Today’s ObjectiveGiven information about the

development of cell theory, summarize the contributions of scientists and/or state the cell theory.

Muhammad Asif

Cell theory

Presented by:

Muhammad Asif

Muhammad Asif

Early Scientists

Muhammad Asif

Anton van Leeuwenhoek

First compound light microscope

Muhammad Asif

Robert HookeCoined the term “cell”

Muhammad Asif

Matthias Schlieden

All plants are made of cells

Muhammad Asif

Theodor SchwannAll animals are made of

cells

Muhammad Asif

Rudolf VirchowCells can only arise from pre-existing cells

Muhammad Asif

Cell Theory1. The cell is the basic unit of

structure.2. The cell is the basic unit of

function.3. All cells arise from pre-

existing cells.Muhammad Asif

Spontaneous Generation?

Francesco Redi

Muhammad Asif

Muhammad Asif

Germ Theory of Disease

Microscopic organisms cause diseases.

Pasteur

Muhammad Asif

Muhammad Asif

Why do we care today?

Muhammad Asif

Muhammad Asif