35 Multiple Choice Questions on Principles of Biology II - Study Guide | BIOL 1107, Exams of Biology

Download 35 Multiple Choice Questions on Principles of Biology II - Study Guide | BIOL 1107 and more Exams Biology in PDF only on Docsity! /Examl -|anuary 25,2W /t / BIOL 11.07 - DerVartanian 1) At what temperature is water at its densest? i A) 0"C B) 2t2.C. C) 32"C * t 2) Ice is lighter and floats in water because it is a crystalline structure in which eadr water molecule is bonded t";;;;;of four other water molecules bywhich kind of bond? A) covalent' B) hYdrogeh C) ionic "' D) Aand C onlY ' E)A,B,andC i D) 1oO'C H "lH-C-H H-c-c-c-HlllHHH Spring 2008 1)F 2)D E) 4'C 3) Which of the following statements iscnnpletely correct? A) NHg'is a weak base, and HCI is a strong acid' B) HZCbg is a strong aci4 and NaOH'is a strong base'' C) H2CO3 is a weak a1$, and NaOH is a weakbase' pflfHg is a strong base, and HCI'is a weak acid' ' E) NH3 is a weak base, and H2CO3 is a strong acid' 3)L 'E HHHHllllH-C-c-c-c-HllllHHHH H I H I Figure 4'1 . tu.- The two molecules "h; in Figue 4'1 are best described as A) radioactive isotoPes. B) nonradioactive isotoPes. C) structuraf iso. mers. D) optical isomers' "E) geometric isomers. . , $r 4) olt D_CIl . l\r \o-H t. Figure'4.4 si what is the name of thd functionat &t'op tltg* in Figure 4'4?. tr q\ ce - A) aldehyde Bfcarboxyl C)ketone 6) Which two functional groups are alwaysfound'in amino acidb? D) hydroxYl E) carboni'l A) PhosPhate and sulf,rYdryl B) ketone and aldehYde C) carboxYlandamino D)hYdroxYlandaldehYd"' "E) caibonYl and carboxYl TIu following questions refer to the rnilecules shoatn in'Figuri 4'7 ' A. B. t '. t (Questions" 7-13) .. c. LtqtllH-c-c- I H 6)L E\/)L ' 8) A -'- 9\a. -t ,) E)EandA'1 L0)'r ,; 11) a L2) D 13) b H; Ic-H I Fi ; Figure 4'7 which irrorecde G water-soluble because it has a hydioxyl functional group? Whichmolecutdisanalcohol? ' * Which molecules contain a carbonyl group? A)AandB B)BandC- C)CandD D)DandE 10) Which molecule has a carbonyl functional grouP in thie foqm of a ketone? 11) Which mole'cule has a carbonyl functional goup itr tni form of an aldehyhe? ' tz) Wh,i.l't molecule contains d carbo:rryl group? r 13) Which molecule can increade the concentration of hydrogen ions in a sofirhon and is therefore an organic acid? ' ' E. lH' n-E-1t\ *-" 7) 8) g') A-2 A.-8. C. D: E. Figure 5'6 23) At which bond would water need to be added to achieve hydrolysis of dre peptide' back to its componmt amino acid?, ". 24) which bond isclosest to the N-terminus of the molecule? 24) 25)whichbondisclosest,totheC-terminusofthemolecule?.25) 26) which type of interaction stabilizes the alpha (a) helix and the beta (F) pleate'd sheet structffes of 23) C tr 26) i: 't proteins? A) ionic.bonds B) hydrogenbonds C) nonpolar bovalent bonds D) peptide bonds E) hydroph6bic interactions 2T) theo helix ahd the B pleated sheet are both common polypeptide forrrs found in whidr level of a)A protein structure? A) secondarY B) primary C) tertiary D) quatemary E) all of the above . Figure 5'7 28)'Figure 5.7 shows the $, A) 1-4 linkage of the B glu"cose monomers of cbllul6se' B) 1-4linkage of the cr glucose moiiom"ts of stardi' '' C) double helical structure of a DNA molecule' r I,D) F Pleated sheet'secondary stru-cture of a polypbptide' ' E) crhelix secondarystructure of a polypepide 't; 29) Figure 5.7 best illustrates tlre A) tertiary structure of a polypeptide' B) secondary structure of a polypeptide' C) quatamarystructure oia protbin 1 ! "" D) primary struchre of a polysaccharide' E) doublehelix structure of DNA' 30) The tertiary structirrb of a protein isthe A) unique three-dimensional shape of the fully folded polypeptide' p) bonding togethei of several polfueptide drains by weak bonds' c) overall protein structure resulting from the aggregation of two or more polypeptide subunits' D) order in which amino acidsaie"joined in a polypeptide clmin E) organization of a polypeptide chain into an c helix or p pleated sheet' - ", .28) E "29) r< so) ^ .6 3L) At which level of protein struchrre are interactions between thq sidg chai4s (R groups) nost 31) n' important? A) secondary B) tertiary C) primary D) quaternary- E) all of the above 32) AI of the following molecules are proteins except f I 3De A) transthyretin B) collagen- , C) lysozYme. " ,D) hemoglobin ' E) glycogen F 33) what is the term used for a change in a protein's three-d.imensional shape or cori{ortnation due to 33) t7 disruptionbf hydrogen bonds, disulfide bridges, or ionic bonds? A) destabilization B) denaturation j , C)renaturation "'' * D) stabilization o ' E) hydrolYsis 34) What is the temr used for a protein molecule that assists in *re proper folding of o*rer Proteins? 34) h , , A) draperonin B) enzYme Protein C) denaturing Protein ' , ' D) r"nat tring protein , . E) tertiirY Protein 35) Of the following functions, the maior PurPose of RNA is to - 3s)E A) forrn the genes of higfuer organisms' B) Eansrnit genetic infolrration to offspring' ' C) make a copy of ibelt thu-s ensudng genetic continuity' ' D) act as a Pattern or blueprint to form DNA' ,' i E) function in the synthesis of protein s 36) Which of the following descriptions best htsthe class of molecules known as nucleotides? 36) V A) a pentose sugar and a purine or pyrimidine B) a nitrogenous bdse, a phosphate group,2rnd' a pentose sugar "C) a phosphate grouP and an adenine or uracil D) a nitiogenous base and a pentose sugar E) a nitrogenousbase and a phosphaG group I ,i.l