Thursday, November 02, 2006

What's the plot of this story?

We have a new instructor now, and we have a new series of topics. Take a minute to think about where we've been, and where we are going.
First, we learned about what is inside a cell. You learned about the important biological molecules, and how they interact inside and outside the cell. You learned about how cells make and use energy. Then we started talking about mitosis, and meiosis, and now genes.... what's the story here?
Imagine the class is attempting to give you all the information you need to understand how an organism grows from a fused egg and sperm. You need to know:

1. How cells function in the mature organism - making proteins, maintaining electrochemical gradients, secreting signals into the blood, etc.
2. How cell functions are governed by genetic instructions in DNA.
3. How the genetic instructions for the organism get into the egg and sperm.
4. How mature organisms grow from a single fertilized egg.

So far we've covered step 1, some of 2, and all of 3. Much of the focus in the next weeks will be step 4. On Friday, we'll make sure you are equipped to learn all the information to follow! Print the worksheet here, and THIS week I want you to try to answer the questions before you come in. See you Friday!

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