Presentation on theme: "Prokaryotic and Eukaryotic Cells Catalyst Are green, growing leaves alive? Why/why not? Are computers alive? Why/why not? Write in complete sentences!"— Presentation transcript:
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
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
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 Eukaryotic?Prokaryotic? Cell Membrane Yes CytoplasmYes NucleusYesNo DNAYes, inside of nucleus 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
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 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!