Science is a Process, not an Object.

Advanced Honors Biology

Blog Entries

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Polysaccharides

A common theme in biology is how large "macromolecules" from subunits, usually known as monomers. Really, I'm underselling this point. You will see it over and over for the next several months.
Two linked together is a "dimer," three is a trimer...you get the idea. We usually get lazy after "tetramer" and start calling them "oligomer" for groups that are in the range of 5-10 and then "polymer," when you get to many units…hundreds or thousands…even more. Hey…one common organic compound we will get to know is known as an "ester." What do you think we call a fiber made of many of these linked together?
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Energy

In some sense, all science comes down to understanding energy. If someone ever asks you why something happens, you can answer: "The second law of thermodynamics." It's never wrong, but also may not be very helpful unless you can make the connection to more local causes. This is the beginning of the discussion, with a biological theme.
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You are Here

In the same way that one can trace your heritage using your DNA, the evolutionary history of all living things can be fit to a tree of life. You might be surprised where you fall.
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Molecules and Basic Bonding

I want to refresh you somewhat concerning the chemistry you will need to know to understand biology. Also, we use a "short-hand" notation when drawing organic molecules (molecules including carbon and hydrogen). This blog introduces you to that system, and some of the functional groups we will use consistently.
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