c. The distance across the total area one can observe (field of vision) when looking through a microscope is referred to as the

i think it is dna, i'm not totally sure but i think it might be.

the cell is the smallest structural and functional unit of living organisms, which can exist on its own. therefore, it is sometimes called the building block of life. some organisms, such as bacteria or yeast, are unicellular—consisting only of a single cell—while others, for instance, mammalians, are multicellular.