Transcript 1.2 Prokaryotic Eukaryotic

Prokaryotic and Eukaryotic Cells

Catalyst
 Are
green, growing leaves
alive? Why/why not?
 Are computers alive?
Why/why not?
Write in complete sentences!
Don’t talk during the Catalyst!
Objectives

By the end of today, SWBAT…
Compare
prokaryotic and eukaryotic
cells
Describe the role of DNA, the cell
membrane, cytoplasm, and the
nucleus in the cell
Why do we care about cells?
You are alive
 Parts of you are alive!
 Parts of those parts are alive!
 Where does it end?
 The cell!

 The
cell is the smallest form of life
 ALL living organisms are made of cells
Human Red Blood Cells
White Blood Cell Attacking Bacteria
Human Sperm Cell
Human Egg Cell
What makes them different?

Key Point #1: The function of a cell
(what it does) is determined by its
structure (what it is made of)
DNA (deoxyribonucleic acid) is the
genetic code that instructs the cell
how to run (it’s what makes you
“you”)
Organelle: Part of a cell
Cell membrane
The cell membrane
is a thin, flexible
barrier around the
cell
 It controls what goes
in and out of the cell
 All cells have this

Cytoplasm
The cytoplasm is
everything inside of
the cell membrane
 The cytoplasm
contains all the cell
organelles
 All cells have this

Nucleus

Nucleus holds DNA
and controls the cell’s
activities
 The
cell’s own minibrain

The nucleus has its
own special
membrane
Eukaryotic cells

Eukaryotic cells have a
nucleus
 All
multi-celled
organisms are
eukaryotes
 So all PLANTS and
ANIMALS are
eukaryotes
Prokaryotic cells

DNA is
floating in the
cytoplasm
Always
single-celled
organisms
Quick Recap
Cell
Membrane
Cytoplasm
Nucleus
DNA
Eukaryotic?
Yes
Prokaryotic?
Yes
Yes
Yes
Yes, inside of
nucleus
Yes
No
Yes, floating
in cytoplasm
Independent Study Time
Take a few minutes to study your note
cards.
 If you realize that you don’t understand
what you wrote down…

Take
notes in your own words!
Ask your group-members
Raise your hand and ask me for help
“Throw your hands in the aaaaair” (GP)

First round
Discuss

in groups
Second round
Try
on your own
Where all cell
organelles are
found
Controls everything
that happens in the
cell.
Prokaryote or Eukaryote?
Found on the edge of
the cell.
Prokaryote or Eukaryote?
Everything inside of
the cell membrane.
Missing in
prokaryotes.
All plants and
animals are this
type of cell
ALL CELLS have these
TWO things. (Hold
up both cards.)
Decides what gets to
go into the cell, and
what has to leave.
In eukaryotes, DNA is
found here.
Prokaryote or Eukaryote?
Which of the following is true?
1.
2.
3.
4.
What enters/leaves the cell is controlled by “A”
The presence of “B” makes this a eukaryotic cell
The presence of “B” makes this a prokaryotic cell
“C” is found in ALL cells
B
C
A
Quiz your partner
Choose a partner at your table, and (using
the flash cards) quiz him/her
 Be difficult!

 Ask
anything we have learned today
 Don’t take an answer unless it is perfect
 What we have learned today is fundamental to
everything else we will learn about the cell… so
get it right!!!
Exit Questions
1. What is the big difference between
eukaryotic and prokaryotic cells?
2. Describe what TWO out of these
three things do in the cell: cell
membrane, cytoplasm, nucleus
Write in complete sentences!
Don’t talk during the Exit Question!