Cell //
& /
Molecular
/ /
Biology
/ /
Final
/ /
Review,
/ /
Cell
/ /
Bio
/ /
Final
/ /
Exam review questions with correct answers
/ // // // // //
What /
/are /
/the /
/three //steps //of //Translation? //- //CORRECT //ANSWERS(S)✔✔initiation, //elongation, //termination
What /
/occurs /
/in /
/Translational /
/Initiation? //- /
/CORRECT /
/ANSWERS(S)✔✔1. /
/Small /
/subunit //binds //to //the //5' //cap //and //scans //towards //the //3' //end //until //it //hits //an //AUG //codon.
,2. //tRNA //(with //methionine) //locks //into //the //P-
site //of //the //ribosome //as //the //larger //subunit //comes //and //binds //to //the //smaller //subunit
What /
/occurs /
/in /
/Translational /
/Elongation? //- /
/CORRECT //ANSWERS(S)✔✔1. //A //second //tRNA //with //an //amino //acid //binds //to //the //vacant //A-
site. //
2. //The //methionine //from //tRNA //on //the //P-site //transfers //to //the //tRNA //on //the //A-
site, //causing //the //formation //of //a //tRNA //with //a //dipeptide //attached.
3. //The //ribosome //moves //down //three //nucleotides, //shifting //the //empty //tRNA //into //the //E-
site, //and //the //dipeptide //tRNA //to //the //P-site
4. //The //tRNA //in //the //E-site //leaves //to //find //another //Methionine, //the //tRNA //in //the //P-
site //gives //its //two //amino //acids //to //the //next //tRNA //in //the //A-site. //
5. //This //repeats //until //the //Ribosome //reaches //a //stop //codon
What /
/occurs /
/in /
/Translational /
/Termination? //- /
/CORRECT /
/ANSWERS(S)✔✔1. //The //Release //Factor //Protein //binds //to //the //stop //codon //in //the //A-site.
2. //tRNA //at //P-
site //dissociate, //breaking //the //phosphoester //bond, //releasing //the //amino //acid //sequence. //
,3. //The //subunits //dissociate.
What /
/is //the //size //of //a //large //ribosomal //subunit //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔60s
What /
/is //the //size //of //a //small //ribosomal //subunit //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔40s
What //is //the //size //of //a //Ribosomal //dimer //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔80s
What /
/is //the //size //of //a //large //ribosomal //subunit //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔50s
What /
/is //the //size //of //a //small //ribosomal //subunit //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔30s
What //is //the //size //of //a //Ribosomal //Dimer //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔70s
Where //is //the //tataaa //box //located? //- //CORRECT //ANSWERS(S)✔✔Promoter //region
What //is //the //start //codon //sequence? //- //CORRECT //ANSWERS(S)✔✔ATG
What /
/is /
/the /
/name /
/of /
/the /
, /region /
/that /
/encompasses /
/everything /
/from /
/the /
/start //codon, //to //the //end //of //translation? //- //CORRECT //ANSWERS(S)✔✔Open //Reading //Frame
What /
/happens /
/in /
/Eukaryotic /
/Transcriptional /
/Initiation? //- /
/CORRECT /
/ANSWERS(S)✔✔General /
/transcription //factor //(gnTF) //recognize //the //promoter //region //and //bind //to //it.
Those //gnTF's //recruit //more //of //themselves, //and //recruit //RNA //polymerase. //
The //gnTF's //determine //which //strand //is //the //template //strand //by //identifying //the //tataaa //box
What //happens //in //Prokaryotic //Transcriptional //Initiation? //- //CORRECT //ANSWERS(S)✔✔Sigma
//factors //bind //to //the //promoter //region //(Prokaryotes //do //not //have //tataaa //boxes)
What /
/happens /
/in /
/Eukaryotic /
/Transcriptional /
/Elongation? //- /
/CORRECT /
/ANSWERS(S)✔✔1. /
& /
Molecular
/ /
Biology
/ /
Final
/ /
Review,
/ /
Cell
/ /
Bio
/ /
Final
/ /
Exam review questions with correct answers
/ // // // // //
What /
/are /
/the /
/three //steps //of //Translation? //- //CORRECT //ANSWERS(S)✔✔initiation, //elongation, //termination
What /
/occurs /
/in /
/Translational /
/Initiation? //- /
/CORRECT /
/ANSWERS(S)✔✔1. /
/Small /
/subunit //binds //to //the //5' //cap //and //scans //towards //the //3' //end //until //it //hits //an //AUG //codon.
