Transcript The cell theory states

Cells:
Structure
and
Function
Questions:
1.What are cells?
2.How were cells discovered?
3.Give examples of organisms that are made
up of cells.
4.What are the three main parts of every cell?
5.What organelles are found only in plant
cells?
6.How do unicellular and multi-cellular
organisms compare?
Cells
are the
building
blocks of
all living
things.
Facts on Cell Theory
The cell was first discovered by Robert
Hooke in 1665. He examined very thin slices
of cork and saw billions of tiny pores that
he said looked like the walled
compartments of a honeycomb. Because of
this association Hooke called them cells,
the name they still have.
The cell theory is a widely accepted
explanation of the relationship between
cells and living things.
The cell theory states:
All living things are composed of cells.
Cells are the basic unit of structure and
function in living things.
Cells arise from pre-existing cells.
Parts of a Cell
Nucleus: the control center that determines all the cell’s activities
Chromosomes: carry genetic DNA that make each organism unique
Cell membrane: protective cover that allows diffusion of materials
Cytoplasm: gel substance that provides chemicals the cell needs to
survive
Mitochondria: changes food into energy the cell can use
Vacuoles: store water and nutrients
*Found in plant cells only
Cell Wall: rigid outer covering
Chloroplasts: use light energy to make food
Use the vocabulary cards to label the parts of this animal cell.
Use the vocabulary cards to label the parts of this plant cell
Click on the picture to label these cells on the Harcourt website
Organisms can be unicellular or multi-cellular. Use the prefixes
of these words to help determine their meanings. Discuss with
your shoulder partner what these words mean and be prepared
to share with the class how you determined those meanings.
Click on the picture to learn how cells are organized into whole organisms.
Plant Cells sung to the tune of "The Beverly Hillbillies“
If it's a living thing then it's made of many cells.
Those tiny microscopic things filled with organelles.
These cells have a wall that give the plants their shape
Underneath the wall there's a membrane that's a gate.
Keeping out the chemicals that for the cell are bad.
Holding in the organelles and fluids the cell has.
Cytoplasm is the stuff that holds the organelles
They each have a function that is needed for the cell.
Mitochondria, and chloroplasts and vacuoles.
Take orders from the nucleus whose always in control.
The mitochondria give the cell its energy.
The chloroplasts help make the food the plant will surely need
The vacuoles they store water, waste, and nutrients
Like a storage warehouse where the extra things are sent.
All these organelles work together can't you see?
To make a plant the living thing that it was meant to be.
(Speak next line).
Plants.....They are.....Living things...Photosynthesizing...Giving us the air we need!
Animal Cells sung to the tune of “The Farmer in the Dell”
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.
The nucleus in charge tells the others what to do. A cell has many parts inside. Now you can learn
them too.
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.
The mitochondria gives the cell its energy. A cell has many parts inside. Now sing them all with me.
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.
The vacuoles they store water, waste, and nutrients. A cell has many parts inside. It's making perfect
sense.
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.
The Cell Membrane lets things in. It also lets things out. A cell has many parts inside. For this I have
no doubt
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.
Cytoplasm is the stuff that holds the parts in place. A cell has many parts inside. It's not an empty
space.
The parts of a cell. The parts of a cell. A cell has many parts inside. We call them organelles.