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.
Ribosomes form protein within the cell my guy
Answer
The correct answer would be auricle and auditory canal.
The auricle or pinna is the externally visible part of the ear. it is mainly composed of cartilages and integuments. It is connected to the surrounding parts with the help of muscle and ligaments.
It helps in focusing the most of the sound vibrations towards inside the ear.
It opens into the auditory canal which serves as the pathway for sound waves to the inner ear (tympanic membrane).
DNA helps to build the genetic structure of organisms. DNA tells the cells of the organism how to act and what to do.
I hope that helped.