CELL BIOLOGYMarc Imhotep Cray , M.D. CELLULAR ORGANIZATION and ORGANELLES :CELL BIOLOGYMarc Imhotep Cray , M.D. CELLULAR ORGANIZATION and ORGANELLES


Diagram representing the cell membrane :IVMS 2009 Diagram representing the cell membrane 2


Cell Membranes from Opposing Neurons (TEM x436,740). :IVMS 2009 Cell Membranes from Opposing Neurons (TEM x436,740). 3


Structure of an animal cell :IVMS 2009 Structure of an animal cell 4


Liver Cell (TEM x9,400) :IVMS 2009 Liver Cell (TEM x9,400) 5


Structure of the nucleus. Note the chromatin, uncoiled DNA that occupies the space within the nuclear envelope. :IVMS 2009 Structure of the nucleus. Note the chromatin, uncoiled DNA that occupies the space within the nuclear envelope. 6


Liver cell nucleus and nucleolus (TEM x20,740). Cytoplasm, mitochondria, endoplasmic reticulum, and ribosomes also shown. :IVMS 2009 Liver cell nucleus and nucleolus (TEM x20,740). Cytoplasm, mitochondria, endoplasmic reticulum, and ribosomes also shown. 7


Structure of the nuclear envelope and nuclear pores :IVMS 2009 Structure of the nuclear envelope and nuclear pores 8


Nucleus with Nuclear Pores (TEM x73,200). The cytoplasm also contains numerous ribosomes :IVMS 2009 Nucleus with Nuclear Pores (TEM x73,200). The cytoplasm also contains numerous ribosomes 9


Actin and tubulin components of the cytoskeleton :IVMS 2009 Actin and tubulin components of the cytoskeleton 10


Structure of the ribosome :IVMS 2009 Structure of the ribosome 11


Ribosomes and Polyribosomes - liver cell (TEM x173,400) :IVMS 2009 Ribosomes and Polyribosomes - liver cell (TEM x173,400) 12


The endoplasmic reticulum. Rough endoplasmic reticulum is on the left, smooth endoplasmic reticulum is on the right. :IVMS 2009 The endoplasmic reticulum. Rough endoplasmic reticulum is on the left, smooth endoplasmic reticulum is on the right. 13


Rough Endoplasmic Reticulum with Ribosomes (TEM x61,560). :IVMS 2009 Rough Endoplasmic Reticulum with Ribosomes (TEM x61,560). 14


Structure of the Golgi apparatus and its functioning in vesicle-mediated transport. :IVMS 2009 Structure of the Golgi apparatus and its functioning in vesicle-mediated transport. 15


Golgi Apparatus in a plant parenchyma cell from Sauromatum guttatum (TEM x145,700). Note the numerous vesicles near the Golgi. :IVMS 2009 Golgi Apparatus in a plant parenchyma cell from Sauromatum guttatum (TEM x145,700). Note the numerous vesicles near the Golgi. 16


Role of the Golgi in forming lysosomes :IVMS 2009 Role of the Golgi in forming lysosomes 17


Structure of a mitochondrion :IVMS 2009 Structure of a mitochondrion 18


Muscle Cell Mitochondrion (TEM x190,920). :IVMS 2009 Muscle Cell Mitochondrion (TEM x190,920). 19


The cytoskeleton :IVMS 2009 The cytoskeleton 20


Cilia from an epithelial cell in cross section (TEM x199,500). Note the 9 + 2 arrangement of cilia. :IVMS 2009 Cilia from an epithelial cell in cross section (TEM x199,500). Note the 9 + 2 arrangement of cilia. 21


Movement of cilia and flagella :IVMS 2009 Movement of cilia and flagella 22