Question: Cells vary in size as well as shape, but all cells are very small, and bacteria are single-cell microorganisms that are so small they can only be seen with a microscope. Given these facts, cells vary in size and shape and can only be seen with what among the following options: - a microscope - heightened senses - a telescope lens - colors - Solar energy - by indirect light - a good eye - A computer
Answer:
a microscope