1. 7:27 - Why do scientists use a lot of tools ? - Do scientists use different tools? 2. 8:58 - When does a scientist decide when to use which tools? 3. 10:19 - Is there a special tool [scientists] use a lot ? 4. 13:30 - What types of microscopes are there? 5. 15:27 - Why do scientists use pipettes? 6. 16:48 - Why do scientists use microscopes? - How do microscopes work? 7. 20:21 - Why do some things look really plain to the naked eye, but completely different under a microscope? 8. 23:35 - Why do scientists use tools for dissection? 9. 24:58 - What lenses do you use for the microscopes to see really close into stuff? - ¿Cómo puedo ver las bacterias de mi mano?/How do I see the bacteria on my hands? 10. 27:09 - What is a microscope’s max capacity for further sight? 11. 30:23 - What do you use to look into people’s bodies? 12. 32:25 - How do our cells stay together? 13. 33:49 - How do you study DNA? 14. 35:04 - How big is the DNA? What would it look like up close? 15. 36:53 - Can a scientist view a virus under the microscope? (Jane: and what is the size of a virus compared to DNA?) 16. 39:57 - Why do we need DNA? 17. 41:12 - (Jane: can use DNA as a tool?) 18. 43:31 - Why do scientists put DNA in other stuff like seeds and cows? 19. 44:14 - Who came up with microscopes? - Who was the first person to make the first microscope? 20. 48:19 - How does radiation affect DNA? 21. 49:56 - Why did we start using DNA to [get information about life]? 22. 51:08 - [How do bacteria relate to cells?] 23. 51:58 - Do some tools you use fail? Do you create your tools? 24. 55:09 - What materials are most often used to create tools that scientists use? 25. 58:24 - Do scientists ever use tools to study how far [animals] move?