The CellThe Cell

Rubie Maranan-Causaren

Prokaryotic cellCELL TYPES

Prokaryotic cell

Eukaryotic cell (animal)CELL TYPES

Cell Structure: 3 basic divisions

Cell Membrane: Fluid Mosaic Model

Phospholipid

Membrane componentsMembrane components

Membrane LIPIDSMembrane LIPIDS• 1. phospholipids

2 l li id• 2. glycolipids• 3. cholesterol

Membrane PROTEINS• 1. integral• 2. peripheral2. peripheral

Phospholipid bilayerPhospholipid bilayer

Integral Proteins

ORGANELLESORGANELLES

NuclearNuclear Compartment

NuclearNuclear Compartment

Mitochondrion

RIBOSOMES

ENDOPLASMIC RETICULUM

GOLGI COMPLEX

Relationship of ER and GolgiTransport vesicle

cisternaeRER

ribosomes

cisternae

llysosome

Secretory vesicleyExocytosis of

contents

LysosomesLysosomes• Intracellular digestionIntracellular digestion• Autophagy• Autolysis during apoptosisAutolysis during apoptosis• Extracellular digestion

lysosome

peroxisome

Peroxisomes• H2O2 metabolism

Organic cmpds.

H O

oxidase

H2O2

catalase

degraded

catalase

Peroxisomes

•Detoxification of harmful compounds• Methanol• ethanolethanol• Phenol

F ld h dcatalase

• Formaldehyde• nitrites

CYTOSKELETON

CILIA & FLAGELLA

CENTRIOLES

CENTRIOLES

InclusionsInclusions

• VacuolesVacuoles• Vesicles

F t d l t• Fat droplets• Pigments• Crystals• GranulesGranules

Salamat!Salamat!