The Parts of the Cell

The Nucleus --nuclear envelope -- chromatin --nucleolus

I am a reticulated python I am a reticulated python. Ask me what I have to do with the endoplasmic reticulum. The word “reticulum” means net.

Endoplasmic Reticulum - Transport Figure 4.10

Golgi Apparatus - delivery system Cis Face | Trans Face Cisternae (folds) Vesicles - package to be delivered

Ribosomes - Sites of Protein Synthesis large subunit small subunit Each ribosome has a large and small subunit Messenger RNA is threaded through the ribosomes Transfer RNA builds a protein based on the code of the mRNA

Lysosomes - Intracellular Digestion Centers  TAY-SACHS disease – What do lysosomes have to do with this deadly disease?

Other Organelles -- Peroxisomes – result in hydrogen peroxide, broken down by catalase -- Vacuole -- mainly storage or specific functions (contractile vacuole) -- Plant cells have a CENTRAL VACUOLE - used for storage and help to maintain hydrostatic pressure

Energy Related Organelles Mitochondria - The Cell's Chemical Furnaces, produces ATP Chloroplasts - Where Photosynthesis Takes Place What do these organelles have in common?

What happens if your mitochondria don’t work? Mitochondrial Disease Video Why is mitochondrial disease so devastating to children? Consider the mitochondria have their own DNA separate from the parental DNA. How could you cure this disease?

Cytoskeleton How do cells maintain their shape? How do they move? Microfilaments (actin filaments) Microtubules - form the spindle during cell division Centrioles – used during cell division to move and separate chromosomes, only found in animal cell How do they move? - pseudopod - cilia - flagella

The Big Picture

Mini Quiz 1. What part of the cell produces vesicles for export? 2.  What part of the cell makes proteins? 3.  What part of the cell produces ATP? 4.  What part of the cell transports materials throughout the cytoplasm? 5.  What part of the cell has a cis and a trans face?  

a. ________________ b. ________________ c. _________________ d.  _________________ e.  _________________ f.  __________________ Pg 81 f.

Can you describe this process in 10 words or less?

Figure 4.7b Figure 4.7b

Show, Don't Tell Each person will get  a cell concept .   For your concept, design a picture that goes with it and a GESTURE for the idea.   Be prepared to share your pictures and gestures with the class.   Your classmates will use your picture and your gesture to guess what your concept was.  It’s like playing a twisted form of charades! You should be able to draw your picture on the fly, on the board, but have a plan in place before you go up there.

Terms / Concepts for Show, Don't Tell cell_theory mitochondria chloroplast prokaryote protein_synthesis eukaryote nucleus lysosome ribosome endoplasmic_reticulum cytoskeleton golgi_apparatus enzyme messenger_RNA chromatin cell_membrane cilia flagella centriole photosynthesis pseudopodia vacuole