DO NOW: Cell Factory Analogy

Cells

All cells have… 1. Cell membrane 2. Hereditary material 3. Cytoplasm 4. Ribosomes ************************************

Cytology Study of cells

smallest unit that is capable of performing life functions. Cell smallest unit that is capable of performing life functions. The shape of a cell tells you about the ____________ of the cell. function

Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell

Prokaryotic Eukaryotic Two Types of Cells Prokaryotic Eukaryotic Use page 39 in your text books to sketch a drawing and label each!

Prokaryotic No membrane-bound organelles No defined nucleus (nucleoid) Single-celled http://library.thinkquest.org/C004535/prokaryotic_cells.html

Eukaryotic Membrane-bound organelles Cell wall- plants ONLY! Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

“Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

“Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif

Cell Wall found in plant cells & bacteria Supports & protects cells Made of a starch/carbohydrate called cellulose

Cell Membrane Maintains homeostasis Selectively permeable Made of proteins, carbs, and lipids

Fluid Mosaic Model

Cytoplasm Gel-like mixture Surrounded by cell membrane Holds the organelles Contains the cytoskeleton Which gives the cell shape Cytoplasm

Nucleus Directs ALL cell activities Contains hereditary material Separated from cytoplasm by nuclear membrane Nucleolus makes RNA Nucleus

Chloroplast Photosynthesis! Contains green chlorophyll Mostly found in plant cells

Mitochondria Cristae Energy (ATP) Does cellular respiration Internal membrane called cristae Breaks down proteins, fats, and carbohydrates to be used as energy Cristae

Ribosomes Each cell contains thousands Make proteins Found floating in the cytoplasm or attached to the rough ER Made by the nucleolus

Endoplasmic Reticulum Moves materials around in cell Smooth: no ribosomes- makes lipids Rough: has ribosomes- makes proteins Ribsomes help make proteins

Golgi Bodies Material 'packaging plant' Packages substances in vesicles

Vacuole Used for storage, digestion, and waste removal Help plants maintain shape Large vacuole in plant cells Small vacuole in animal cells

Lysosome Digests proteins, fats, and carbohydrates Why is it important the lysosome has a membrane? Cell breaks down if lysosome explodes

Centrioles Help with cell division Only found in animal cells Located near nucleus

Organization Work with a partner to fill in the last couple of blanks on the back of your notes!!

“Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

“Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif