The choices can be found elsewhere and as follows:
<span>(1.) synthesis
(2.) digestion
(3.) excretion
(4.) respiration
</span>
I believe the correct answer is option 1. <span>As a direct result of synthesis process, a plant makes a variety of chemical substances such as poisons,drugs, and flavorings. Hope this answers the question.</span>
Answer:
The correct answer is a) the inducer prevents the repressor from binding to the operator
Explanation:
In lac operon lac I gene synthesize repressor protein that binds to the operator region of the lac operon and inhibits the transcription of the mRNA by partially blocking the promotor region of lac operon where RNA polymerase binds.
When the inducer is present it binds to the repressor protein and makes a conformation change in the protein as a result repressor protein is not able to bind the operator region of the operon and do not able to block the transcription of the lac operon.
Therefore in the presence of inducer transcription of operon occurs so the right answer is a) the inducer prevents the repressor from binding to the operator.
C. tRNA
The ribosome binds to mRNA at a specific area. The ribosome starts matching tRNA anticondon sequences to the mRNA condom sequence. Each time a new tRNA comes into the ribsome, the amino acid that it was carrying gets added to the elongating polypeptide chain.
