Question

What technological advancement was necessary before scientists could begin to observe cells? invention of the magnifying glass invention of the microscope invention of the telescope invention of the thermometer

Answer 1

invention of the microscope because without it you can't even see the cells in the body or on anything other living organism.

Answer 2

invention of the microscope

Step-by-step explanation:

Cells of living beings vary in size. However, most of the cells are microscopic in nature and can not be seen with unaided eyes. Microscope amplifies the image and allows us to observe the tiny cells and cell organelles and other structures present in them. The ultra-structure of cells could not be studied without a microscope.