Examlex
At one instant an object in free fall is moving downward at 50 meters per second.One second later its speed should be about
Microorganism
A simple form of life, commonly made up of a single cell and so small that it can be seen only with a microscope.
Pathogen
A microorganism capable of causing disease.
Prokaryotic Cells
Simple, single-celled organisms without a nucleus or other membrane-bound organelles, such as bacteria.
Organelles
Specialized structures within a cell that perform specific functions.
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