Download Unit 2 Biology Notes Cell Theory

Unit 2 Biology
Notes
Cell Theory
Objective 2: Explain the
components of the cell
theory.
Cell Theory
One of the most fundamental
concepts of biology states:

All living things are composed of
cells.

Cells are the basic units of
structure and function in living
things.

New cells are produced from
existing cells.
Unit 2 Biology
Notes
Cell Parts
Objective 3: Identify and
explain the major
functions of the
following cell parts:
Nucleus, Cell
Membrane, Cell Wall,
Chloroplast,
Mitochondria, Ribosome,
and Vacuole
Use the following colors to
color the plant and animal
cell pictures :

Plant Cell:

Animal Cell:

1- light blue

1- orange

2- brown

4- dark blue

5- dark blue

5- black

6- black

6- pink

8- pink

8- light blue

10- purple

9- light yellow

11- green

11- purple

12- orange

13- light yellow
Cell Types
Specialized structures that perform
important cellular functions
Cell Parts

1- Cell Wall

2- Cell Membrane

3- Mitochondria

4- Vacuole

6- Cytoplasm

8- Nucleolus

9- Nucleus

11- Ribosome

12- Chloroplast
Label the structures on the
plant and animal cell
pictures :

Plant Cell:

Animal Cell:

1- Vacuole

1- Mitochondria

2- Cell Wall

4- Nucleus

5- Nucleus

5- Ribosome

6- Ribosome

6- Cell Membrane

8- Cell Membrane

8- Vacuole

10- Nucleolus

9- Cytoplasm

11- Chloroplast

11- Nucleolus

12- Mitochondria

13- Cytoplasm
Unit 2 Biology Notes
Animal Cells vs.
Plant Cells
Objective 5: Use two
characteristics to
distinguish between
animal and plant cells.
a.
Presence of Cell Wall
b.
Presence of
Chloroplasts
Animal Cell
Nucleus
Ribosome (free)
Cell membrane
Ribosome
(attached)
Mitochondrion
Animal Cell
Plant Cell
Nucleus
Ribosome (free)
Ribosome
(attached)
Cell wall
Cell membrane
Chloroplast
Mitochondrion
Vacuole
Plant Cell
Plant Cell
Animal Cell
Unit 2 Biology
Notes
Cell Types
Objective 5: List and use
3 characteristics to
distinguish prokaryotic
and eukaryotic cells.
Cell Types

Cells are divided into two major categories:
Prokaryotes and Eukaryotes.

Major Characteristics of These Types of Cells
Characteristic
Prokaryotic
Eukaryotic
Presence of
Nucleus
No
Nucleus
Nucleus
Size
Small
Larger
Complexity
Very simple—no
membrane-bound
organelles*
More complex—
has membranebound organelles*
Prokaryotic Cell
Cell
membrane
cytoplasm