Option D is the one most accurately describing Lac Operon.
The lac operon is known as an inducible system. Since Lac operon is an inducible system, it will only activate in the presence of a key molecule . The key molecule, lactose, induces the Lac operon to be activated.
Once lactose binds to the repressor, it causes it to be removed. RNA polymerase is then able to access the genes in the Lac operon and transcribe them in RNA and eventually proteins.
Answer:
his continental drift
Explanation:
Wegener used fossil evidence to support his continental drift hypothesis. The fossils of these organisms are found on lands that are now far apart. ... Wegener suggested that these creatures were alive in warm climate zones and that the fossils and coal later had drifted to new locations on the continents.
3 is parasitism, 2 is mutualism, and 1 is commensalism.
Amino acids that have the possibility of participating in hydrogen bonds with suitable partners are those that have hydrophilic polar side chains.
