Unit 3: Cells

Unit 3: CellsThe basic building block of life

A. Cell Theory

Discovery of the _________ allows scientists to first view cells.

How big are cells?

SMALL - ________ (large plant cells) _______ (small bacteria)

1. Time Line and People of the Cell Theory a.___________________ –

1600’s in HollandDiscovered ________________ and blood cells through high power simple microscopes.

b. _______________ –

English scientist in the 1665

Looked at _______ under the microscope

_____________________

d. _______________ - 1838 Germany

“_____________ were composed of cells”

e. _______________ - 1839 Germany

“____________ were composed of cell.”

2. Cell Theorya. All organisms are ______________________________

Multicellular or Unicellular

b. The cell is the _______________________ / structure of organisms.____________ happens within a cellAll cells carry on ___________________________

c. Cells come from __________________ cells.Belief that life started as single cells and evolved over

millions of years.

3. Exceptions to the Cell Theory

a. ___________

Small and not made

of cells, but has the

ability to perform life

functions

b. Where did the __________ come from?

_____________________

life comes from inanimate objects

B. Types of Cells 1.______________ – Prokaryotes

- cells that _________________ withmembranes- _____________, but they do have

DNA- __________ in size, less complex - ex: bacteria and blue-green algae

2. ________________ – Eukaryotes- cells containing __________________ (organelles) surrounded by membranes (have membrane bound organelles)- _____________ and other organelles for specialized chemical reactions- these are the cells you are familiar with because ______________________.- _________________- ex: protists, fungus, plants, animal cells

C. Cell Organelles (Organelle = “small tool”; perform life functions)

1. ____________ = nuclei (pl)

round membrane bound structure

____________ for metabolism and reproduction

if removed cell dies

contains ________

2. ______________ __________ material in the cell site for many _________________

3. ______________________ = system of fluid filled canals enclosed by membranes - serve as paths for the ____________ of materials - rough or smooth appearance;

__________ make it rough

4. ______________ = small particles

sites of ________________

lots of them

5. ____________ stacks of ___________________ (pancakes) processing, ___________________ centers

6. _____________fluid filled membranous sacs____________________________Vessicle = small vacuole

7. ____________specialized vacuolecontain strong __________________White blood cells have

lysosomes that break down bacteria

8. _______________round, oval shaped organelles

site for ________________ release energy in food molecules makes ________

Cellular Respiration:– ADP ATP High Energy Bond– Make energy for the cell– C6H12O6 + 6 O2 36 ATP + 6 H2O + 6 CO2

9. ________________ contain _____________ pigment = catches light site for photosynthesis only in plant cells

a. Photosynthesis:Conversion of light energy into a useable form

for the cell. 6 CO2 + 6 H2O + Light C6H12O6 + 6 O2

Photosynthesis and Respiration are opposite formulas

10. _____________

protein rod pairs that are at 90 degrees to each other

only in ____________ involved in cell division (mitosis).

11. Cilia and Flagella

________________ used for moving the cell

flagella are larger; cilia are usually smaller and more plentiful.

12. ____________

located outside the membrane

gives shape and provides support

Not in Animal Cells.

13. ________________ = plasma membranea. separates cells from its surroundings - like the skin- makes it possible for the inside of the cell to be _____________________ than the outsideb. two layered structure composed of ________ and

________fluid mosaic model = proteins and lipids movearoundproteins on outside act as receptors (pick up info)

c. Maintains homeostasis by controlling the ________of materials into and out ofthe cell.

Amazing Cells