Organism is a contagious living system such as an animal, plant, fungus, protist, archaeon, or bacterium
A Unicellular is an organism that consists of one cell.
A multicellular organism is made up of many cells
A Microscopic Organism cannot be seen by the human eye without the use of microscope.
Ex. euglena
A Macroscopic Organism can be seen by the human eye.
Ex. multicellular organism like animals
A Microscope is an instrument used to magnify a tiny object.
The Romans discovered the first lens.
Lens was derived from the latin word lentil – as it represents the shape of a lentil bean.
ZachariasJanseen made the first compound microscope.
Robert Hook is known to built his own microscope. He used thin slices of cork as a specimen in his microscope.
Cellula means small compartment. It eventually became the word “cell”.
Micrographia is one of the first detailed handbook on microscopy and imaging.
Anton Van Leeuwenhoek is a scientist who studied the bacteria, blood cell, and protist.
MatthiasJakobSchleiden, a professor of botany in Germany. He stated that all plants are composed of cells.
TheodorSchwann is a professor of physiology at the University of Belgium. He studied several slides of animal tissues in which he stated that animals are composed of cells.
All organisms are made up of cells.
The basic unit of life is cell.
All cells come from pre-existing cells
Rudolf Ludwig Karl Virchow, postulated the Idea of Omnis cellula e cellula (All cells come from cells)
Theory of SpontaneousGeneration states that organisms came from non-living things
Francesco Redi
Disproved the theory that maggots could be spontaneously generated from meat using a controlled experiment
John Needham
Believed that life can arise spontaneously
Repeated Redi's experiment but yielded different result because he was not successful in killing all microbes while boiling broth
Lazzaro Spallanzani
Disagreed to the theory of spontaneous generation after observing absence of small organisms in some chicken broth placed in sealed flasks heated for 30 minutes
Louis Pasteur
Disproved spontaneous generation through an experiment where beef broth was sterilized through boiling in two flasks, one that was exposed to air and another that was protected from it