Transcript
General Chemistry: Atoms First, 2e (McMurry and Fay) Chapter 23 Organic and Biological Chemistry
23.1 Multiple Choice Questions 1) Which of the following statements about carbon is false ? A) Carbon compounds hae coalent bonds. !) Carbon compounds can hae multiple bonds. C) Carbon is tetraalent. ") Carbon uses sp2 h#brids to form tetrahedral structures. Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes 2) %he most important characteristic of carbon atoms for forming organic molecules is A) abilit# to bond together to form long chains. !) abilit# to form multiple coalent bonds. C) use of h#brid orbitals. ") all of the aboe are important Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes 3) Another term for al(anes is A) al(enes. !) al(#nes. C) saturated h#drocarbons. ") unsaturated h#drocarbons. Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes ) Compounds that hae the same formula but different molecular structures are called A) isoelectronic. !) isomers. C) isotones. ") isotopes. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes
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*) Which of the following statements about isomers is false ? A) All al(anes hae branched chain isomers. !) As the number of carbon atoms increase in a compound+ so do the number of possible isomers. C) ,somers hae different ph#sical properties. ") ,somers hae the same formula but different molecular structures. Answer$ A "iff$ 1 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes -) ow man# isomers are there for C*12 ? A) 3 !) C) * ") Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes Algo. 'ption$ algorithmic /) Which is the condensed structure of a straight0chain h#drocarbon?
A) , !) ,, C) ,,, ") , Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes
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) Which condensed structure below representing an al(ane is not correct? A) C3C2C3 !)
C) C3C2C2C3 ")
Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes ) Which of the following condensed structures represent the same molecule?
A) , and ,, !) ,, and , C) ,,, and , ") ,, and ,,, Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes 14) Which of the structures below are identical ?
A) , and ,, !) ,, and ,,, C) ,,, and , ") , and , Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes
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11) &ome of the products from reaction of bromine and propane are shown below. 5%he h#drogen atoms are not shown in the structures.) ow man# are identical structures?
A) 2 !) 3 C) ") All are isomers of each other. Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes 12) Which one of the structures below is different from the other three?
A) , !) ,, C) ,,, ") , Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.1 'rganic Molecules and %heir &tructures$ Al(anes 13) Which of the following statements is false regarding functional groups? A) %he chemical properties of the functional group dictate the chemistr# of the larger molecule. !) 6ach functional group has a characteristic chemical behaior. C) A functional group consists of an atom or a group of atoms that is part of a larger molecule. ") A functional group consists of onl# carbon and h#drogen atoms. Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups
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1) ,dentif# the functional group$
A) alcohol !) amine C) amide ") ester Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups 1*) ,dentif# the functional group$
A) aldeh#de !) (etone C) ester ") ether Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups
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1-) Which functional group below represents a carbo9#lic acid? A)
!)
C)
")
Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups 1/) Which functional group below represents a (etone? A)
!)
C)
")
Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups
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1) Which functional group below represents an aldeh#de? A)
!)
C)
")
Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups 1) %he functional groups in the molecule below are 2 :C2C'2 A) al(ane+ amide+ and carbo9#lic acid. !) al(ane+ amine+ and carbo9#lic acid. C) al(ane+ amide+ (etone+ and alcohol. ") al(ane+ amine+ (etone+ and alcohol. Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups 24) Which one of the following compounds is an alcohol? A) C3'C3 !) C3C'C3 C) 5C3)2C' ") C3C'2 Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups
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21) %he functional groups in the molecule below are '
'
CC2
C'C3
A) al(ane+ aldeh#de+ and ester. !) al(ane+ aldeh#de+ (etone+ and ether. C) al(ane+ carbo9#lic acid+ and ester. ") al(ane+ (etone+ and ester. Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.2 7amilies of 'rganic 'rganic Compounds$ 7unctional 8roups 22) Which statement below is false concerning nomenclature rules for al(anes? A) Carbon atoms are numbered starting with the atom farthest from the branching point. !) 6ach branching group is assigned a number referring to its point of attachment in the parent chain. C) %he name of the al(ane is written as a single word. ") %he parent name is ta(en from the longest continuous chain of carbon atoms. Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 23) An al(#l group is named for the part of the al(ane group that remains after a ;;;;;;;; is remoed. A) C atom !) C3 group C) C2 group ") atom Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 2) ,f the point of attachment to an al(ane is b# the middle carbon in a prop#l group+ the group is called A) isoprop#l. !) n0prop#l. C) sec C) sec0prop#l. 0prop#l. ") tert 0prop#l. 0prop#l. Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds
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2*) What is the name for the al(#l group$
A) isobut#l !) tert 0but#l 0but#l C) tribut#l ") trimeth#l Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 2-) What is the ,<=AC name for the following compound?
