1. Eukaryotic Cells
vs.
Prokaryotic Cells

2. Cell Theory
 Cells are the basic units of living
organisms.
 The cell theory states that:
All living things are made of one or more cells.
Cells are the basic unit of structure and
function in living things.
All cells come from other cells.

3. Cell Types
 Two categories:
1. Cell that have
membrane-bound organelles
 Called Eukaryotic Cells
2. Cells that do not have
membrane-bound organelles
 called prokaryotic cells
 Unicellular organisms such as
bacteria are examples of
prokaryotes.

4. Cell Types
 Eukaryotic cells-
 Cells that contain organelles which are held together
by membranes
 Examples include plant and animal cells.

5. Eukaryotic Cell Structure
 The plasma
membrane/cell
membrane
 the flexible boundary of a
cell
 separates a cell from its
surroundings

6. Plasma Membrane/Cell Membrane
continued:
 allows nutrients to enter the cell and waste
to be removed
 This is referred to as selective permeability.
*(Selective=Chooses, Permeability=filter through)*
 keeping a healthy balance of nutrients and
water within the cell is called homeostasis

7. Overview of Organelles
 Nucleus-
 Largest organelle in the cell and it is the most inner
compartment of the cell
 contains chromatin (DNA); genetic information on
strands called chromosomes
 “control center” for cell metabolism and reproduction
 Chromatin- Directions on how to make proteins
 Nucleolus- Found inside nucleus; ribosomes are
made here

8. Overview Cont’d
 Ribosomes- make proteins (made up of RNA and protein);
thought of as “factories”
 Cytoplasm- clear gel like fluid inside the cell, which suspends
all organelles
 Endoplasmic Reticulum- extensive network of
membranes
 Rough ER: with ribosomes
 Smooth ER: with no visible ribosomes
 Golgi Apparatus- sorts proteins made by the ribosomes
and sends them to needed places in the cell

9.  Lysosomes- organelles that are filled with digestive
enzymes to remove waste and invading bacteria
 Mitochondria- often referred to as the “powerhouse” of
the cell
 release energy for the cell
 It converts the energy stored in glucose into ATP for the cell
 Vacuoles- fluid filled organelles enclosed by a
membrane
 Store materials such as food, sugar, water, and waste products

10. Eukaryotic plant cell
 Plant cells are also Eukaryotic cells, but plant
cells contain some organelles that are not found
in animal cells.

11. Plant Cell Organelles
 Cell wall- rigid wall outside the plasma membrane. It
provides the cell with extra support.
 Chloroplasts- captures light and energy; and
converts it into chemical energy.
 Chlorophyll- green pigment found inside the
chloroplast.
 Plastids- organelles that store things such as food in
the plant cell.

12. Poster project
 Create a 3 part poster comparing and
contrasting the structures/organelles of
each cell (prokaryotic, animal and plant)
 Identify the shape of each cell
 Identify the structure and function of
each organelle in the eukaryotic cells
 Point out differences between organelles
in the plant and animal cell

14. Poster example 1:

15. Poster example 2:
/wcsstore/

16. Bacterial cell Animal cell Plant cell