BIO 235 Exam 4 Questions and
Answers|Latest Update
RNA table Characteristics -composed of nucleotides
-Ribose sugar
-OH group
-A,G,C,U
-Joined by Pbonds
-Single stranded
-Many types of secondary structure
-easily degraded
RNA molecule can fold back on itself? Yes, then it is opposite orientation
RNA secondary structure partially double-stranded structures; common motifs include
stem loops, hairpins, and kissing loops
RNA transcribed in both prokaryotic and eukaryotic cells - messenger RNA
,-Ribosomal RNA
-Transfer RNA
RNA produced only in Eukaryotes -pre-messenger
-small nuclear
-small nucleolar
-Micro
-Small interfering
-piwi interacting
RNA produced by only prokaryotes CRISPR RNA
Central dogma of molecular biology Information flowing from DNA to RNA to protein -
FALSE FALSE FALSE
-Reverse transcriptase (HIV) moves from RNA to DNA
, Info that ends up in polypeptide is RNA coding region AND 5' untranslated region and 3'
untranslated region
promoter never transcribed, signal to start transcription (right before coding region)
-promotes gene expression
Termination site Region of DNA that tells the polymerase when transcription should
conclude.
Enhancer elements can be upstream or downstream from promoters
Promoters are located where? upstream of the sire where transcription of a gene actually
begins
Bases in a promoter sequence are numbered how? in relation to the transcription start site
Prokaryotic Promoter -recognized by the o factor of RNA polymerase
-includes two consensus sequences at -35 and -10
Answers|Latest Update
RNA table Characteristics -composed of nucleotides
-Ribose sugar
-OH group
-A,G,C,U
-Joined by Pbonds
-Single stranded
-Many types of secondary structure
-easily degraded
RNA molecule can fold back on itself? Yes, then it is opposite orientation
RNA secondary structure partially double-stranded structures; common motifs include
stem loops, hairpins, and kissing loops
RNA transcribed in both prokaryotic and eukaryotic cells - messenger RNA
,-Ribosomal RNA
-Transfer RNA
RNA produced only in Eukaryotes -pre-messenger
-small nuclear
-small nucleolar
-Micro
-Small interfering
-piwi interacting
RNA produced by only prokaryotes CRISPR RNA
Central dogma of molecular biology Information flowing from DNA to RNA to protein -
FALSE FALSE FALSE
-Reverse transcriptase (HIV) moves from RNA to DNA
, Info that ends up in polypeptide is RNA coding region AND 5' untranslated region and 3'
untranslated region
promoter never transcribed, signal to start transcription (right before coding region)
-promotes gene expression
Termination site Region of DNA that tells the polymerase when transcription should
conclude.
Enhancer elements can be upstream or downstream from promoters
Promoters are located where? upstream of the sire where transcription of a gene actually
begins
Bases in a promoter sequence are numbered how? in relation to the transcription start site
Prokaryotic Promoter -recognized by the o factor of RNA polymerase
-includes two consensus sequences at -35 and -10
