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Intro to Cells

3.1 Study

QuestionAnswer
What did Robert Hooke do? first to name them cell
Robert Hooke English scientist (1665)
What did Anton Van Leeuwenhoek do? first to look at living cells - tiny livings thing animalcules (bacteria now)
Anton Van Leeuwenhoek Dutch Lens Maker (1675) - looked at pond water
German botanist Matthias Schleiden - all plants are made up of cells
German zoologist Theodor Schwann - all animals are made up of cells
German doctor Rudolf Virchow - cells come only from existing cells
Until what year were Hooke and Van Leeuwenhoek's results appreciated? 1830's
Cell theory? 1. All organisms are made of one or more cells. 2. All life functions of organisms occur within cells. 3. All cells come from already existing cells.
What determines the shape of a cell? Its function - Nutrients and oxygen need to pass through Everything entering/leaving must past through outer barrier (cell membrane) Need a large surface area and a small volume for materials (in/out quickly) Have high surface area to volume ratio
What limits the cell size? a surface area bottom ratio
What are we made off? Eukaryotic - more complex (able to be seen)
What determines shape? Cell function determines shape
Indication of cell shapes diversity? how life has evolved to perform many different jobs
Which is older Prokaryotic or Eukaryotic cell? Prokaryotic - 3.5 billions older. Eukaryotic is 1.5 billion.
Does a Prokaryotic contain a nucleus? No nucleus- DNA in cytoplasm
Which is the basic - no membrane bound organelles - only single celled cell? Prokaryotic
Which is the more complex cell - with a nucleus - membrane bound organelles - both singled and multi-cellled? Eukaryotic
What are the 4 common structures that both prokaryotic and eukaryotic cells share? 1. Plasma membrane 2. Cytoplasm 3. Ribosome 4. DNA
Created by: sherlynwantsleep
 

 



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