1. Explain the transcription and translation mechanism of
protein and the role of GTP in translation process
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Which of the following aspect of translation applies to eukaryotes
but not prokaryotes? a.)Transcription and translation without
exception occur in the same cellular space and at the same time.
b.)Their ribosomal subunits contain one less rRNA, fewer
polypeptides, and have lower molecular weights. c.)A pre-mRNA is
processed at each end and spliced to become a mature mRNA
transcript. d.)tRNAs and rRNAs undergo processing to achieve their
mature, functional form. e.)A single mRNA transcript may contain
several coding regions that encode...
In prokaryotes, transcription and translation takes place in the
_________________________.
In Eukaryotes, transcription takes place in
_______________________.
The regions of genes that code for proteins are called
_____________________.
The regions of genes that do not code for proteins are called
_____________________.
6. Mutation p.191, 10th ed.
What is a mutation?
_____________________________________________________________________
What is the difference between Spontaneous
mutation and induced mutation?
Protein Synthesis – Kinds of RNA
5. List the three types of RNA and describe an important
property of...
Bacterial cells regulate gene expression at both transcription
and translation levels. Transcription is controlled by
transcription factors or DNA binding proteins that bind promoters
(regulatory sequences of genes) and prevent or promote RNA
Polymerase binding. Positive control of transcription involves both
disabling a repressor and allowing an activator to bind the
promoter. Similarly, negative control results in detachment of the
activator and binding of the repressor to turn off transcription.
Inducible genes encode enzymes involved in catabolic pathways.
These genes...
Bacterial cells couple the process of transcription and
translation. In eukaryotic cells, the process of transcription and
translation are uncoupled or occur separately. Provide explanations
as to why bacterial cells can couple the process of transcription
and translation while in eukaryotic cells, the process is
separated.
“Coupled transcription-translation” means _,
and the coupling contributes to gene expression regulation via
___.
A
transcription can start before the end of translation, lacI
repression
B
translation can start before the end of transcription,
attenuation
C
translation can start before the end of transcription, CRP
activation
D
transcription can start before the end of translation, LacI
repression
E
translation can start only after transcription is achieved,
attenuation
Which of the following elements can terminate transcription in
prokaryotes? It is ___...