Question

What can happen if the TRP Operon is turned on?

Answer 1

Hint: The expression of numerous structural genes in the operon is controlled by a single promoter, operator, and repressor. Operator, promoter, and structural gene are the three main components of an operon. Prokaryotic operons are mostly transcribed into polycistronic mRNA, while eukaryotic operons are mostly translated into monocistronic mRNA.

Complete answer:
When tryptophan levels are low, the Trp operon is activated.
The genes are expressed, transcription is started, and tryptophan is synthesised when the Trp operon is turned on.
The tryptophan operon is responsible for tryptophan synthesis. The operon is autoregulated, which means it turns on when the quantity of tryptophan present is less than the needed amount and turns off when the amount of tryptophan present is greater than the required amount.
When the repressor is inactivated, the operon will be switched on (the genes will be expressed). Positive regulation means that genes are only expressed when the active regulatory protein, such as the activator, is present.
Additional information:
Operon refers to a collection of genes that function together. It consists of structural genes (which normally code for enzymes), regulatory genes (which code for activators or repressors, for example), and regulatory sites (such as promoters and operators). The operon's response when no regulatory protein is present determines the type of regulation.

Note:
Operons are divided into two categories:
Inducible - This form of operon is activated in the presence of an inducer, such as a hormone. Lactobacillus coagulans operon.
It is frequently found in anabolic pathways and is repressible. The cell's functional product or enzyme is present, and the operon is operational. The operon is shut off when the final product reaches its maximum value. E.g., Trp is a transcription factor.