A) heptane !) 3+ 30dimeth#lpentane C) 2+ 20dimeth#l020eth#lpropane ") 2+ 20dieth#lpropane Answer$ ! "iff$ 3 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 2/) What is the ,<=AC name for the continuous carbon chain of C1422? A) decane !) dipentane C) tenal(ane ") tenane Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds
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2) What is the ,<=AC name for the following compound$
A) 1+ 30dimeth#l010eth#lhe9ane !) + -0dimeth#l0-0eth#lhe9ane C) 3+ *0dimeth#loctane ") sec ") sec0he9#lbutane 0he9#lbutane Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 2) Which of the following compounds is *0eth#l00isoprop#l020meth#lnonane? A)
!)
C)
")
Answer$ " "iff$ %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds
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34) Which name is not correct? A) 1+ 20dichloropentane !) 2+ 30dimeth#lbutane C) 20eth#lbutane ") 0prop#lheptane Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 31) Which name is not correct? A) 2+ 20dimeth#lbutane !) 2+ 30dimeth#lpentane C) 2+ 3+ 30trimeth#lbutane ") 2+ 3+ 30trimeth#lpentane Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 32) %he names of compounds with carbon0carbon double bonds contain the suffi9 A) 0ane. !) 0ene. C) 0#ne. ") 0one. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.
2? A) al(anes !) al(enes C) al(#nes ") c#lcloal(anes Answer$ A "iff$ 1 %opic$ %opic$ &ection 23.3 :aming :aming 'rganic Compounds 3) What class of h#drocarbons has the general formula Cn2n? A) al(anes !) al(enes and c#cloal(anes C) al(#nes ") aromatics Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23. ) on the carbon atom? A) onl# 51) !) onl# 53) C) 51) and 53) ") 52) and 5) Answer$ " "iff$ 3 %opic$ %opic$ Conceptual =roblems 14-) Which of these molecules aboe hae a large partial negatie charge 5H0) on the carbon atom? A) onl# 51) !) onl# 53) C) 51) and 53) ") 52) and 5) Answer$ ! "iff$ 3 %opic$ %opic$ Conceptual =roblems
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14/) ,n the figure aboe+ which structures are identical? A) All are identical. !) :one are identical. C) onl# 51) and 5) ") onl# 51)+ 53)+ and 5) Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems 14) ,n the figure aboe+ which are isomers of compound 51)? A) All are isomers of compound 51). !) :one are isomers of compound 51). C) onl# 52) and 53) ") onl# 5) Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems 14) ,n the figure aboe+ which are branched h#drocarbons? A) All are branched h#drocarbons. !) :one are branched h#drocarbons. C) onl# 51) and 5) ") onl# 51)+ 52)+ and 5) Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems
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114) Which of the compounds shown aboe is correctl# identified b# the name pentane according to the ,<=AC ,<=AC s#stem of naming compounds? A) all !) none C) onl# 52) ") onl# 53) Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems 111) 111) Which of the compounds shown aboe is correctl# identified b# the name 20meth#lbutane? A) All are 20meth#lbutane. !) none C) onl# 51) ") onl# 51) and 5) Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems 112) Which of the compounds shown aboe is correctl# identified b# the name 30meth#lbutane? A) all !) none C) onl# 5) ") onl# 51) and 5) Answer$ ! "iff$ 3 %opic$ %opic$ Conceptual =roblems 113) Which of the compounds shown aboe is correctl# identified b# the name 2+ 20 dimeth#lpropane? A) all !) none C) onl# 52) ") onl# 51)+ 52)+ and 5) Answer$ C "iff$ 3 %opic$ %opic$ Conceptual =roblems 11) Which of the compounds shown aboe is correctl# identified b# the name 3+ 30 dimeth#lpropane? A) all !) none C) onl# 5) ") onl# 51) and 5) Answer$ ! "iff$ 3 %opic$ %opic$ Conceptual =roblems 33 Copyright © 2014 Pearson Education, Inc.
11*) What is the ,<=AC ,<=AC name of the following al(ane?
A) decane !) 2+ 0dimeth#loctane C) *+ /0dimeth#loctane ") 1+ 1+ 30trimeth#lheptane Answer$ ! "iff$ 3 %opic$ %opic$ Conceptual =roblems 11-) What is the ,<=AC ,<=AC name of the following al(ane?
A) 2+*0dimeth#lhe9ane !) octane C) 1+1++0tetrameth#lbutane ") 1+1+0trimeth#lpentane Answer$ A "iff$ 3 %opic$ %opic$ Conceptual =roblems
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11/) Which are isomers?
