Cell as the Basic Unit of Life

What are cells?

• The building blocks of rocks

• The smallest functioning unit of life

• The largest part of an organism

• The outer layer of the skin

How did scientists discover cells?

• By observing cell walls of dead cork cells

• By tasting different substances

• By looking at the stars

• By listening to cell vibrations

Who made a light microscope to discover cells?

• Robert Hooke

• Matthias Schleiden

• Theodor Schwann

• Anton van Leeuwenhoek

What is the cell theory?

• Cells are the basic unit of life

• Cells are only found in animals

• All organisms are made up of rocks

• Cells are not important for life

What can we use to observe cells nowadays?

• Binoculars

• Telescope

• X-ray machine

• Light microscope

What type of microscope is commonly used in biology labs for observing small organisms?

• Infrared microscope

• Scanning electron microscope

• Transmission electron microscope

• Light microscope

What is the magnification of a Transmission Electron Microscope (TEM)?

• Up to 10,000,000 times

• Up to 100 times

• Up to 500,000 times

• Up to 1,000 times

What is the magnification of a Scanning Electron Microscope (SEM)?

• Up to 100 times

• Up to 1,000 times

• Up to 10,000,000 times

• Up to 500,000 times

What does the Cell Theory state?

• All organisms are made up of rocks

• All organisms are made up of air

• All organisms are made up of water

• All organisms are made up of one or more cells

Which type of microscope reveals internal structures of cells?

• Ultraviolet microscope

• Light microscope

• Transmission electron microscope

• Scanning electron microscope