Download of the cell - Trailblazers

Cells are the
basic building
block of life.
All living things
are made of cells
Did you know that all cells
come from preexisting cells
through cell division?
Cells, Cells, Cells
Examples of Cells
Amoeba Proteus
Plant Stem
Bacteria
Red Blood Cell
Nerve Cell
{
Prokaryotic
{
Eukaryotic
Two Types of Cells
Prokaryotic
Do not have
structures surrounded
by membranes
Few internal
structures
One-celled
organisms, ex Bacteria

http://library.thinkquest.org/C004535/prokaryotic_cells.html
Eukaryotic
Contain organelles surrounded by membranes
 Most living organisms
 Multi-cellular

Plant
Animal
Do Now:
1. Pick up a plant and
animal cell worksheet.
2. Color the worksheet
(make each part a
different color)
Let’s look at the
structure of the cell {
How do you think the structure
of the cell relates to a school?
Surrounding
the Cell
Cell Membrane
Provides support and protection
and
Functions as cell
Both plant and animal cells
Think of a school’s doors and
intercom system

Cell Wall
Surrounds cell and gives additional
support and protection.
Plant cells only
Think of this as the brick and
concrete outer walls surrounding the
school.

{Inside the Cell
Nucleus
Contains DNA, which makes you unique
 Directs the activity of the cell for example,

when it
ws and d i v i d e s
gro
Both plant and animal cells
 Think of the principal’s office as the nucleus
and the student files in the office as DNA

Nuclear Membrane
Double layer material surrounding the nucleus
and separating it from the cytoplasm.
 Pores on the outside allow material to pass in
and out.
 Both plants and animal cells
 Think of the secretary outside the principal’s
office that controls who enters the office.

Brain Break:
What is the cell membrane’s
function?
A) Allows materials to enter/exit cell
B) Contains the DNA
C) Cleans up cell waste
Cytoplasm
Jelly-like material that fills the cell
Contains water and food for cell
Holds organelles in place
Both plant and animal cells
Think of the air that fills up the entire
school

Endoplasmic Reticulum
(E.R.)
The “highway” of the cell that moves materials
around to other parts
 Some parts of the E.R. contain ribosomes, which
create proteins
 Both plant and animal cells
 Think of the school hallways where students and
teachers transport ideas to other parts of the
school

If you drive
too fast,
you’ll end up
in the E.R.!
Golgi Apparatus
Packages, stores, and secretes
energy for the cell
Both plant and animal cells
Think of the lunch faculty who bring
cafeteria food into the school, then
pack and store it in the kitchen for
later use

Mitochondria
Break down food (sugars) and release energy to
cell – the “Powerhouse” of the cell – cellular
respiration
 Both plant and animal cells
 Think of lunch time at school – food is taken out
of packages, cooked, and then provided to
students and teachers to power them for the rest
of the day

Brain Break:
Which organelle is the highway
of the cell?
A) Mitochondria
B) Nucleus
C) Endoplasmic Reticulum (E.R.)
Lysosomes
Clean up the cell waste products
(Lysosomes clean just like Lysol!)
 Both plant and animal cells
 Think of the janitors who clean up any
waste in the school at the end of the day

Ribosomes
Builds the proteins needed inside and
outside the cell
 Free inside cytoplasm and attached to E.R.
 Both plant and animal cells
 Think of the construction men who build
the school and make any necessary
repairs to keep it going.

Chloroplast
Makes sugars and starches during
photosynthesis for energy
Food producers in plant cell
Green chlorophyll inside chloroplasts
assist with the process

Vacuoles
Stores water, food and wastes
and other materials.
Brain Break:
Which organelle is the
“powerhouse”?
A) Lysosomes
B) Mitochondria
C) Golgi Apparatus
Nucleolus
Produces ribosomes!
Chromatin
Tiny strands inside the
nucleus that have
instructions for directing
cells.