All about Cells
Name 3 different kinds of cells
Plant, human, bacterial, animal
Define cell.
A cell is the smallest functional and structural unit of all living organisms.
Who invented the microscope and in what year?
Robert Hooke, 1665
Compare and contrast unicellular and multicellular
Unicellular: single celled organism
Multicellular: made up of one or more cells
What is the outside layer of a cell called?
Cell Membrane
Define organisms.
An organism is any living thing
Who was the first person to see living cells under a microscope?
Anton Van Leeuwenhoek
Identify the common parts of all cells
Cell membranes, cytoplasm, membrane-bound organelles. and DNA
What is the fluid region inside the cell called?
Cytoplasm
Define cytoplasm.
The cytoplasm is the region of the cell membrane that includes fluid and all the organelles.
Who stated that all cells come from existing cells?
Rudolf Virchow
Why are most cells small?
Cell size is limited by the cell's outer surface area
What is the genetic material called inside the cell?
DNA
Define cell membrane.
Cell membrane is the protective layer that covers a cell's surface and acts as a barrier.
Who stated that the cell us the basic unit of all living things?
Theodor Schwann
Which cell does not have a nucleus?
Prokaryote
Name the 3 parts of cell theory
1. All organisms are made up of one or more cells
2. The cell is the basic unit of all organisms.
3. All cells come from existing cells.
Define organelles.
An organelle is a small body in the cell's cytoplasm that is specialized to perform a specific function.
Who stated that plants are made up of cells?
Matthias Schleiden
Compare and contrast a prokayotic cell to a eukaryotic cell.
Prokaryote: does not have a nucleus, DNA in cytoplasm
Eukaryote: does have a nucleus, DNA in nucleus