Cells Cell Theory Cell Type
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11 Terms
What are cells?
Cells are the basic unit of life; all organisms are made up of cells.
What are prokaryotic cells?
Prokaryotic cells are simple cells without a nucleus or membrane-bound organelles, containing 'naked DNA' found in the cytoplasm.
What are eukaryotic cells?
Eukaryotic cells are much larger cells (100x) with a defined nucleus and organelles surrounded by membranes. The DNA in eukaryotic cells are found in the nucleus.
What is cell theory?
Cell theory states that all organisms are composed of one or more cells; the cell is the basic unit of structure and organization in organisms; and all cells come from preexisting cells.
Who named the cell?
Robert Hooke named the cell.
Who made the microscope?
Leeuwenhoek invented the microscope.
What did Schleiden claim?
Schleiden claimed that 'all plants are made of cells.'
What did Schwann claim?
Schwann claimed that 'all animals are made of cells.'
What did Virchow claim?
Virchow claimed that 'cells come only from living cells.'
What is the nucleus?
The nucleus is a membrane-bound structure in eukaryotic cells that contains genetic material.
What are organelles?
Organelles are specialized structures within a cell that perform distinct processes.
