RNA TEST QUESTIONS WITH COMPLETE SOLUTIONS

EXAM 4 BIOL 1001 LSU QUESTIONS
AND CORRECT ANSWERS

A ssequence sof sthree sRNA sbases scan sfunction sas sa(n) swhat? s
A. scodon sonly.
B. santicodon sonly. sgene sonly.
C. scodon sor santicodon.
D. sNONE sof sthe sabove sanswers s- scorrect sanswer s✔✔D

What sis sMessenger sRNA s(mRNA)?
A. sa snucleic sacid sthat, sby sitself, scodes sfor sthe sprimary sstructure sof sa sprotein. smade
sdirectly sfrom sDNA sduring stranscription.

B. spermanently sincorporated sinto sthe sstructure sof sribosomes.
C. slarger sif sthe sprotein sto sbe smade shas sa slonger samino sacid ssequence.
D. sNONE sof sthe sabove sanswers s- scorrect sanswer s✔✔B

The sgenetic smaterial sof ssome sviruses, ssuch sas sHIV, sis snot snormal sDNA sbut sis sinstead
swhat scomponent?

(A) sRNA.
(B) sprotein.
(C) scarbohydrate.
(D) slipid.
(E) ssingle-stranded sDNA. s- scorrect sanswer s✔✔A

In sa swild-type sstrain sof sfruit sflies, sthe slength sof sa sgene sfrom sthe sstart sto sthe sstop
scodon sis s2,000 sDNA sbases. sSuppose san sexperiment sindicated sthat sthe smRNA

smolecule stranscribed sfrom sthis sgene sis smuch sshorter s(only s1,200 sbases). sWhat sis sthe

smost slikely sexplanation sfor sthis?

(A) sA smutation scaused sthe sformation sof san sextra sstop scodon sin sthe sgene.
(B) sThe smRNA swas sprematurely sdegraded.
(C) sThere sare sintrons sin sthe sDNA sthat swere scut sout sof sthe smRNA.
(D) sThe sfirst s800 sbases sof sDNA sare salways slost sas sit sis stranscribed sinto smRNA. s(E)
sNONE sof sthe sabove sanswers s- scorrect sanswer s✔✔C



What sdoes sthe sprocess sof sTranscription sdo?
(A) ssynthesizing sa sDNA smolecule sfrom san sRNA stemplate.
(B) sassembling san sRNA smolecule swithout sa stemplate.
(C) ssynthesizing san sRNA smolecule susing sa sDNA stemplate.

, (D) ssynthesizing sa sprotein susing sinformation sfrom smRNA.
(E)replicating sa ssingle-stranded sDNA smolecule. s- scorrect sanswer s✔✔C

What sis sthe sprocess sof sconverting sthe s"message" sof smRNA sinto sa ssequence sof samino
sacids scalled?

(A) stranslation.
(B) stranscription.
(C) sactivation.
(D) sreplication.
(E) srepression. s- scorrect sanswer s✔✔A

Which sof sthe sfollowing sattaches sto sspecific samino sacids?
(A) sribosomal sRNA
(B) sDNA
(C)messenger sRNA s
(D) stransfer sRNA
(E) sRNA spolymerase s- scorrect sanswer s✔✔D

Why sdoes syour stongue sdoes snot sgrow shair?
(A) sdifferent sgenes sare sexpressed sin sdifferent stissues.
(B) sskin scells shave sextra sDNA sthat scodes sfor shair sproteins.
(C) sthe sgenes sfor shair sproteins shave sbeen sdeleted sfrom sthe scells sof syour stongue. s
(D) ssaliva sprevents shair sfrom sgrowing.
(E) sNONE sof sthe sabove sanswers s- scorrect sanswer s✔✔A

The ssequence sof snitrogen-containing sbases son sone sstrand sof sDNA smost sdirectly
sdetermines sthe ssequence sof swhat?

(A) sfatty sacids sin sa sfat smolecule.
(B) samino sacids sin sa sprotein smolecule.
(C) ssugars sin sa spolysaccharide smolecule. s(D) sbases sin sa sprotein smolecule.
(E) sNONE sof sthe sabove sanswers s- scorrect sanswer s✔✔B

Each sgene sis sspecific sfor sa sparticular stype sof sprotein. sTrue sor sFalse? s
(A) sTRUE
(B) sFALSE s- scorrect sanswer s✔✔A

Which sof sthe sfollowing s"reads" scodons?
(A) sRNA spolymerase
(B) sDNA
(C) smessenger sRNA
(D) stransfer sRNA s- scorrect sanswer s✔✔D

Which sof sthe sitems sbelow sis sNOT sdirectly sinvolved sin stranslation? s
(A) sribosomes.
(B) stRNA