Inside Cells!

What do you see when

you look at yourself in the mirror?

Skin, hair, eyes, teeth, muscles?

Let’s get a closer look….

Under a microscope, (on low power), your skin looks like this:

But upon even closer look…

And closer still..

…and that’s just your skin!

ALL of you is made up of all different kinds of cells.

muscle cellsheart cells

brain cells

Under a microscope, you can see these cells.

Everything that is alive is made of cells.

THE CELL THEORY1.All living things are made of

cells.2. Cells are the basic unit in all

living things.3. Cells can only be produced

by other cells.

Living things made out of just one cell are called

SINGLE-CELLED ORGANISMS

Living things made of more than one cell are called

MULTICELLULAR ORGANISMS

So what the heck is a cell?

If you remember…

Atoms and molecules make up all matter.

Cells are MUCH larger,

and they make up all

of life.

To understand how living things work, you

have to know about cells.

Cells allow us to breathe, grow, get

energy from our food, and even see!

Cells have many parts that help

carry out life’s

functions.

There are two main types of cells that we

will talk about in class.

Let’s start with the animal cell…

Cell Membrane

The outer covering of an animal

cell.

Cell Membrane

•Gives support to the cell. It holds everything in!

2. Allows food to come in and waste to go out through

openings called PORES

Nucleus

The large round(ish)

mass in the cell.

Has a membrane

around outside.

Nucleus• The cell’s

control center.

• Directs all of the cell’s activities.

• Holds the DNA for cell

reproduction

DNA is what causes you to have the color hair, eyes, and height that you have! (and a lot of other things

too)

Cytoplasm

The “empty” space inside

the cell.

Made of a thick, jello-

like substance.

All of the ORGANELLES (tiny cell structures) float around

in the cytoplasm.

Mitochondria

The small organelles

with an inner folded

membrane.

Mitochondria

The “Powerhouses” of the cell.

•They digest sugar

molecules and provide energy

for the cell. •Then they give off carbon

dioxide as waste.

Mitochondria

Ribosomes

Small, grain-like bodies

floating in the cytoplasm.

Ribosomes produce proteins…they are like little protein factories

Endoplasmic Reticulum

A maze of passageways

in the cell.

Endoplasmic Reticulum

Endoplasmic Reticulum

•Carries proteins and

chemicals around the

cell.

Golgi Bodies

A structure of flattened sacs

and tubes.

•Receives proteins from the ER and SORTS and

DISTRIBUTES them to all parts of the cell

Golgi Bodies

Vacuoles

•Storage organelles.

•Both nutrients

and waste can be

stored here.?

Lysosomes

•The cell’s digesters.

They digest old cell parts and recycle the usable

materials.

Now for the plant cell…

They have everything mentioned and 2

more…

Chloroplasts

Able to convert

sunlight into food (sugar).

Cell Wall

Rigid support surrounding

the cell membrane to keep the cell stiff and firm.