Understanding Cells and Their Functions

What fundamental unit is all life made of?

• Organs

• Tissues

• Cells

• Molecules

How diverse are cells in terms of their appearance and function?

• They are all identical in shape and size

• They come in a few basic types

• They come in thousands of shapes and sizes

• They are only found in two main forms

Approximately how many cells are in the human body?

• Billions

• Trillions

• Millions

• Thousands

How small are cells, relative to common objects?

• They are visible to the naked eye

• They are about the size of a grain of sand

• 10,000 cells could fit on the head of a pin

• They are as large as a human hair

What is the approximate number of chemical reactions that occur in our body's cells every second?

• Thousands

• Millions

• Billions

• Over 500 quadrillion

What has the biochemistry within cells been responsible for over a long period?

• Causing diseases

• Nurturing life on Earth

• Creating new planets

• Controlling weather patterns

Besides sustaining life, what other crucial role do cells play in the body?

• Generating electricity

• Protecting the body from harm

• Regulating sleep cycles

• Controlling emotions

What is the current state of scientific understanding regarding cells?

• Science fully understands all aspects of cells

• Science has barely begun to understand them

• Cells are too complex to ever be fully understood

• Scientists have stopped studying cells