Download Introduction to Cells

INTRODUCTION TO CELLS
I. CELL DIVERSITY
A.Shape
1.Reflects
function of the
cell
(CELL DIVERSITY continued)
B. Size
1.Giraffe – nerve cell is 2
meters long
2.Human egg cell – about size
of a period at end of
sentence
3.Most are microscopic
BASIC PARTS OF CELL
 Plasma Membrane – outer
boundary that covers cell’s surface
BASIC PARTS OF CELL
 Cytoplasm – all of the area and
parts inside the plasma
membrane but not part of the
nucleus
 Nucleus – membrane bound
structure that contains DNA
TWO BASIC
TYPE OF
CELLS
PROKARYOTES & EUKARYOTES
 DNA as genetic material
 RNA for protein
synthesis
 Glycolysis – breaking
down glucose for energy
 Ribosomes
PROKARYOTES Vs. EUKARYOTES
 No nuclear
membrane
 Domains
Bacteria &
Archaea
 Unicellular
 Nuclear
membrane
 Domain
Eukarya
 Unicellular or
multicellular
PLANT Vs. ANIMAL
 Cell wall – rigid
 No cell wall
layer outside
membrane

No
Central
 Central Vacuole –
Vacuole
reservoir that
stores large
amount of water
 Chloroplasts –
 No Chloroplasts
photosynthesis
takes place