Homeostasis

Which is a characteristic of bacteria?

• large in size
• found only in one particular environment
• made up of many different cells working together
• able to survive as a single cell

Which organism is best classified as a single-celled organism?

• grasshopper
• bacteria
• pine needle
• mole

Unicellular or Multicellular?

Euglena

• Unicellular

• Multicellular

Unicellular or Multicellular?

Lady Bug

• Unicellular

• Multicellular

Unicellular or Multicellular?

E. Coli Bacteria

• Unicellular

• Multicellular

Unicellular or Multicellular?

Yeast

• Unicellular

• Multicellular

Unicellular or Multicellular?

Paramecium

• Unicellular

• Multicellular

Unicellular or Multicellular?

Staph Bacteria

• Unicellular

• Multicellular

Basic unit of life

• Cell
• Tissue
• Organ
• Organ System

Which of the following is the correct order of organization in living things from most basic (simple) to most complex?

• a.  Organism, cell, tissue, organ, organ system
• a.  Organ system, organ, tissue, cell, organism
• a.  Cell, tissue, organ, organ system, organism
• a.  Cell, organ, tissue, organ, organism, organ system