Download Biology Notes: Cell History

Name: ___________________________________________________ Date: _______________ Period: ________ Biology Notes: Cell History Directions: Fill out as we cover the following topics in class. Corresponds to pages 70 ‐ 72 in your text. Cell History Additional Info: • All _______________ is made of _______________ • Cells _______________ after microscope _______________ • 1665: Robert _______________ first observed _______________ (dead tree bark) – Boxes he saw _______________ him of tiny _______________ – He named the empty boxes “_______________” Cell Theory • Three Parts: 1) All _______________ are made of _____ or _______________ cells 2) The cell is the most _______________ unit of _______________ 3) Cells come from _______________ cells What’s the big _______________ with this _____________? Cell Diversity • _______________ depends upon _______________ •
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Nerve Cell –
Shape: Elongated _______________ –
Function: Sends _____________ to and from ______________ –
Advantage: Signals can travel a _______________ of _______________ •
Red Blood Cell –
Shape: _______________ –
Function: Carries ____________ throughout _______________ –
Advantage: _______________ through narrow _______________ & arteries •
Skin Cell – Shape: _______________& _______________ –
Function: _______________ and _______________ the body –
Advantage: _______________ layers cover more _______________ Cell Categories • 1) Prokaryote: Cells without a _______________ and other _______________ bound organelles –
First cells/_______________ on Earth (oldest fossils = ~_______________ b.y.o) –
AKA: _______________ •
2) Eukaryote: Cells _______________ a nucleus & _______________ bound organelles –
More _______________ cells –
Evolved from _______________ –
Ex: _______________, Fungi, _______________, Animals Eukaryote Evolution • Endosymbiosis Theory: _______________ & _______________ were free‐living organisms •
Evidence: Mitochondria & chloroplast contain own _______________, _______________, contain own _______________. •
The Process –
Larger cell _______________ chloroplast & mitochondria –
Larger cell now has an _______________ in its environment –
Each continued to _______________ • Over time, each has become _______________ on the other Review 1) Who first identified cells? 2) What was he/she examining? 3) Name the three parts to the cell theory. 4) Explain how the shape of a blood cell allows it to perform it’s job better. 5) Which category of cells contain nuclei? 6) Why are bacteria considered the oldest forms of life on Earth? 7) How do prokaryotes and eukaryotes differ? 8) Which organelles are associated with the endosymbiosis theory? 9) What evidence exists that the organelles from #8 were once free‐living? Additional Info: