Introduction to CellsCHAPTER 7

What is a cell?

Cells are the basic unit of all living things

UnicellularMulticellular

Shape of cells?

All shapes

What are colors of cells?

Green?

Purple?

Yellow?

Pigment

chloroplast

chromoplast

What size are cells? How many cells are in the average-sized adult human? 50 trillion How many blood cells are there in a drop a human

blood? 5 million What is the diameter of an averages sized cell (mm)? 0.008 mm What is the diameter of a cell nucleus (mm)? 0.000065 mm

http://www.cellsalive.com/howbig.htm

What is inside a cell?

Why do cells have specialized parts?

Organelles- have a specific role in the cell

Different tasks for different parts

CELLSTISSUEORGANSORGAN SYSTEMS