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Biology 1105 Test 3 IClicker and Homework Questions with 100- correct answers(graded A+)
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Biology 1105 Test 3 IClicker and Homework Questions with 100- correct answers(graded A+)
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Biology 1105: Test 3 IClickerand Homework Questions with
100% correct answers(graded
A+)
The central dogma of biology states that DNA can be converted into
____ through ___________ and that RNA can then be converted into
_______ through _______. - answer RNA
transcription
peptides
translation
A cluster of coding sequences in prokaryotes that is transcribed as a
unit into a single mRNA molecule - answer operon
A sequence or sequences of DNA that is both transcribed into RNA
and translated into protein - answer Exon
A non-coding sequence or non-coding sequences in eukaryotes that
is not translated due to removal - answer Intron
A sequence of DNA that provides a recognition and attachment site
for RNA polymerase to begin transcription - answer promoter
Transcription occurs in three stages - answer initiation, elongation,
and termination.
Place the following events in order as they would occur during the
process of transcription.
Release of the σ (sigma) factor and incorporation of new
ribonucleotides
Specific sequences can result in hairpin structures, which causes
the transcription bubble to dissociate
, RNA polymerase binds to the promoter along with the σ (sigma)
factor
RNA polymerase reaches the start site - answer 1-RNA polymerase
binds to the promoter along with the σ (sigma) factor
2-RNA polymerase reaches the start site
3-Release of the σ (sigma) factor and incorporation of new
ribonucleotides
4-Specific sequences can result in hairpin structures, which causes
the transcription bubble to dissociate
Where does transcription occur? - answer Prokaryotes: cytoplasm
Eukaryotes: nucleus
Is transcription coupled with translation (i.e., transcription and
translation occur simultaneously) - answer prokaryotes: yes
eukaryotes: no
Does the transcribed RNA sequence contain introns? - answer
prokaryotes:no
eukaryotes: yes
Are the primary mRNA transcripts modified before moving on to
translation? - answer prokaryotes:no
eukaryotes: yes
Composes the ribosome and catalyzes peptide bonds - answer
ribosomal RNA (rRNA)
Nuclear processing of eukaryotic pre-mRNA - answer Small Nuclear
RNA (snRNA)
Encodes the amino acid sequence for a protein - answer messenger
RNA (mRNA)
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