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Transcript
The Cell:
What are its parts?
NUCLEUS
• Controls all the
chemical reactions
that happen in the
cell.
• Contains the cell’s
DNA.
E.R.
• Carries the proteins
from the ribosomes.
RIBOSOMES
• Where proteins are
made.
• Necessary for the
DNA to work.
• ALL cells have
these.
GOLGI
• “Packages” the
proteins.
• Often connected to
the E.R.
MITOCHONDRIA
• Where sugar is
turned into usable
energy.
LYSOSOMES
• Bags of enzymes.
• Allows the cell to self destruct.
VACUOLE
• Holds things for the
cell, often WATER.
• Can also hold food.
CYTOPLASM
• It is the water inside
the cell.
CELL MEMBRANE
• Controls what goes in and out of the cell.
CELL WALL
• Gives the cell shape
and strength.
• Plants have these,
animals do not.
• Made of cellulose.
CHLOROPLAST
• Where
photosynthesis
happens.
• Plants have these
and animals do not.
• These are green.
PART II
What are the
differences between
animal cells and
plant cells?
#1
Animal cells are ROUND,
plant cells are RECTANGULAR.
ANIMAL
PLANT
#2
Plant cells have cell walls.
Animal cells don’t have cell walls.
The cell wall is very obvious around this
onion cell.
#3
Plant cells have CHLOROPLASTS.
Animal cells don’t.
We can’t do photosynthesis because
we don’t have chloroplasts.
#4
Plant cells usually have
a large water vacuole.
Animal cells don’t.
You can see the water vacuole takes up
most of the plant cell.
Part III
We know about plant
and animal cells….
What about OTHER
kinds of cells?
PROTISTS
• A PROTIST is a very
small organism.
• Its whole body is just
one cell.
• This is an AMOEBA.
PROTISTS
Compare the AMOEBA
photograph with the
drawing.
PROTISTS
This is a
PARAMECIUM.
PROTISTS
This is a EUGLENA.
PROTISTS
We might see some
protists when we look
at pond water under a
microscope.