Download Lesson 3 | Impacts on Water

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Lesson Outline
LESSON 2
Cell Theory and Cells
1. Understanding Cells
a. English scientist _________________________________ first identified cells over 300 years ago while
looking at cork under a ___________________ he built.
b. He saw ___________________-like openings. They reminded him of small rooms, so he called them
___________________.
c.
After Hooke’s discovery, other scientists began to use better ___________________ to identify different
___________________ in the cells of plants and animals.
d. Over time, they developed ___________________.
2. Cell Theory
a. Cell theory includes ___________________ principles.
i.
ii.
iii.
b. They learned many things about cells.
i. There are two major types of cells, _______________________ cells and
_______________________ cells.
ii. All cells have DNA, a ________________________to protect them, and are filled with a jelly-like
substance called ___________________.
iii. Some cells have special structures that do specific jobs, called ___________________.
iv. Plant and animal cells have ___________________ structures
3. Two Types of Cells
a. Prokaryotic Cells are very ___________________ and very ___________________ cells.
i. They were the ___________________ cells to evolve.
ii. They are mostly ___________________.
iii. They do not store their DNA in a ___________________ (an area in the center that holds DNA)
iv. They do not have ___________________ (cell organs)
v. They are ___________________.
vi. All have a hard cell wall on the outside for ___________________.
vii. Some have ___________________ (whip-like tails used for ___________________)
b. Eukaryotic Cells are any cell that is not a bacteria.
i. They are more ___________________ that prokaryotic cells.
ii. They can be ___________________ or ___________________.
iii. They store their DNA in a ___________________ (an area in the center that holds DNA)
iv. They have ___________________ (cell organs)
v. All have a hard ___________________on the outside for protection.