Download PowerPoint Presentation of In and Around Cells

What am I?
Monarch Butterfly
What am I?
Orange
What am I?
Sponge
What am I?
Onion
ALL living organisms are made up
of cells!!!
In and Around Cells
A lesson presented by…
What is a cell?


A cell is the smallest unit capable of
performing life functions.
The cell theory states the following:



All living organisms are made up of cells.
Cells are the basic unit of structure and
function in an organism.
All cells arise from other cells.
What does a cell do?

Cells take in nutrients, convert
those nutrients into energy,
reproduce, grow and produce
proteins that are essential to life's
functioning.
Cell Identification

Plant Cell

Animal Cell
What is inside a cell?

Cells are made up of parts called
organelles or “little organs”.
Cell Membrane

The outer boundary of the cell that
controls the movement of materials in and
out of the cell. Found in both plant and
animal cells.
cell membrane
x
Cytoplasm

The fluid within the cell that contains
organelles and aids in moving things
around in the cell.
cell membrane
cytoplasm
x
Mitochondrion

Contains the energy to power the cell's
activities. It changes the energy stored in
food compounds into a useful form of
food. Found in both plant and animal cells.
cell membrane
cytoplasm
mitochondrion
x
Nucleus

One of the larger organelles found in all
cells. It is usually the shape of a sphere
and contains the cell's genetic material. It
is the control center of the cell. Found in
both plant and animal cells.
cell membrane
cytoplasm
mitochondrion
nucleus
x
Cell Wall

The tough, rigid outer covering that
surrounds the cell membrane of plant
cells. It protects plant cells and helps the
plant keep its shape.
cell membrane
cytoplasm
mitochondrion
nucleus
cell wall
x
Chloroplast

Green oval-shaped structures that enable
plants cells to make sugars through
photosynthesis.
cell membrane
cytoplasm
mitochondrion
nucleus
cell wall
chloroplast
x
Vacuole

A sac that absorbs water, stores proteins,
ions and waste products. These organelles
are large in plant cells and small in animal
cells.
cell membrane
cytoplasm
mitochondrion
nucleus
cell wall
chloroplast
vacuole
x
Ribosomes

Tiny ball-like structures found in both
plant and animal cells. Proteins are formed
in these organelles.
cell membrane
cytoplasm
mitochondrion
nucleus
cell wall
chloroplast
vacuole
ribosomes
x
What size is a cell?

Cells come in many sizes….
Looking at cells with a
QX5 microscope
What shape is a cell?

Cells come in many shapes...
skin (cheek) cells
Orchid cells
plant root cells
stomach cells
Activity: Investigating Cell Shapes
Area = Side x Side
Area = Length x Width
Area
Area = ½ (Base x Height)
Area = π (radius2)
Area of a Square
Area = Side x Side
A = S x S OR S2
A = 10 cm x 10 cm
OR 102
A = 100 cm2
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
Triangle
Circle
Distance Around the
Shape (in centimeters):
Area of a Rectangle
Area = Length x Width
A=LxW
A = 15 cm x 5 cm
A = 75 cm2
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
Triangle
Circle
75 cm2
Distance Around the
Shape (in centimeters):
Area of a Triangle
Area = ½ (Base x Height)
A = ½ (B x H)
A = ½ (15 cm x 10 cm)
A = ½ (150)
A = 75 cm2
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
75 cm2
Triangle
75 cm2
Circle
Distance Around the
Shape (in centimeters):
Area of a Circle
Area = π (radius2)
A = π (r2)
A = π (6.5 cm)
2
A = π (42.25 cm2)
A = 3.14 x 42.25 cm2
A = 132.67 cm2
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
75 cm2
Triangle
75 cm2
Circle
132.67 cm2
Distance Around the
Shape (in centimeters):
Distance Around
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
75 cm2
Triangle
75 cm2
Circle
132.67 cm2
Distance Around the
Shape (in centimeters):
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
Rectangle
75 cm2
Triangle
75 cm2
Circle
132.67 cm2
Distance Around the
Shape (in centimeters):
40 cm
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
40 cm
Rectangle
75 cm2
40 cm
Triangle
75 cm2
Circle
132.67 cm2
Distance Around the
Shape (in centimeters):
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
40 cm
Rectangle
75 cm2
40 cm
Triangle
75 cm2
40 cm
Circle
132.67 cm2
Distance Around the
Shape (in centimeters):
Activity: Investigating Cell Shapes
Shape:
Area of the Shape
(in square centimeters):
Square
100 cm2
40 cm
Rectangle
75 cm2
40 cm
Triangle
75 cm2
40 cm
Circle
132.67 cm2
40 cm
Distance Around the
Shape (in centimeters):
What have we learned
about a circle?


It is the shape that covers the
largest area in relation to the
distance around it.
It maximizes its space!
What would be the best
shape for a cell?

Let’s think about the function of the
cell membrane again…
-the outer boundary of the cell that controls the
movement of materials in and out of the cell.
So, why aren’t all
cells circular in shape?
Get ready
to test
your
Cell IQ!!!
Question 1:
All living organisms are made up of
cells.
A. True
B. False
Question 1:
All living organisms are made up of
cells.
A. True
Question 2:
According to the Cell Theory…
A. All cells have cell walls.
B. All cells arise from other cells.
C. All cells have a nucleus.
Question 2:
According to the Cell Theory…
B. All cells arise from other cells.
Question 3:
You can see most cells without a
microscope.
A. True
B. False
Question 3:
You can see most cells without a
microscope.
B. False
Question 4:
Plant cells have organelles (parts) that
animal cells do not.
A. True
B. False
Question 4:
Plant cells have organelles (parts) that
animal cells do not.
A. True
Question 5:
Which of the following choices is not a
part of a cell?
A. Lung
B. Vacuole
C. Chloroplast
Question 5:
Which of the following choices is not a
part of a cell?
A. Lung