RNAS-C EXAMS WITH VERIFIED
i i i i
QUESTIONS AND CORRECT
i i i i
ANSWERS i
1. i is ia irelatively iindigestible istrengthening ipolymer ithat iaccounts ifor
more
i i than ia iquarter iof ithe idry imass iof iwood.
a. cellulose
b. starch
c. lignin
d. none iof ithe iabove
-ANSWERS-c. ilignin
2. An imRNA imolecule iwith i360 icodons ihas nucleotides
a. 120
b. 180
c. 360
d. 1,080
e. 2,160
- iANSWERS-d. i1,080
3. Compared ito imost ianimals, ithe igrowth iof imost iplant istructure iis ibest
idescribed i as:
a. perennial
b. weedy
c. indeterminate
d. primary
-ANSWERS-c. iindeterminate
4. During iinitiation, ithe isequence iof iDNA ito iwhich iRNA ipolymerase ibinds
imost i tightly iis ithe:
a. promoter
b. poly iC icenter
c. poly iA itail
d. 5' icap
, e. minor igroove
-ANSWERS-a. ipromoter
5. During itranslation, ithe iformation iof ia ipeptide ibond ibetween ian iamino iacid iat
ithe i P isite iand ian iamino iacid iat ithe iA isite iis icatalyzed iby:
a. the ilarge iribosomal isubunit
b. a ispecialized isegment iof iDNA
c. a ispecialized isegment iof iRNA
d. the iinitiation icomplex
e. initiation ifactors
-ANSWERS-a. ithe ilarge iribosomal isubunit
6. Eukaryotic iDNA ican ipair iwith ia icomplementary imRNA isequence iin ia
iprocess i called ihybridized. iWhen ithis ioccurs, ithe ihybrid imolecules icontain
iloops iof i double-stranded iDNA icalled:
a. retroviruses
b. introns
c. exons
d. transcripts
e. puffs
-ANSWERS-b. iintrons
7. If ia i5'-3' istrand iof iDNA ihas ithe isequence iGTCTATGCATTA, iwhat iwould ibe
ithe i sequence iof ithe iresulting itranscribed iRNA?
a. 5'-GUCUAUGCAUUA-3'
b. 5'-GTCTATGCATTA-3'
c. 5'-CAGATACGTAAT-3'
d. 5'-CAGAUACGUAAU-3'
e. 3'-GUCUAUGCAUUA-5'
-ANSWERS-a. i5'-GUCUAUGCAUUA-3'
8. Phloem isap ican iflow:
a. from ileaves ito ishoots ionly
b. from ishoots ito ileaves ionly
c. from isites iof isugar iproduction ito istorage iunits ionly
d. both iways ibetween iproduction iand istorage isites
-ANSWERS-d. iboth iways ibetween iproduction iand istorage isites
9. Ribosomes iare ia icollection iof that iare ineeded ifor :
a. small iproteins; itranslation
b. proteins iand ismall iRNAs; itranslation
c. proteins iand itRNAs; itranscription
d. proteins iand imRNAs; itranslation
i i i i
QUESTIONS AND CORRECT
i i i i
ANSWERS i
1. i is ia irelatively iindigestible istrengthening ipolymer ithat iaccounts ifor
more
i i than ia iquarter iof ithe idry imass iof iwood.
a. cellulose
b. starch
c. lignin
d. none iof ithe iabove
-ANSWERS-c. ilignin
2. An imRNA imolecule iwith i360 icodons ihas nucleotides
a. 120
b. 180
c. 360
d. 1,080
e. 2,160
- iANSWERS-d. i1,080
3. Compared ito imost ianimals, ithe igrowth iof imost iplant istructure iis ibest
idescribed i as:
a. perennial
b. weedy
c. indeterminate
d. primary
-ANSWERS-c. iindeterminate
4. During iinitiation, ithe isequence iof iDNA ito iwhich iRNA ipolymerase ibinds
imost i tightly iis ithe:
a. promoter
b. poly iC icenter
c. poly iA itail
d. 5' icap
, e. minor igroove
-ANSWERS-a. ipromoter
5. During itranslation, ithe iformation iof ia ipeptide ibond ibetween ian iamino iacid iat
ithe i P isite iand ian iamino iacid iat ithe iA isite iis icatalyzed iby:
a. the ilarge iribosomal isubunit
b. a ispecialized isegment iof iDNA
c. a ispecialized isegment iof iRNA
d. the iinitiation icomplex
e. initiation ifactors
-ANSWERS-a. ithe ilarge iribosomal isubunit
6. Eukaryotic iDNA ican ipair iwith ia icomplementary imRNA isequence iin ia
iprocess i called ihybridized. iWhen ithis ioccurs, ithe ihybrid imolecules icontain
iloops iof i double-stranded iDNA icalled:
a. retroviruses
b. introns
c. exons
d. transcripts
e. puffs
-ANSWERS-b. iintrons
7. If ia i5'-3' istrand iof iDNA ihas ithe isequence iGTCTATGCATTA, iwhat iwould ibe
ithe i sequence iof ithe iresulting itranscribed iRNA?
a. 5'-GUCUAUGCAUUA-3'
b. 5'-GTCTATGCATTA-3'
c. 5'-CAGATACGTAAT-3'
d. 5'-CAGAUACGUAAU-3'
e. 3'-GUCUAUGCAUUA-5'
-ANSWERS-a. i5'-GUCUAUGCAUUA-3'
8. Phloem isap ican iflow:
a. from ileaves ito ishoots ionly
b. from ishoots ito ileaves ionly
c. from isites iof isugar iproduction ito istorage iunits ionly
d. both iways ibetween iproduction iand istorage isites
-ANSWERS-d. iboth iways ibetween iproduction iand istorage isites
9. Ribosomes iare ia icollection iof that iare ineeded ifor :
a. small iproteins; itranslation
b. proteins iand ismall iRNAs; itranslation
c. proteins iand itRNAs; itranscription
d. proteins iand imRNAs; itranslation
