Transcript found in eukaryotic cells

6.01 Cell Organelles
+ Active and Passive Transport
Animal cell
Plant cell
•Eukaryotic cell-
A cell that
contains a
nucleus.
Two types of
eukaryotic
cells.
Animal cell
Plant cell
•Prokaryotic•A cell that does not
have a nucleus.
•Cell membrane- the
layer through which
substances pass in
and out of the cell.
Cell membrane
•Cell Wall- The
outermost layer
of plants cells.
Plant cell wall
• Nucleus –
• found in eukaryotic
cells; contains DNA.
The control center for
the cell.
• The job of a nucleus is to be
the control center of the cell.
The nucleus in a human cell
has forty-six chromosomes.
This stores the instruction of
the cell's activity. The
nucleus is like a vault. It
contains the cell's DNA.
• DNA (deoxyribonucleic acid) -
Heredity material
that controls all the
activities of a cell.
•Chromosomesdirects the activities
of a cell and passes
on the traits of a cell
to new cells.
•Cytoplasm•fluid
surrounding a
cell’s
organelles.
•Lysosomesdigests food
particles, wastes &
foreign invaders.
•Vacuoles- Stores
water and other
materials.
•Mitochondriabreaks down
food molecules.
•ChloroplastsMakes food using
the energy of
sunlight. (This
process is called
Photosynthesis)
• Endoplasmic
Reticulum- (ER)
• packages up proteins
for release from the
cell.
•RibosomesMakes proteins.
•Golgi Body
ComplexProcesses and
transports
materials out of
the cell.
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Homeostasis
• Maintaining stable internal
conditions.
Ex: sweating when running so you
don’t overheat
I’m thirsty- I drink something
I’m hungry – I eat something
Passive Transport
• Allows materials to move
through the cell
membrane with out the
use of energy.
• Diffusion• molecules of a substance
move from areas of
higher concentration to
areas of lower
concentration.
Here’s an example.
Let’s test this out
• Let’s perform a few experiments to find out
how it works.
• I have a air freshner that I will spray at the
front of the room. The person at the back
of the room will tell me when he/she
smells the scent.
Osmosis
• The movement of water
from areas of high to low
concentration.
Active Transport
• The movement of materials
from areas of low to high
transportation.
• Requires the use of energy.
•Endocytosis cell takes in
large particles
by engulfing
them.
•Exocytosis cell gets rid of
particles,
opposite of
endocytosis
The End.