WONDER #1545: How Many Cells Are in the Human Body?

Question 1 of 3

Most cells can only be seen through a what?

1. microscope
2. magnifying glass
3. telescope
4. mirror

Question 2 of 3

There are about how many different types of cells in the human body?

1. 4
2. 42
3. 100
4. 200

Question 3 of 3

Scientists estimate there are how many cells in the average adult male body?

1. 1 million
2. 37 billion
3. 2 trillion
4. 37.2 trillion

Check your answers online at https://wonderopolis.org/wonder/how-many-cells-are-in-the-human-body.