Cell Flashcards
In what year was the compound microscope invented and by who?
In 1590 by Jamesen
When was the words “Cell” first used?
In the year 1665 by Robert Hooke
to describe his basic unit.
Anthony Van Leeuwenhoek
1650 to 1700
Using simple lens observed the nuclei and unicellular organisms including bacteria.
In what year was bacteria first described as animalcules?
1676
In what year was the Cell theory reproduced and by who?
1838 – 1839
Mathias Schneider
Theodore Shwann
What is a Cell?
A cell is the basic structural and functional unit of the body.
What are the two categories of the cell?
•Prokaryotic
•Eukaryotic
The Cell theory
•The cell is the basic structural functional unit of all living organisms
•All living organisms are composed of cells, either they exist as unicellular or multicellular organisms
•All existing cells come from pre-existing cells
•All cells contain genetic information that can be passed from generation to generation
What are Prokaryotic cells?
They do not contain true nucleus or other distinct organelles except Rhizomes.
What is the size range of prokaryotic cells?
0.0001 to 0.003 millimeters
What are Mesosomes?
They are artifacts to created when the cells are prepared for viewing rates electron microscope.
What are the two types of transportation in cell?
•Passive transport
•Active transport
What are Ribosomes?
They are emerged in the cytoplasm, organelles having tiny bead-like structures, they are the cell protein factories.
