BIOL210 / BIOL 210 Module 5
(Latest Update ) Genetics
| Questions & Answers | Grade A |
100% Correct - Portage Learning
DNA Replication, Transcription, and Translation
Question:
what enzyme is responsible for protein-coding genes?
Answer:
RNA polymerase II
Question:
are proteins always being expressed?
Answer:
in some cases, but are usually upregulated or downregulated as needed
,Question:
the cis-acting elements in eukaryotes are called:
Answer:
silencers and enhancers
Question:
silencer
Answer:
turn off the expression of genes
(by regulating RNA pol II)
Question:
enhancer
Answer:
increase gene activity
(by regulating RNA pol II)
,Question:
(True/False): a silencer is always located to the gene it affects, but an enhancer
can be far away
Answer:
FALSE
Question:
in eukaryotes, do the cis-acting elements need to be close to the gene itself?
Answer:
no, can be anywhere
Question:
what are trans-acting elements in eukaryotes called?
Answer:
transcription factors
, Question:
the 3 classifications of transcription factors:
Answer:
1. general transcription factors
2. transcriptional activators
3. transcriptional repressors
Question:
function of general transcription factors
Answer:
helps bind the RNA pol II to the promoter and control transcription
Question:
function of transcriptional activators and repressors
Answer:
bind to the silencers or enhancers to either:
-control RNA initiation complexes
or
-help RNA pol II dissociate from RNA
(Latest Update ) Genetics
| Questions & Answers | Grade A |
100% Correct - Portage Learning
DNA Replication, Transcription, and Translation
Question:
what enzyme is responsible for protein-coding genes?
Answer:
RNA polymerase II
Question:
are proteins always being expressed?
Answer:
in some cases, but are usually upregulated or downregulated as needed
,Question:
the cis-acting elements in eukaryotes are called:
Answer:
silencers and enhancers
Question:
silencer
Answer:
turn off the expression of genes
(by regulating RNA pol II)
Question:
enhancer
Answer:
increase gene activity
(by regulating RNA pol II)
,Question:
(True/False): a silencer is always located to the gene it affects, but an enhancer
can be far away
Answer:
FALSE
Question:
in eukaryotes, do the cis-acting elements need to be close to the gene itself?
Answer:
no, can be anywhere
Question:
what are trans-acting elements in eukaryotes called?
Answer:
transcription factors
, Question:
the 3 classifications of transcription factors:
Answer:
1. general transcription factors
2. transcriptional activators
3. transcriptional repressors
Question:
function of general transcription factors
Answer:
helps bind the RNA pol II to the promoter and control transcription
Question:
function of transcriptional activators and repressors
Answer:
bind to the silencers or enhancers to either:
-control RNA initiation complexes
or
-help RNA pol II dissociate from RNA
