Prokaryotic and Eukaryotic Cells Catalyst (REMEMBER: MR. GORE!) Are green, growing leaves alive? Why/why not? Are computers alive? Why/why not? Which phone is older? Explain how you know. DO NOW.
To be alive, you must have ALL: M etabolism R eproduction G rowth O rganization R esponse E volution
Objectives By the end of today, I can… 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 mini- brain The nucleus has its own special membrane
So we have some organelles… To help you remember the function of each, create an analogy in your notes. Compare each cell organelle to a part of IMCS. The (cell organelle) is like a (make a comparison) because it ______________________________.
What makes them different? Key Point #2: Prokaryotic and eukaryotic cells have different structures
Eukaryotic cells Eukaryotic cells have a nucleus Membrane-bound organelles All multi-celled organisms are eukaryotes So all PLANTS and ANIMALS are eukaryotes Can be single-celled
Prokaryotic cells DNA is floating in the cytoplasm Always single-celled organisms
Double Bubble (In your notes) Prokaryotic Cell Eukaryotic Cell
Quick Recap Eukaryotic?Prokaryotic? Cell Membrane Yes CytoplasmYes NucleusYesNo DNAYes, inside of nucleus Yes, floating in cytoplasm
Study Time Take 5 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
ROUND ONE (Groups)
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.
This cell is single- celled, its traits are controlled by DNA, and has a nucleus
ROUND TWO (Individual)
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?
A Bloopie is a single-celled organism, has a flagellum, and membrane-bound organelles. What type of cell does it have?
Which of the following is true? 1. What enters/leaves the cell is controlled by “A” 2. The presence of “B” makes this a eukaryotic cell 3. The presence of “B” makes this a prokaryotic cell 4. “C” is found in ALL cells B C A
Quiz your partner With the person next to you, use the flash cards to 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. Describe the differences between eukaryotic and prokaryotic cells. (Include at least two.) 2. Describe what TWO out of these three things do in the cell: cell membrane, cytoplasm, nucleus Complete sentences! Don’t talk!