Transcript Unit III: Cells

Unit 3: Cells
The 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 Holland
Discovered ________________ 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 Theory
a. All organisms are ______________________________
Multicellular or Unicellular
b. The cell is the _______________________ / structure of
organisms.
____________ happens within a cell
All 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 _________________ with
membranes
- _____________, 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 vacuole
contain 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 membrane
a. separates cells from its surroundings - like the skin
- makes it possible for the inside of the cell to be
_____________________ than the outside
b. two layered structure composed of ________ and
________
fluid mosaic model = proteins and lipids move
around
proteins on outside act as receptors (pick up info)
c. Maintains homeostasis
by controlling the ________
of materials into and out of
the cell.
Amazing Cells