Concept explainers
To review:
Definitions of the following terminologies:
(a) Transcription factor
(b) Response element
(c) Signal molecule
(d) RNA (ribonucleic acid) interference
(e) Ribosome
Introduction:
The process of transcription leads to the synthesis of RNA from DNA. The DNA double helix unwinds and one of the strands acts as a template. This process is carried out with the help oftranscription factors andinvolves DNA sequences termed as response factors. The mRNA formed gets translated into proteins with the help of cytosolic ribosomes. The process of regulation of gene expression involves transcription factors, responseelements, and signal molecules, which act to control the synthesis of gene products. RNA interference is also a mode of gene silencing.
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Biochemistry: The Molecular Basis of Life
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