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Cells
6th Grade Science
Cells
The cell is one of the most basic units of life.
There are millions of different types of cells.
There are cells that are organisms themselves,
such as microscopic amoeba and bacteria
cells.
And there are cells that only function when
part of a larger organism, such as the cells
that make up your body.
A plant cell from the leaf of a poplar tree
A Single Celled Organism
Called a Paramecium
Cells
A human red blood cell
The cell is the smallest unit of life in our
bodies.
In the body, there are brain cells, skin cells,
liver cells, stomach cells, and the list goes
on.
All of these cells have unique functions
and features.
Some have recognizable similarities.
Animal Cell
Plant Cell
Cell Organelles
Organelles are found in both plant and
animal cells.
Organelles are the objects located inside the
cell that carry out the activities in the cell
and keep it alive.
Cell Wall
The cell wall is found surrounding plant
cells only
This surrounds the cell membrane of a
plant cell and gives the cell protection and
support.
The cell wall is a rigid
structure outside the
cell membrane
Chloroplast
Chloroplasts are found in plant cells only.
These organelles contain chlorophyll which
is used in the “food making process”, or
photosynthesis, and give the plant a green
color when exposed to light.
A plant's chloroplasts convert
light energy into chemical energy
Cell Membrane
The cell membrane is found in both plant
and animal cells.
The cell membrane is the part of the cell
that surrounds and protects it.
It regulates what can enter and leave the
cell.
The cell membrane allows
only certain materials to move
in and out of the cell
Cytoplasm
Cytoplasm is found in both plant and
animal cells.
This is a jelly like substance inside the cell
in which the organelles “float”.
This is the cells environment.
Cytoplasm is the gel-like
material inside the cell
(but unlike gelatin it does flow)
Nucleus
A nucleus is found in both plant and
animal cells.
The nucleus controls growth and
reproduction.
It uses DNA to direct cell activities.
The Boss
Mitochondria
Mitochondria are found in both plant and
animal cells.
They are the “powerhouse” of the cell.
They produce energy for the cell.
The mitochondria are
where energy is released
Golgi Bodies
Golgi bodies are found in both plant and
animal cells.
They package materials and store them or
move them around and out of the cell.
Golgi Bodies package
and move proteins
Vacuole
Vacuoles are found in both plant and
animal cells.
Vacuoles are an expanding and contracting
organelle that stores water, nutrients, and
wastes.
Like your suitcase, a vacuole
is a temporary storage space
for the cell.
Endoplasmic Reticulum
Known as E.R., they are found in both plant
and animal cells.
These are passageways from the nucleus
that transport proteins through the cell.
Rough E.R. has ribosomes attached.
Smooth E.R. does not have ribosomes
attached.
The ER is like a system
of conveyors moving
materials from one place
to another
Ribosomes
Ribosomes are found in both plant and
animal cells.
They make proteins for the cell.
Lysosomes
Lysosomes are found in animal cells.
They recycle worn out products.
A Lysosome acts as a
wrecking ball that breaks
apart wastes or worn out cell parts.
Cell Quiz
Click on the picture for the quiz.