Cell Organelles

1
Cell Organelles
2
Cell Organelles
3
Endoplasmic Reticulum Structure

• Network of membranous channels
• Rough ER - studded with ribosomes
• Smooth ER - no ribosomes

4
Ribosomes
5
Rough ER Function

• Processes and sorts proteins to be secreted out
  of cell
• Sends proteins in vesicles that pinch off from
  the membrane

6
Smooth ER Structure
No ribosomes attached
7
Golgi Apparatus
8
Smooth ER Function

• Makes lipids and carbos
• Detoxifies poisons
• Stores and releases Ca2 ions
• Removes phosphate group from glucose so can leave
  cell

9
Golgi Apparatus (Bodies) Structure
Flattened stack of membranes (not continuous)
10
Golgi Apparatus Function

• Modifies, sorts, packages, and transports
  proteins from ER
• Forms transport vesicles

Show Campbell Ch 07 Endomembrane System
Lysosome Formation
11
Lysosomes Structure

• Are vesicles filled with digestive enzymes

Show Lysosome Animation
12
Lysosomes Function

• Digest damaged or worn out organelles
• Digest entire cells

5-week old fetus
13
(No Transcript)
14
Lysosomes
15
Lysosomes Function

• Digest pathogens and molecules

16
Peroxisomes Structure
Kidney epithelial cells Green peroxisomes Red
nucleus
17
Peroxisomes Function

• Oxidize fatty acids and amino acids
• Neutralize toxic compounds made when oxidizing
  fatty acids and amino acids

18
Mitochondria Structure
19
Mitochondria Function
20
Nucleus Structure
Nuclear Envelope
Chromatin
Nucleolus
Nucleoplasm
Nuclear Pore
21
Nucleus Chromatin

• DNA exists as strands of chromatin, except during
  cell division

22
Nucleus Function
23
Figure 02.02tao
24
Cytoskeleton Structure and Function
25
Microtubules
26
Microfilaments
27
Microfilaments
28
Microvilli
29
Microvilli Structure and Function
30
Centrosome and Centrioles
31
Centrosomes/Centrioles
32
Centrosome
33
Centrosome
34
Centrioles
35
Cilia Structure
36
Figure 02.02tal
37
Cilia Function
38
Flagella Structure
39
Figure 02.02tam
40
Flagella Function
Normal sperm at bottom and abnormal sperm at top
41
Ribosomes Structure and Function
42
Cell Organelles Video