WorksheetsGene & Protein Expression
Total questions: 13
Worksheet time: 8mins
Which of the following conditions suppress gene expression?
Repressor binds to operator
Inducer binds to repressor
RNA polymerase complex binds to promoter
Which of the following is/are components of transcription-initiation complex in eukaryotes?
lac operon
RNA polymerase
Transcription factors
When there is high level of NRD1, the transcription will be __________ regulated.
positively
negatively
indifferently
Methylation of lysine residue in H3 histone may reduce gene expression.
True
False
What happens to the DNA if telomerase activity is reduced?
DNA replication can occur infinitely
More cell division can happen
Cell may lose its replication ability
Genomic instability is caused by accumulated DNA damage
True
False
Disturbed balance between euchromatin and heterochromatin can lead to aging
True
False
Accumulation of misfolded proteins worsen aging process.
True
False
Which of the following is the ribosomal site for incoming aminoacyl-tRNA?
A site
P site
E site
Translation will be initiated by the tRNA with anticodon of (read 5' to 3')
ATG
AUG
UAG
CAU
If eEF proteins are inhibited, which of the following translation step will be blocked?
Initiation
Elongation
Termination
eIF-2 phosphorylation turns on gene expression
True
False
Amino acid is attached to tRNA by an enzyme called
(a)
