Transcript Plant cells - Cloudfront.net

PLANT CELLS
• Plant cells have almost the same organelles
as the other Eukaryotic cells…
• But they have a few extra things added!
Use the drawing to help you recognize what we
are talking about.
Cell Wall
-Plants cells are covered by a rigid, stiff
cell wall that is outer part of the cell.
- The cell wall surrounds the cell membrane of
the plant cell
Cell membrane (red)
Cell Wall (green)
This stiffness allows the
plant to grow up towards
the sun and not fall over.
Cell walls are made up of long chains of
cellulose.
There are two types of cell walls:
- Primary cell wall expands and develop as the
plant is growing
- Secondary cell wall outside the primary cell
wall and the cell membrane.
Cell
membrane
Secondary
Cell Wall
Primary
Cell
Wall
Color the Cell Walls (gray) and the Cell Membrane
(pink) in your labeling.
Cell Wall
Cell Membrane
VACUOLES
-We said a vacuole is a fluid filled organelles
that store water, wastes, and sometimes
enzymes.
- There usually is 1 large vacuole in plant
cells.
Plants have larger vacuoles because they may
not always get water…so they have to store it
and slowly use it.
- The plants absorb as much water as they can,
pushing all the rest of the organelles to the
edge of the cell wall.
For now, just color the Vacuole (Blue) for
water
Vacuole
PLASTIDS
-A double membrane organelle (green in color) that
absorbs sunlight for photosynthesis
-It is the site of photosynthesis in plant cells
-The most familiar one is called a CHLOROPLAST
Chloroplasts contain round poker-like green
chips called THYLAKOIDS
-The actual conversion of sunlight to chemical
energy occurs in the Thylakoids
They are green colored because they are filled
with Chlorophyll
Chloroplast
Thylakoids
So what are the differences between
Plant & Animal Cells?
ANIMAL
Cell Membrane
Nucleus
Mitochondria
ER (both)
Ribosomes
Golgi Body
Vesicles
Lysosome
Vacuole
Centrioles
PLANT
Cell Membrane
Nucleus
Mitochondria
ER (both)
Ribosomes
Golgi Body
Vesicles
Lysosome
Vacuole (large)
Cell Wall
Plastids (Chloroplast)
Which Organelles are surrounded by double
membranes?
Nucleus, Mitochondria, Chloroplasts
Which Organelles are in the Endomembrane
system?
Ribosomes, ER (both), Golgi body, Vesicle,
Lysosome (sometimes)
VOCABULARY!
Primary Cell Wall
Secondary Cell Wall
Plastids
Chloroplasts
Thylakoids