A) All are isomers. !) 51) and 52)B 53) and 5) C) 51) and 53)B 52) and 5) ") 51) and 5)B 52) and 53) Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems
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11) %o %o which famil# does this organic compound belong?
A) al(ane !) al(ene C) al(#ne ") arene Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems 11) %o %o which famil# does this organic compound belong?
A) al(ane !) al(ene C) al(#ne ") arene Answer$ ! "iff$ 2 %opic$ %opic$ Conceptual =roblems
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124) %o which famil# does this organic compound belong?
A) al(ane !) al(ene C) al(#ne ") arene Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems 121) %o which famil# does this organic compound belong?
A) al(ane !) al(ene C) al(#ne ") arene Answer$ A "iff$ 2 %opic$ %opic$ Conceptual =roblems
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122) %o which famil# does this organic compound belong?
A) alcohol !) aldeh#de C) ether ") (etone Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems 123) %o which famil# does this organic compound belong?
A) alcohol !) aldeh#de C) ether ") (etone Answer$ A "iff$ 2 %opic$ %opic$ Conceptual =roblems
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12) %o which famil# does this organic compound belong?
A) alcohol !) aldeh#de C) ether ") (etone Answer$ ! "iff$ 2 %opic$ %opic$ Conceptual =roblems 12*) %o which famil# does this organic compound belong?
A) alcohol !) aldeh#de C) ether ") (etone Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems
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12-) %o which famil# does this organic compound belong?
A) amide !) amine C) carbo9#lic acid ") ester Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems 12/) %o which famil# does this organic compound belong?
A) amide !) amine C) carbo9#lic acid ") ester Answer$ A "iff$ 2 %opic$ %opic$ Conceptual =roblems
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12) %o which famil# does this organic compound belong?
A) amide !) amine C) carbo9#lic acid ") ester Answer$ ! "iff$ 2 %opic$ %opic$ Conceptual =roblems 12) %o which famil# does this organic compound belong?
A) amide !) amine C) carbo9#lic acid ") ester Answer$ " "iff$ 2 %opic$ %opic$ Conceptual =roblems
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134) ,dentif# the functional groups in the following compound.
A) alcohol and (etone !) alcohol+ amine+ and (etone C) amine and carbo9#lic acid ") amine+ h#dro9ide+ and (etone Answer$ C "iff$ 2 %opic$ %opic$ Conceptual =roblems 131) ,dentif# the functional groups in the following compound.
A) alcohol !) alcohol and aldeh#de C) alcohol and (etone ") aldeh#de and h#dro9ide Answer$ ! "iff$ 3 %opic$ %opic$ Conceptual =roblems
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132) ,dentif# the carbo9#lic acid and alcohol from which the following ester was made.
A) C3C'2 and C3' !) C3C2C'2 and C3' C) C3C'2 and C3C2' ") C3C2C'2 and C3C2' Answer$ C "iff$ %opic$ %opic$ Conceptual =roblems 133) ,dentif# the carbo9#lic acid and alcohol from which the following ester was made.
A) C3C'2 and C3C2' !) C3C'2 and C3C2C2' C) C3C2C'2 and C3C2' ") C3C2C'2 and C3C2C2' Answer$ C "iff$ %opic$ %opic$ Conceptual =roblems 13) %he sum of the man# organic reactions that occ ur in the cell is called A) anabolism. !) catabolism. C) metabolism. ") none of these Answer$ C "iff$ 1 %opic$ %opic$ &ection 23. An An 'eriew of !iological Chemistr# Chemistr# 43 Copyright © 2014 Pearson Education, Inc.
