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B150MT1Z00 - r W" Bll 150 as 2000 Test 1 pg 1 BIL 150...

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Unformatted text preview: r W " Bll 150 as 2000 Test 1 pg 1 BIL 150 Mallery - Test # 1 May 31, 2000 lb BEST f th h [I #66 CC £174 I. Choose e answer rom among e c oioe given. {Were , Cl'rc/ec/ mesa/er: A ca/rec/ /,Z/ l) The smallest portion an atom; the part is i has the littlest mass of an atom, is? a) molecule y/Qlectron c) proton d) neutron e) none of these is correct 2) Covalent bands a) form only between non-identical atoms b) involve the complete Transfer of electrons from one atom to another @nvolve the sharing of electrons between atoms 4 1 1 a 6. c only are correct u re m e e) none of the above IS correct _______ 1. :é’m 3) Which of the following properties of water is properly matched with its correct definition? a) adhesion - the tendency of unlike moleCules to repel each other : __,-.-%)cohesian — tendency of water molecules to hydrogen bond and attract each together ' c) capillary action A the tendency of water to vaporize d) surface tension - the hydrogen bonding of water in ice e) choose this answer if not of these is correct 4) True or False. Water's heat of vaporization, specific heat; cohesion, cohesion and capillary action re5ult from watei‘s extensive hydrophobic (fatty like) interactions between molecules. a) true e 5) True or FoISe, A buffer is a substance that resists changes in 9H. m- lo) false 6) To be a_ll¢dlo\rganic" a compound must contain ? ®' in) carbon 6: oxygen c) nitrogen; oxygen as hydrogen d) none of the above 7) Whichfi 1 allowing is a specific example of a biological polymeric molecule .7 m b) lipid c) monosocchoricle d) Nutra5weet e) none of these 8) Glucose ? a) is o pentose sugar b) is an isotope Kc), is a hexose Sugoa d) is a polysaccharide e) choose this answer if none of the above is correct 9) Cellulose—oungon'iylos . ' «Tar; polymers " b) are polypeptides c) are polysaccharides a d: c only e a nose t is answer if none of the above is correct 10) A phoSpholipid mole lee ' 'ch of the following? a) a steroid ) two fatty acids c) glucosa d) a 5 I: only e) ab, & c 21) The bond that links two glucose molecules together in the iso horide maltose is called ? a) a hydrogen bond b) a condensation bond in a glycosi-clim d) a peptide bond ' e) a James Bond \-——--""J 12) True or False? An enzyme increases the rate of the reaction A ——> B + C by changing th energy content of both the Substrate and the product. a) true ) false “I- 13) A scientist hypothesizes that drug X will prevent hair loss. She designs an experiment giving mice in group 1 a normal diet without ug X and mice in group 2 a normal diet with drug X. Which group is the control group? a) group 1 b) group 2 c) there is no control group 14) A hypothesis which. over a long time becomes supported by a lore . ' oz of observations and experi- mental evidence is often called a? a) placebo b) law @ d) none of the above 15) Which of these is (are) major unifying concept(s) of biology? a) that cells u5e the same laws of bioenergetics to function as thelaws of the physical universe b) the theory of evolution b) the Cell theory /d) all of the above 16) Theory that life may have arisen by the Sc i of_Earth via meteorite bombardment is") a} Special Creation b) Evolution c anspermna d) none of these 17) In the current theories of chemical evolution, whi otobionts or amino acid monomers? a) amino acids came first .’ b) protobiants came first c) neither came first 18) An Obs ' ' with? G)? gathering of data or fa a genera nation or premisa about some facts c) a hypothesis that has been disproved d) a scientific principle not able to be disproved by experimental teSting e) none of these is correct 19) The intro—cellular site or respiration and gas exel'lclnge (CO: releaSe c 02 uptake) is? a) nucleus mitochondria c) chloroplast d) cytoskeleton e) none of these 20) Biology 150 is required of all college students receiving a baccalaureate degree. You are a college student, therefore you must take Biology 150. This is an example of what of Scientific reasoning .7 a) deductive reasoning b) a theory w ._.\ e none 0 theSe 21) Which of the following statements is (are) correct? a) all cells contain membranes _ __b all i ' b) all cells arise from prevexisting cells K" d) choose this answer if all of the above are Correct w 22) There are very unique and‘SP-eciai laws of chemistry and _ ' s, which are applicable only to living cells. and no other forms of matter? a) true b) false 23) Which of the following sequences is in the most correct arderaf increasing complexity? @ ell ——> tissue ——> organ --> organ System .) macrornolecule "l. atom ——> cell --> organelle c) population -v> ecoSystem __, organism ——> community d) cell v-> chemical -—) organism -- > tissue e) chooSe this answer if none of thesa is a correct sequence 24) A m 12::qu atoms held together by energy in the form ? fihemicol bonds b) electrostatic repulsion c) enzymes :0 none of these is correct lg till 150 [est 1 — Summer 2000 pg 3 25) Arami'c number is the number of ? Z __ a) electron preSent in an atom b) neutrons present c) protons present ) d) neutrons + protons e) choose this answer if none of the o 26) Th -, dun ' _. . made by 2 atoms. each attracted by the opposite electric charge is called a(an)? b) covalent bond c) hydrogen bond d) o d: c only e) none of these 27) Cellulose is a polysaccharide, made of many glucose units, in which the bond between them has a different orientation than the same bond between the glucoSe molecules which are linked together to form the paiysaccharide, starch? b) false 28) The physr'caa/properfyof water most responsible for the many properties of @luding its surface )frue ' tension and heat of vaporization. is its ability to form hydrogen bonds. b) false 29) Vinegar, cola. and beer all have a pH of 3.0. This means that these solutions .9 - ar-_ I - ral b) are alkaline c) contain more OH’ ion than H‘ ions e) choose this answer if none of these is correct 30) The chemical for ich lists on/ythe elemental composition of a molecule is called its ? empirical (molecular) formula b) structural formula c) manosaccharide formula ran ormu a e) choose this answer if none of these is correct 31) The disaccharide sucrose is made of the monosacchorides glucose and galactose. a) true m 32) The I: more ortion of a simple fat/ lipid (a triglyceride molecule) is which end this fat/lipid ? .- a) fatty acid end. > b) glycerol end c) phosphate end d) none of these is correct 33) The funcfimlgraup [COOHI makes a flight. ' ' it an acid. The group COOH is called ? a) a hydroxyl group -’/b) a carboxyl group c) a phosphate group d) a suifhydryl group answer if none of These is correct p“ / _. 34) A graphical plot of the rate of an enzyme catalyzed vs. the temperature of the ammo reaction reveals an ever increasing Wnear) rate, Le, as the temperature increases so does the rate of the a) ‘rrue _ reaction? b) false W 35) Which of the following best represonts a rate measuremen or Watalyzed reaction? a) mg of Substrate b) 30 seconds c) Km d) mg per minute___ e) none of these 36) From the list of proteins given below, pick the one That is a complex protein ?_ —--— a) albumins b) globulins c) histories :‘ d) nucleopfi e) choose this answer if none of the above is correct ’ 37) Which of the following statements is correct concerning the properties of enzymes? 0) are mostly proteins ’o) accelerate chemical rgctimsm c) function as catalysts d) may break or form covalent bonds K e) choose this answer if all of these'cFe correct . yaw—”gr! w 33) Enzymes which possass different amino acids sequences, but have the Same catalytic function, e5pecially wh between different species are? La) polymorphic -_ b) invariant c) site specific d) only simple proteins emmmer if none of the above are true 39) The position on the structure of an enzyme here a inhibitor or regulator molecule binds is called ’2 a) product site b) active site (lo) ailosteric site ) d) the lewrotatory site e) choose this answer if none of the obove‘fif'co 40) If the rate of an enzyme catalyzed reaction is at Subst tumtion. the enzyme is said to be at its? a) Km b) optimization ,mimum velocity (Vii-lax) ) d) active site e) choose this answer if none of 41) Match the following term with its appropriate definition. . . m fie/ix a) primary structure c) tertiary structure d quaternary structure 42) The nonvprotein portion W may actually catalyze the reaction is called the .7 a) Substrate m c) peptide bond d) none of these 43) The plan of cellular organization] which is the most primitive one and has little to no internal Membrane structure, is the plan of? _ a) grocorzotes b) eucaryotes c) metaphytian Cell plan . d) metazaan plan e) none of these is a best choice W 44) Of the many cell organelle membmnes, which one contains pores as a part of 51W a) mitochondrial membrane in) chloroplast membrane -" c) nuclear membrane d) choose this answer if none of these have pores 45) DNA is found ? arid the nucleus b) in a mitochondria c) in a chromosome ' :l :‘n a chloropgfl e) choase this answer if it is found in all of these 46) The peptide bond, is a covalent bond, form between the carboxyl group of one amino acid and the amino group of a second amino acid. " a) true b) false 47) The nuclear envelope ? o) consists of a single membrane b) is found' In both eucaryotic and prokarygtic cells c) contains mitoplasm d) a a b only . e) none of theSe is a correct choic\ \E-h --—.— -v- ._ . . ... . . 48) Which of the following characteristics is NOTo property of living systems or "of life? a) living things have a specific onganization bLliving thims‘wind differentiate a) living things transform and consume energy ./d)iiving things may e) choose this answer if all of the above are chans 49) The Archebacteria contain which of the follwcaryotic groups? a) Thermophilefi f’o) methanogens c) haiophiies d) choose this answer if the arcfiebocferia contain all of the above groups. 50) The interior aqueous portion__ mitochondria might best be called? a) nuiceoplosm C b) mitoplasrn c) chloroplasrn d) stroma e) choose this answer-7?? o the above is correct ...
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