Cell Theory

• All organisms are made of one or more cells.

• The cell is the basic unit of all living things.

• All cells come from existing cells.

Cell membrane- protective barrier that encloses a cell.

Cytoplasm- fluid inside of cell

Cell membrane & Cytoplasm

Nucleus- Contains the cell’s DNA.

Nucleolus- dark area inside the nucleus that begins to make ribosomes

Nucleus

Endoplasmic Reticulum (ER)- system of folded membranes in which proteins, lipid and other materials are transported to other parts of the cell.

Rough Endoplasmic Reticulum- Close to nucleus has ribosomes on it

Smooth Endoplasmic Reticulum- lacks ribosomes

Endoplasmic Reticulum

Ribosomes- organelle that makes proteins

-smallest organelle

Ribosomes

Mitochondria- The organelle in which sugar is broken down to produce energy. (ATP)

“The mighty mitochondria” Powerhouse of the cell

Mitochondria

Golgi Complex- membrane that surrounds (packages) substances inside the cells so it can move around the cell.

Golgi Complex

Lysosomes- Organelle that digests food particles, waste, damaged cell parts, & foreign invaders

Lysosomes

Vacuoles-

Stores water and other liquids

Vacuoles

Cell wall- rigid structure that supports the cell

Chloroplast- organelle which uses the energy from the sun, water & CO22 to make sugar & O22

Cell wall & Chloroplast

Organelles found in plant cells