in order for cells to carry out the functions needed to sustain life, which of the following must be present in the cell? a cell wall b nucleus c dna and or rna or d flagella which of the following must be present in the cell? a cell wall b nucleus c dna and or rna or d flagella

How do antiviral drugs work? in your own words.

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .