I-Cells- basic units of life
all organisms composed of cells
all from pre-existing cells
smallest unit having properties of life
II-Cell properties
cell membrane
DNA
cytoplasm
III-Cell types
prokaryotes- bacteria
eukaryotes- plants, animals, molds
viruses are not cells
IV-Cell Membranes
lipid bilayer
fluid mosaic model
permeability characteristics
proteins in membrane give specific properties
V-Diffusion- movement of molecules from high to low concentration
osmosis (net movement of water molecules through
membrane)
hypotonic
hypertonic
isotonic
VI-Carrier-mediated transport
passive transport
active transport
VII-Bulk transfer
endocytosis
exocytosis
phagocytosis
VIII-Cytoskeleton
microtubules
intermediate filaments
microfilaments
Cilia and Flagella
IX-Nucleus
chromosomes
nucleolus
nuclear envelope
X-Ribosomes
protein synthesis
XI-Cytomembrane System
endoplasmic reticulum
Golgi bodies
vesicles
peroxisomes
lysosomes
XII-Mitochondria
energy production (ADP converted to ATP)
Oxygen utilization
inner and outer membranes
XIII-Enzymes
metabolic pathways
protein catalysts
“-ase”
temperature and pH dependent
XIV-Cell energy
ATP as a "rechargeable" energy storage
anabolism
catabolism
release of potential energy
ATP production
XV-Anaerobic glycolysis
in cytoplasm
pyruvic acid (pyruvate)
lactic acid
NADH2
XVI-Aerobic respiration
in mitochondria
Krebs cycle
electron transport
block by cyanide
XVII-Interconversion of cell biomolecules