13*) %he reactions that generall# release energ# that is used to power liing organisms are called A) anabolic reactions. !) catabolic reactions. C) metabolic reactions. ") none of these Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23. An An 'eriew of !iological Chemistr# Chemistr# 13-) %he maIor final product of the four stages of catabolism is A) acet#l CoA. !) A%=. C) C'2. ") fatt# acids. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23. An An 'eriew of !iological Chemistr# Chemistr# 13/) Which molecule is referred to as the Fenerg# storehouseF? A) acet#l CoA !) A%= C) C'2 ") fatt# acids Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23. An An 'eriew of !iological Chemistr# Chemistr# 13) Appro9imatel# what mass percent of a bod#Js dr# weight consists of proteins? A) *K !) 2*K C) *4K ") /2K Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 13) ,n addition to an amine+ which functional group do all amino acids contain? A) an alcohol !) an amide C) a carbo9#lic acid ") an o9#acid Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins
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14) A peptide bond lin(s A) an alcohol and a (etone. !) an amide and an aldeh#de. C) an amine and a carbo9#lic acid. ") A%= and acet#l CoA. Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 11) What does the term FalphaF amino acid mean? A) %he amino group attaches to the carbon in the carbo9#l group. !) %he amino group attaches to the carbon ne9t to the carbo9#lic acid group. C) %he amino acid contains onl# one on e carbon atom. ") %he amino acid contains onl# one carbo9#lic acid group. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 12) ow man# alpha amino acids commonl# ma(e up the different proteins found in humans? A) !) 24 C) 144 ") millions Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 13) What does the term FessentialF mean when referring to amino acids? %hese are the amino acids which A) are necessar# for digestion. !) are necessar# for respiration. C) are s#nthesied in our bodies. ") we must obtain from our diet. Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1) Which is an amino acid nonpolar neutral n eutral side chain? A) DC3 !) DC2' C) DC2C'2 ") DC2C2C2C2 :2 Answer$ A "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*) Which is an amino acid polar neutral side chain? 45 Copyright © 2014 Pearson Education, Inc.
A) DC3 !) DC2' C) DC2C'2 ") DC2C2C2C2 :2 Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-) Which is an amino acid basic side chain? A) DC3 !) DC2' C) DC2C'2 ") DC2C2C2C2 :2 Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1/) Which is an amino acid acidic side chain? A) DC3 !) DC2' C) DC2C'2 ") DC2C2C2C2 :2 Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1) Which one of the following amino acids does not contain a basic side chain A) arginine !) histidine C) l#sine ") serine Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1) Which of the following amino acids is acidic? A) alanine !) aspartic C) gl#cine ") aline Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*4) Which one of the following amino acids contains a polar side chain? 46 Copyright © 2014 Pearson Education, Inc.
A) alanine !) gl#cine C) serine ") aline Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*1) Which of the following amino acids contains a ben#l group? A) gl#cine !) isoleucine C) methionine ") phen#lalanine Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*2) Which one of the amino acids contains a double ring structure? A) phen#lalanine !) proline C) tr#ptophan ") t#rosine Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*3) Which amino acid has the simplest structure? A) alanine !) gl#cine C) leucine ") aline Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*) Which of the following amino acids contains a sulfur in its side chain? A) aspartic acid !) glutamic acid C) methionine ") threonine Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins
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1**) What does the term Fh#drophobicF mean? A) water reactie !) water repelling C) water soluble ") none of these Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*-) Which one of the following amino acids contains a h#drophobic side chain? A) leucine !) serine C) threonine ") t#rosine Answer$ A "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*/) All but one of the common amino acids contain a 0:2 amino group. Which one contains an 0:0 amino group as part of a ring structure? A) phen#lalanine !) proline C) tr#ptophan ") t#rosine Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*) =eptide bonds that lin( amino acids together in proteins contain the ;;;;;;;; functional group. A) amine !) amide C) ester ") (etone Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1*) ,n the protein+ al0%# al0%#r0is0=ro+ r0is0=ro+ which amino acid contains the :0terminal group? A) histidine !) proline C) t#rosine ") aline Answer$ " "iff$ 2 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 4 Copyright © 2014 Pearson Education, Inc.
1-4) ,n the protein+ Asn0=he0C#s0L# Asn0=he0C#s0L#s+ s+ which amino acid contains the C0terminal group? A) asparagine !) c#steine C) l#sine ") phen#lalanine Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-1) ow man# possible tripeptides can be made with the amino acids$ t#rosine+ histidine+ and c#steine+ each used onl# once? A) 3 !) C) ") Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-2) Which two amino acids form the dipeptide below?
A) asparagine and proline !) gl#cine and c#steine C) serine and alanine ") threonine and aline Answer$ " "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins
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1-3) Which of the following notations represents the dipeptide shown below?
A) =he0%hr !) %hr0=he C) &er0%#r ") %#r0&er Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-) Which of the following notations represents the pol#peptide shown below?
A) 8l#0Ala0&er !) 8l#0al0%hr C) &er0Ala08l# ") %hr0a %h r0al08l# l08l# Answer$ A "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins
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1-*) ow man# peptide bonds are present in the pol#peptide shown below?
