Which of the following cells shows the presence of a nucleus?
prokaryotic cell
eukaryotic cell
both prokaryotic and eukaryotic cell

When plants use sunlight to make food, the energy of sunlight is

Select the correct answer from each drop-down menu. the lac operon in e.coli regulates genes that code for enzymes required for breakdown of lactose. the lac operon is operon that is activated in the presence of .

An alaskan spruce forest will burn easily once burned the forest regenerates fairly wuickly which statement best describes haw an alaskan spruce forest reacts to fire? it is resilient