm it'l — Fall 2W3. Schmidt Page 9 lilttfit‘i {4 pie} The liydre-iysis et' ATP In ADP and free phtispllete has e at] el' 4.3 Keniimele. in the fig-Elm: beitt'it' sli-Liw i111 energi.r diagram for the renetieln tutti indicate PI'IeIdLieta.1 Resetai'its. M} and E1 is 1* 'i.1.L :i that g; ' -—~——-+ - FrflEr-ILEJ n-l- Ran-Ii?“ El} Fl- pts} [I' the resetiein were eiieym eiiteiseed, indicate an year diagrnm hnw the t‘un'e weuid change and label jibur ehange “Enzyme Cntaiyled". In the absenee til" the enzyme will the lie-aetian prureed'WIi‘Ii-rhyntwliynet? £- ' if!!!“ i I I“, $5. . _ ____ it; flew «‘36 474*- . esteem-u “#33;- ii” “3%.”??? Jr'eiK E. . __ __ Ci {2 pts]: While studying this Imieess. yea ebser-ie that die rate at the enesrme-eatalysed renetien in "A" is much faster at a pH elf "Ml etunpared 1:: pH t'i. Why is this the ease? 11mm see same, .. t“ ' were is: . Fl" Rakiiigg " _____ _ _ __W .- .l D} {4 pts} Tite i.1 tub-t: below is divided bite twn halves, A and E. by a membrane that is freely penneebie lei water and gleeese but HGT suetese. Side A is filled with a seliitieri ttf 2 M suerese and | M glueese. Side l3 is filled With it sniutien til [M suerese and 2M gluense. What will be the enneentttitt'nn bf gliieiise in side it when the system eentes in equilibrium? a _._ l- 4; “i r”? F‘s 1.1] M Glueeee 2.13 tut Glueese at: M Seer-see 1 .d M Sucrose 346+ 41’ membrane E} {4 FILE} What changes In the levels int" the fluids on side A and E Iwill gnu observer 1when equilibrium is reached and why tynlir answer shnuid—indieate the name .nf this 39% prneess]? L1,.“ must...“ Ewe: same ,_ smite, 52....“ e434 5 new raw-w es mrw es 3% es, w I: rm FE fiéfiwsmenfifig i: '\—i_ _—— —_ _l— ...
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bild1midterm1fall2003schmidt - HELD l, Midterm #I Fall 1W3,...

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