Cells

Mitochondria: releases energy during respiration.

Ribosomes: where protein synthesis takes place.

Cell Membrane: semi-permeable - controls what goes in and out of the cell.

Chlorophyll: traps sunlight

Nucleus: controls the activities of the cell.

Cytoplasm: where most chemical reactions take place.

Cell wall: used to strengthen cell.

Chloroplasts: absorb light energy to make food.

Permanent vacuole: filled with cell sap.

Found in...

• umbilical cord
• embryo
• bone marrow

Undifferentiated cells capable of growing into any organ.

Ethical issues - morals - killing the embryo's

Very slow _ expensive _ may cause cancer - embryonic cell.