,2. //tRNA //(with //methionine) //locks //into //the //P-
site //of //the //ribosome //as //the //larger //subunit //comes //and //binds //to //the //smaller //subunit
What /
/occurs /
/in /
/Translational /
/Elongation? //- /
/CORRECT //ANSWERS(S)✔✔1. //A //second //tRNA //with //an //amino //acid //binds //to //the //vacant //A-
site. //
2. //The //methionine //from //tRNA //on //the //P-site //transfers //to //the //tRNA //on //the //A-
site, //causing //the //formation //of //a //tRNA //with //a //dipeptide //attached.
3. //The //ribosome //moves //down //three //nucleotides, //shifting //the //empty //tRNA //into //the //E-
site, //and //the //dipeptide //tRNA //to //the //P-site
4. //The //tRNA //in //the //E-site //leaves //to //find //another //Methionine, //the //tRNA //in //the //P-
site //gives //its //two //amino //acids //to //the //next //tRNA //in //the //A-site. //
5. //This //repeats //until //the //Ribosome //reaches //a //stop //codon
What /
/occurs /
/in /
/Translational /
/Termination? //- /
/CORRECT /
/ANSWERS(S)✔✔1. //The //Release //Factor //Protein //binds //to //the //stop //codon //in //the //A-site.
2. //tRNA //at //P-
site //dissociate, //breaking //the //phosphoester //bond, //releasing //the //amino //acid //sequence. //
,3. //The //subunits //dissociate.
What /
/is //the //size //of //a //large //ribosomal //subunit //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔60s
What /
/is //the //size //of //a //small //ribosomal //subunit //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔40s
What //is //the //size //of //a //Ribosomal //dimer //in //Eukaryotes? //- //CORRECT //ANSWERS(S)✔✔80s
What /
/is //the //size //of //a //large //ribosomal //subunit //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔50s
What /
/is //the //size //of //a //small //ribosomal //subunit //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔30s
What //is //the //size //of //a //Ribosomal //Dimer //in //Prokaryotes? //- //CORRECT //ANSWERS(S)✔✔70s
Where //is //the //tataaa //box //located? //- //CORRECT //ANSWERS(S)✔✔Promoter //region
What //is //the //start //codon //sequence? //- //CORRECT //ANSWERS(S)✔✔ATG
What /
/is /
/the /
/name /
/of /
/the /
, /region /
/that /
/encompasses /
/everything /
/from /
/the /
/start //codon, //to //the //end //of //translation? //- //CORRECT //ANSWERS(S)✔✔Open //Reading //Frame
What /
/happens /
/in /
/Eukaryotic /
/Transcriptional /
/Initiation? //- /
/CORRECT /
/ANSWERS(S)✔✔General /
/transcription //factor //(gnTF) //recognize //the //promoter //region //and //bind //to //it.
Those //gnTF's //recruit //more //of //themselves, //and //recruit //RNA //polymerase. //
The //gnTF's //determine //which //strand //is //the //template //strand //by //identifying //the //tataaa //box
What //happens //in //Prokaryotic //Transcriptional //Initiation? //- //CORRECT //ANSWERS(S)✔✔Sigma
//factors //bind //to //the //promoter //region //(Prokaryotes //do //not //have //tataaa //boxes)
What /
/happens /
/in /
/Eukaryotic /
/Transcriptional /
/Elongation? //- /
/CORRECT /
/ANSWERS(S)✔✔1. /
