Science Exam

Microscopes help scientists to discover that living organisms bodies.

• brick

• cell

Humans are.................. organisms.

• unicellular

• prokaryote

• multicellular

The smallest tiny structures that build up all living organism's bodies are

• systems

• cells

• organs

• bricks

Which of the following is the correct arrangement of the structure of most of multicellular organisms bodies?

• Similar cells Organs Tissues → Systems

• Similar cells → Tissues Organs Systems

• Organs → Tissues → Systems → Similar cells

• Tissues → Similar cells Organs → Systems

Stomach is composed of a group of different

• bacteria

• systems

• organs

The body of unicellular organism consists of

• one cell only

• three cells only

• six cells only

• many cells

The cell needs..............to get its needed energy and to stay alive.

• oxygen only

• water only

• food and water only

• food, oxygen and water

All the following living organisms bodies are build up of many cells, except

• human

• bacteria

• a big tree

• an elephant