Transcript Cells

CELLS
Robert Hooke
Robert Hooke1st person to
view a cell
under a
microscope,
given credit for
naming cells.
CELL THEORY
Cell Theory- made up of three parts
1. Cells are basic building
block of all living things
2. All life activities take place
in cells
3. New cells are produced by
existing cells
Cell Organelles
Cell Organelles
Organelle- tiny
structures that
carry out cell
activities
Cell Membrane
Cell Membrane- surrounds
the cell and controls what
goes in and out of the cell
Semi-permeable
acts much like a filter or
screen - some things pass,
others cannot
Nuclear Membrane
Nuclear Membrane- Surrounds
the nucleus and controls
materials moving in and out of
the nucleus
Nucleus
Nucleus- control
center of the
cell, directs all
the cell’s
activities
Contains DNA
Usually the easiest organelle to see
under a microscope
Usually one per cell
Cytoplasm
CytoplasmJelly-like
substance that
fills the cell
and contains
the other parts
of the cell
Chromosomes
ChromosomeHolds the
instructions for
all traits of a
cell
DNA
DNA- chemical
found in the
chromosomes,
that directs life
activities,
“Blueprint of
Life”
Mitochondria
MitochondriaStores and
releases the
energy
“Powerhouse of the cell”
Chloroplast
ChloroplastContains
chlorophyll that
absorbs energy
from the sun to
help the plant
make food
Cell Wall
Cell Wall- Stiff
outer layer that
protects and
gives a plant cell
its’ shape
Found in plant cells
Vacuoles
VacuolesStorage
container for
water, food,
wastes
Larger vacuoles usually in plant cells
Many smaller vacuoles in animal cells
Quick Review
Which organelle is the control center of the
cell?
Which organelle holds the cell together?
Which organelles are not found in animal cells?
Which organelle helps plant cells make food?
Enjoy these photos and diagrams of the
cell organelles!
…the Cell Wall
Mitochondria!
The nucleus with other structures…