Presentation on theme: "Cells Introduction Cell Theory, Prokaryotic vs Eukaryotic."— Presentation transcript:
Cells Introduction Cell Theory, Prokaryotic vs Eukaryotic
Journal Entry (Name the organelle that best fits the description.) 0 1. Cell Control Center that contains DNA Allows materials to flow in and out of cell Supports and Protects the cell Makes usable energy for the cell stores food, water, and waste captures sunlight, to produce food Makes proteins clear jelly inside a cell makes ribosomes network of rods that maintains the cells shape
Prokaryotic Cell Labeling Underneath the diagram. Explain the difference between Prokaryotic and Eukaryotic. Why would a prokaryotic cell need something like a capsule?
The Cell Cell Theory and Scientist
Scientist : Robert Hooke 0 Discovered and name cells 0 Leewenhoek: Discovered single cells through pond water. (single- lens microscope) s: M. Schleiden 0 All Plants-made of cells 0 T. Schwann 0 All animals-made of cells 0 R. Virchow 0 Known for the Cell Theory
Cell Theory 0 Definition: The Cell Theory is one of the basic principles of biology. Credit for the formulation of this theory is given to german scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow. 0 The Cell Theory states: 0 All living organisms are composed of cells. They may be unicellular or multicellular. 0 The cell is the basic unit of life. 0 Cells, Tissue, Organs, Organ Systems, Organism 0 Cells arise from pre-existing cells.
New Ideas 0 Energy flow occurs within cells. 0 Heredity information (DNA) is passed on from cell to cell. 0 All cells have the same basic chemical composition.
Draw a Venn Diagram on the next page. Eukaryotic vs Prokaryotic
Two Types of Cells 0 All living organisms can be sorted into one of two groups depending on the fundamental structure of their cells. 0 These two groups are the prokaryotes and the eukaryotes. 0 Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. 0 Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus (that holds genetic material) as well as membrane-bound organelles.
Anatomy of a Prokaryotic Cell 0 A typical prokaryotic cell might contain the following parts: 0 cell wall 0 plasma membrane 0 cytoplasm 0 flagella and pili 0 nucleoid 0 plasmid 0 Ribosomes
Anatomy of a Eukaryotic Cell A typical eukaryotic cell might contain the following parts: 0 plasma membrane 0 nucleolus 0 nucleus 0 chromosomes 0 rhibosome 0 vesicle 0 endoplasmic reticulum 0 Golgi apparatus 0 cytoskeleton 0 cytoplasm 0 lysosome 0 centrioles 0 mitochondria
The different cells 0 eature=related eature=related
All Cells HAVE! 0 1. DNA: the genetic material 0 2. PLASMA MEMBRANE: A phospholipid bilayer with proteins that separates the cell from the surrounding environment CYTOPLASM: The rest of the material of the cell RIBOSOMES: the organelles on which protein synthesis takes place.
Cell process – Synthesis of new molecules 0 Synthesis means “making” 0 What organelles are involved in making new molecules? 0 Nucleus (contains instructions to make proteins) 0 Ribosomes (make proteins) 0 Rough endoplasmic reticulum (synthesizes proteins) 0 Smooth endoplasmis reticulum (synthesizes lipids) 0 Golgi body (modifies molecules)
Cell Processes -- Homeostasis 0 Homeostasis is the maintenance of a stable internal environment. 0 Think of the organelles – which work together to perform homeostasis? 0 Cell membrane (lets out waste, transports in nutrients) 0 Cell wall (keeps cell shape) 0 Lysosome (digests waste) 0 Nucleus, ER, ribosomes, Golgi body (create new molecules needed to maintain homeostasis)
Tour of the Cell 0 1. You will be watching Paul Andersons Pod Cast on the cell. 0 This will review cell types, functions, and the major organelles. 0 This will take about 15 Minutes. 0 Homework: Cell Coloring Packet..Eukaryotic (animal and Plant), and Prokaryotic,