ROBERT HOOKE 1 st to see cells. Cork Cells Cork cells. Are they living? Which cell part are we seeing here?

ROBERT HOOKE 1st to see cells

Cork Cells

Cork cells. Are they living? Which cell part are we seeing here?

Hookes’ actual sketch of cork Cells done in 1653

CELL THEORY

• ALL living things are made of 1 or more cells• CELLS come only from other

living cells• A CELL is the basic unit of

structure and function in all living things

A THEORY

• Is NOT an educated Guess.

A THEORY

• * Explains many observations

• * Is Testable

• * Could be disproven

• * Allows us to make accurate predictions

Find: Mitochondria, endoplasmic reticulum, ribosomes

CHLOROPLASTS

Chloroplasts. Where photosynthesis happens

Large central vacuoles in plant cells

Golgi Complex

Photo: Golgi complex pinching off vesicles full of proteins.

Photo of a golgi complex

Golgi 3D View

Bacteria Cell

Cells have an internal skeleton

An Onion Cell Nucleus absorbs iodine and stains darker than the cytoplasm

Fluorescent stain makes nucleus glow Blue

Another color stain. Nuclei are dark red

Cancer Cells often have more than 1 nucleus

Cancer cell with several nuclei

Evidence of cancer ?

Is There evidence of cancer?