Science is a Process, not an Object.

Honors Biology Prep

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Cell Cycle

This is a brief introduction the cell cycle. As we discussed on Thursday, there are some minimal things we know have to go on.
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Signaling Introduction

We will go over a brief primer of signaling. I want everyone to have the tools to read some of what they are working on as well as providing the rest of the class with the tools to understand.
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The diagram contains sort of the overview of what happens. Most bio classes start out with glycolysis. This is not like most biology classes.
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In some ways, photosynthesis and respiration are the opposites of each other. As we go through it, think "follow the electrons."

Here is a
link to a "mind map" comparing and contrasting the two.

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Transport Proteins

One of the main things a membrane has to be able to do is control what flows through it. Sometime, that's just opening a channel and letting the dissolved thing flow "down gradient." But, sometime the cell has to do active work to pump ions to one side or the other of a membrane.
Once that gradient is established, it can be used to do work…and in fact used in myriad ways you can hardly imagine. Since it is so important, we will spend some time on it.
By the way, the figure is a cartoon of a protein called "aquaporin." Guess what it transports. It's a fascinating protein. Think about how you can make a protein that allows water…and only water…to pass through.
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