Bill Nye – Cells



KEY

Bill Nye – Cells

1. About how many cells are in a human body?

100 Trillion

2. What happens when more cells are being produced than are dying?

Growth

3. There are two basic kinds of cells: what are they?

Plants and Animals

4. How is a room in a house similar to a cell?

Has walls; fireplace & mitochondria (energy); computer & nucleus (information); different rooms in the house have different functions; same as diff. cells in the body.

5. Name some different types of cells that can occur in a refrigerator.

Bacteria, mold, fruit cells.

6. One celled organisms can be alive: true or false (circle one)

True

7. What is deoxyribonucleic acid (DNA)?

Genetic information with a road map that tells the cells what to do or become.

8. Did you notice what Bill did with the model of DNA he was holding?

Stretching

9. What is an egg an example of?

A single cell.

10. What do seeds need in order to produce cells? Water

11. What makes red blood cells red? The Iron in Hemoglobin carrying oxygen attached to the red blood cells.

12. What is the ratio of red blood cells to white blood cells in the average human?

1000:1

13. What do white blood cells do?

Attack viruses and bacteria to keep us from getting sick or help us get better when we are sick.

14. What is osmosis?

The diffusion of water through a selectively permeable cell membrane.

Living cells are in your brain

Living things are in your veins

Living cells run through your bones

They contain all your chromosomes

Living cells have DNA

Living cells die every day

Animals have em’ and plants do too

Cells make up me and you

Living cells are specialized

They are what make things alive

Living cells have different jobs

In cows and corn on the cob

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