Sandwalk
Strolling with a skeptical biochemist
Friday, July 20, 2007
200,000 Visits
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According to Sitemeter I've had 200,000 visits to Sandwalk since I started last November. I have to admit that I'm fascinated by t...
9 comments:
Thursday, July 19, 2007
The Story of DNA (Part 1)
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Where Rosalind Franklin Teaches Jim and Francis Something about Basic Chemistry What we now know as DNA was first isolated in 1868 by Joha...
4 comments:
The Three-Dimensional Structure of DNA
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In order to understand the three-dimensional structure of DNA, it’s convenient to think of DNA as a ladder-like molecule with a very regular...
1 comment:
The Chemical Structure of Double-Stranded DNA
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Double-stranded DNA consists of two complementary polynucleotide chains where the bases on one strand form hydrogen-bonded associations wi...
7 comments:
Wednesday, July 18, 2007
Dead Soldier's Mother Asks Us to Support Troops
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Here's one of those difficult situations that can cause much confusion. The Toronto Star recently reported on the funeral of a soldier...
24 comments:
Nobel Laureates: Francis Crick, James Watson, and Maurice Wilkins
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The Nobel Prize in Physiology or Medicine 1962. "for their discoveries concerning the molecular structure of nucleic acids and its ...
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Tuesday, July 17, 2007
Nucleotides Can Adopt Many Different Conformations
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Individual nucleotides in solution can adopt many different conformations. For example, the deoxyribose sugars can bend and twist in many ...
The Calvin Cycle: Regeneration
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Nobody took me up on the offer to become an intelligent designer. The goal was to figure out a way of converting the five products of the ...
11 comments:
Tautomers of Adenine, Cytosine, Guanine, and Thymine
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The four bases of DNA can exist in at least two tautomeric forms as shown below. Adenine and cytosine (which are cyclic amidines) can exis...
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DNA Is a Polynucleotide
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DNA is composed of nucleotides strung together to make a long chain called a polynucleotide. There are four basic nucleotides in DNA. They...
1 comment:
Are You a Non-Conformist?
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You Are 79% Non Conformist You are a pretty serious non conformist. You live a life hardly anyone understands. And while some may call you...
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Monday, July 16, 2007
The Oldest Organisms on Earth
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Today's Botany Photo of the Day is Pinus longaeva , bristlecone pine. Trees of this species are generally considered to be "the ...
6 comments:
The Calvin Cycle
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Are You an Intelligent Designer? The Rubisco reaction results in fixation of carbon dioxide and the production of two molecules of glycera...
Monday's Molecule #35
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This is a very common chemical found in most biochemistry labs. There's a very familiar form of this molecule and most of you will kno...
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Casy Luskin Gets it Wrong (Again)
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This is getting to be really annoying. What is it about the concepts of junk DNA and Darwinism that confuse the IDiots? It's not rocke...
12 comments:
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