DNA revision

Today we're going to look at what we've covered with DNA so far, to help us prepare for after half term. Complete the following:

1. Watch this video. Write down two things that you didn't know the cell did.
2. How do the four bases join up?
3. Complete some of the activities here. What do the different parts of the body have in common? What are some differences?
4. Give the size of one chromosome:
5. Roughly what length of DNA is contained in each cell?
6. How many pairs of chromosomes do human cells have? What is the difference between male and female cells?
7. What makes a firefly glow? 
8. There are lots of good activities on this link, try whatever you like.