A. M checkpoint
I just answered this question doing a test on Plato.
The type of enzyme that are
synthesized in an environment where an operon codes for enzymes that synthesize
a protein from precursor amino acid molecules are the repressible enzymes. It binds
to the operator and blocks attachment of RNA polymerase to the promoter,
preventing transcription of the genes.
Chronic obstructive pulmonary disease (COPD) is a term used to describe progressive lung diseases including chronic bronchitis for this case.
