All cells are covered by a cell membrane.

JOBS of the CELL MEMBRANE

to keep the cytoplasm inside

to allow nutrients in and waste products out

to interact with things outside the cell

ONLY plants and algae have cell walls

JOB of the CELL WALL

to provide strength and support to the cell membrance

A prokaryotic cell does NOT have a nucleus.

Prokaryiotic cells are BACTERIA.

WHAT IS THE NUCLEUS OF A CELL?

 The nucleus of a cell is the CONTROL CENTER of the cell.

The nucleus stores the DNA that has information on how to make all of the cell's proteins.

The nucleolus is a dark spot inside the nucleus.  It looks like a small nucleus inside the big nucleus.  It stores the materials that will be used later to make ribosomes in the cytoplasm.

What do we call the PROTEIN FACTORIES

OF A CELL?

RIBOSOMES are the organelles that make proteins

PROTEINS are made up of amino acids

the ER or endoplasmic reticulum

is the cell's delivery system

Jobs of the ER

makes lipids and other materials for use inside and outside the cell

breaks down drugs and certain other chemicals that could damage the cell

ER is the internal delivery system of the cell

it has tubular connections, sort of like cars moving through tunnels

the MITOCHONDRIA

THE MIGHTY MITOCHONDRIA

create the energy

mitochondria make ATP and ATP "burns" the food molecules to release energy

mitochondria are bean-shaped organelles