A) one !) two C) three ") four Answer$ ! "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1--) A partial h#drol#sis of a protein #ielded the following fragments$ &er08l#+ 8l#0Ala+ 8l#0 Ala0al+ al0Leu+ Ala0al. What is the seuence of amino acids in the pol#peptide? A) 8l#0Leu0&er0Ala0al !) Leu0Ala08l#0al0&er C) &er08l#0Ala0al0Leu ") al0Ala08l#0&er0Leu Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-/) emoglobin is a protein molecule which contains iron atoms. ,f the mass percent of iron is 4.32K+ what is the molar mass of hemoglobin? A) 1424 gmol !) 1-+344 gmol C) -*+344 gmol ") none of these Answer$ C "iff$ 3 %opic$ %opic$ &ection 23.14 Amino Amino Acids+ =eptides+ and =roteins 1-) %he term Fcarboh#dratesF refers to a large class of pol#h#dro9#lated A) alcohols and carbo9#lic acids. !) aldeh#des and (etones. C) amines and amides. ") ethers and esters. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates
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1-) Which suffi9 on a (etone or aldeh#de indicates a sugar? A) 0ane !) 0ene C) 0one ") 0ose Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates 1/4) %he monosaccharide shown below is a5n)
A) aldohe9ose. !) aldopentose. C) (etohe9ose. ") (etopentose. Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.11 Carboh#drates 1/1) %he monosaccharide shown below is a5n)
A) aldohe9ose. !) aldopentose. C) (etohe9ose. ") (etopentose. Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.11 Carboh#drates
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1/2) What class of compounds are c#clic? A) ":A !) lipids C) monosaccharides ") proteins Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.11 Carboh#drates 1/3) ,n water+ which form of glucose predominates? A) c#clic N !) c#clic O C) open chain ") All three are eual in solution. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates 1/) When cr#stallied+ which form of glucose predominates? A) c#clic N !) c#clic O C) open chain ") All three are eual in cr#stals. Answer$ A "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates 1/*) &ucrose+ common table sugar+ when h#drol#ed will form A) am#lose and gl#cogen. !) cellulose and starch. C) glucose and fructose. ") lactose and maltose. Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates 1/-) Cellulose is a pol#mer consisting of thousands of A) N0glucose molecules. !) O0glucose molecules. C) long chain fatt# acids. ") amino acids. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates
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1//) Which substance is a monosaccharide? A) cellulose !) glucose C) gl#cogen ") starch Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.11 Carboh#drates 1/) Lipids are characteried b# what propert#? A) chemical reactiit# !) chemical structure C) refractie inde9 ") solubilit# Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.12 Lipids 1/) Which statement below regarding fatt# acids is not correct? 7att# acids A) are alwa#s liuids. !) are long chain carbo9#lic acids. C) are usuall# unbranched chains. ") usuall# hae an een number of carbon atoms. Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.12 Lipids 14) All of the fatt# acids below contain eighteen carbons and range from saturated to three double bonds. Which has the highest melting point? A) stearic acid 5saturated) !) oleic acid 5one double bond) C) linoleic acid 5two double bonds) ") linolenic acid 5three double bonds) Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.12 Lipids 11) What functional group is commonl# found in fats? A) D:2 !) D' C) DCD'DC ") ' D'DCDCD Answer$ " "iff$ 2 %opic$ %opic$ &ection 23.12 Lipids 54 Copyright © 2014 Pearson Education, Inc.
12) Which one of the following amine bases doe s not appear in ":A? A) adenine !) c#tosine C) guanine ") uracil Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 13) %he one c#clic amine base that occurs in ":A but not in G:A is A) c#stine. !) guanine. C) th#mine. ") uracil. Answer$ C "iff$ 1 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 1) Which of the following is not part of a nucleotide? A) c#clic amine base !) fatt# acid C) phosphoric acid ") a sugar Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 1*) %he attractie force between the c#lic amine bases in ":A is A) disulfide bridges. !) h#drogen bonding. C) h#drophobic stac(ing. ") ionic interactions of salt bridges. Answer$ ! "iff$ 1 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 1-) What is the sugar component in G:A called? A) fructose !) galactose C) glucose ") ribose Answer$ " "iff$ 1 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids
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1/) What is the bac(bone of the nucleic acid constructed of? A) alternating sugar phosphate groups !) amine bases C) glucose pol#mers ") pol#amides Answer$ A "iff$ 2 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 1) %he nucleotide seuence+ seuen ce+ %0A08+ %0A08+ stands for A) threonine0alanine0glutamine. !) th#mine0adenine0guanine. C) t#rosine0asparagine0glutamic acid. ") :one of these Answer$ ! "iff$ 2 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 1) Which of the following bases pairs with adenine in ":A? A) c#tosine !) guanine C) th#mine ") uracil Answer$ C "iff$ 2 %opic$ %opic$ &ection 23.13 :ucleic :ucleic Acids Acids 14) What is the complementar# ":A seuence to A%A%88%C? A) C8C8%%8A !) 8C8CAAC% C) %A%ACCA8 ") %<%
