Cell Organelles Chapter 6. Slide 2 of 28 Nucleus 1.2.3. 4. 5. 6.

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Presentation transcript:

Cell Organelles Chapter 6

Slide 2 of 28 Nucleus

Slide 3 of 28 Ribosome  Found in Both Prokaryotes + Eukaryotes  Site of protein synthesis  Found free or bound onto Rough Endoplasmic Reticulum  Also found in Mitochondria + Chloroplasts  Consists of 65% rRNA (ribosomal RNA) + 35% RNP (Ribonuclear Protein)  2 subunits: Large & Small

Slide 4 of 28 Ribosome (Page 2)  Prokaryote: 70s ribosome = 50s (large) + 30s (small)  Eukaryote: 80s = 60s (large) + 40s (small)

Slide 5 of

Slide 6 of 28 Function of ERs  Rough ER  Membrane factory (Phospholipids and Membrane Proteins)  Proteins to be secreted  Smooth ER  Lipid synthesis  Detoxification of drugs (Liver)  Carbohydrate metabolism + Ca 2+ storage

Slide 7 of 28 Endomembrane System Function of the Golgi body?

Slide 8 of 28 Lysosome

Slide 9 of 28

Slide 10 of 28 Mitochondria

Slide 11 of 28 Mitochondrion  Powerhouse of the cell  Cellular Respiration (Aerobic Respiration)  Circular DNA + Ribosomes (70s) in Matrix  2 membranes  Outer membrane = Plasma or Cell membrane  Inner membrane – membrane proteins are entirely different than outer membrane  Endosymbiosis Theory

Slide 12 of 28

Slide 13 of 28 Chloroplast

Slide 14 of 28 Chloroplast

Slide 15 of 28 Chloroplast  Site of Photosynthesis  Thylakoid membranes = Light-Dependent Rxns (Photo)  Stroma = Light-Independent Rxns (Synthesis)  How many membranes?  Contains ribosomes (70s) + circular DNA

Slide 16 of 28 Cellular Structure  Where do cells get their rigidity?  Plant cells = Cell Wall  Still have cytoskeleton  Animal cells – need the cytoskeleton (3 main types)

Slide 17 of 28

Slide 18 of 28

Slide 19 of 28

Slide 20 of 28 Cytoskeleton  What are the three types of filaments comprising cytoskeleton?  What are the intermediate filaments associated with?  Which filament is found in cilia?  What is the arrangement of filament in cilia?  What is the filament arrangement in centrioles?

Slide 21 of 28

Slide 22 of 28 Extracellular Matrix (ECM)  Only in animal cells  Structural support  Binds animal cells together  Why is it absent in plant cells?

Slide 23 of 28

Slide 24 of 28 Plasmodesmata  Only Intercellular junction in plant cells  Channels between adjacent cells  Similar to which intercellular junction in animal cells?

Slide 25 of

Slide 26 of

Slide 27 of 28 More Questions  1. Name 2 organelles that contain DNA?  2. Name 3 organelles that contain DNA  3. Name 1 of the 2 organelles that have 2 membranes  4. Name both organelles that have 2 membranes  5. Which organelle has 3 membranes?  6. Which 2 organelles have ribosomes?  7. Which organelle is directly connected to the nucleus?

Slide 28 of 28 More Questions (2)  8. Name an organelle that lacks a membrane  9. Name the cellular junction in plants  10. Name 2 of the cellular junctions in animals  11. Which filament comprises the nuclear lamina?  12. Which filament is found in centrioles?  13. Which filament is prominent in muscle cells?  14. Which organelle is responsible for protein synthesis?