Inside the Cell Copyright, 1996 © Dale Carnegie & Associates, Inc. 1Use the videodisc “Tour of the Cell” Chapter 20 Review Cell membranes Teach “Inside the Cell” Copyright, 1996 © Dale Carnegie & Associates, Inc.

Nucleus - Control Center Contains nearly all of the cell’s DNA DNA and protein called chromatin Chromatin coiled in chromosomes The control center Either Prokaryotic-no internal membranes Eukayrotic-nucleus, organelles Switch to “cellBioVideodisc – Side A Show Prokaryotic vs. eukaryotic cells – Frame _______________?

Envelope! Nuclear Membrane Pores Two distinct membranes ----------------- Envelope! Pores Two distinct membranes Selectively permeable

Cytoplasm The area outside the nucleus A “cell” “fluid” Organelles - specialized functions Membranes

Ribosomes RNA and protein 25 nanometers - small Site of protein assembly Pint to the picture of this in the textbook. The Nucleolus (in the nucleus) is the place where ribosomes are assembled

Endoplasmic Reticulum Similar to nuclear membrane - connected to it Smooth Rough with ribosomes Proteins travel through it

Golgi Apparatus Packages and ships proteins to destinations in the cell Look in the textbook and find the part of the Goli that is moving.

Lysosomes sac-like membrane containing hydrolytic enzymes fuse with damaged organelles and break them into basic molecules

Cytoskeleton cell support structures microtubules microfilaments movement proteins attach and move cilia, flagella use microtubules Frame 43811

Vacuoles Animals: store proteins, fats, carbohydrates Plants: store water, dissolved salts support due to turgor pressure

Mitochondria Complex organic molecules changed to energy (ATP) Present in all eukaryotic cells Inner and outer membranes

Chloroplasts sun’s energy captured present in plants Stacked membranes

Activities Cell cut and paste Section Review 3-3 “A Tour of the Animal Cell”

Section Review Xerox 10 l 1 f 11 h 2 e 12 m 3 j 13 b 4 i 14 g 5 c 15 nucleus 16 nuclear envelope 17 little organ 18 tens of thousands 1 f 2 e 3 j 4 i 5 c 6 n 7 d 8 k 9 a

Section Review 3-3 (cont) 23 Eukaryotic cells have a nucleus while prokaryotic cells do not – they have no internal membranes. 24 Plants need chloroplasts to harvest the energy of the sun. 25 Mitochondria are needed to produce energy from chemical fuel. 19 on its surface 20 lysosome 21 cytoskeleton 22 energy

Term Analogy Chloroplast Power plant that uses solar energy Vacuole Holding tank of septic system Mitochondria Similar to money that is earned by working Lysosome junkyard for cars/chopshop ER FedEx or UPS Golgi Apparatus Mail room Protein channels Lincoln Tunnel Cytoskeleton 2 x 4s in a house