AP BIOLOGY

Detailed explanation-1: -The invention of the microscope led to the discovery of the cell by Hooke. While looking at cork, Hooke observed box-shaped structures, which he called “cells” as they reminded him of the cells, or rooms, in monasteries. This discovery led to the development of the classical cell theory.

Detailed explanation-2: -Then, in the 1950s, a new type of the microscope was invented. Called the electron microscope, it used a beam of electrons instead of light to observe extremely small objects. With an electron microscope, scientists could finally see the tiny structures inside cells.

Detailed explanation-3: -Two types of electron microscopy-transmission and scanning-are widely used to study cells. In principle, transmission electron microscopy is similar to the observation of stained cells with the bright-field light microscope.

Detailed explanation-4: -Microscopes can provide magnifications of 40x to 1000x, which are necessary to see some species since they are so minute. Microscopes allowed scientists to investigate cell structure, observe the tiniest details of plants, animals, and fungi, and learn about the presence of microbes.

Detailed explanation-5: -Which best describes the importance of the microscope to the development of the cell theory? Cells are too small to see with the naked eye, and a microscope magnifies them.