The basic unit of life is the cell. In 1838, scientists Theodor Schwann and Matthias Schleiden came up with the original version of the cell theory, which concluded that the basic unit of living things is the cell.
Robert Hooke first saw these units in his microscope study of slices of cork and named them "cells." Anton van Leeuwenhoek used his microscope to see cells in a drop of water. With the advent of technology, including better microscopes and specimens, the cell theory took form.
The original cell theory had some flaws that were worked out later by Rudolph Virchow. The modern cell theory presents several observations about the cell. Cells make up all organisms, they are the structural and functional units of living things, and cells can come only from other existing cells and do not generate spontaneously.Learn More
The cell theory states that the cell is the basic unit of life. Hans and Zacharias Jansen greatly contributed to the various parts of this theory by inventing the first microscope.Full Answer >
Cell theory states that all living organisms are made up of cells and that the cell is the basic unit of life. It also states that all cells arise from preexisting cells. The formulation of this theory is not attributed to Anton van Leeuwenhoek, but his pioneering work with microscopy was essential in its development.Full Answer >
Cell membranes are, at their most basic, composed of a phospholipid bilayer with some surface proteins embedded around the surface. Plasma membranes contain phospholipids, cholesterol, proteins and carbohydrates that are arrayed in regular, repeating rows to form a highly plastic surface for the cell.Full Answer >
A cell spends most of its life in the interphase stage where it is able to grow, create DNA and obtain nutrients in preparation for cell division. Interphase is not a part of meiosis or mitosis, but rather a stage that lets the cell perform required functions for reproduction.Full Answer >