Cells

Today we will be looking at Cells for the start of the year 11 course. Answer the following in your books -

1. What are organelles?
2. Use this interactive link to describe the function of mitochondria and chloroplasts.
3. What is the function of the Golgi body?
4. Use this interactive site to find out the size of a ribosome, a mitochondrion and an egg cell.  How many micrometres are there in a metre? What is the size of the smallest thing in the diagram?
5. List two differences between plant and animal cells:
6. What are vacuoles? Why are they important for plant cells? 
7. Where did organelles originate from?
8. Watch this video, and then briefly descirbe the job of the rough E.R. and ribosomes:
9. How many cells are there in an average human body?
10. Use the activity on this link to describe what diffusion is:
11. Try this quiz on cells -