Recent content by icedoverfire

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    Few questions about immunology

    In response to question #2, a (very) simplistic explanation: Self and non-self are both antigen mediated... it's just that there are self antigens and non-self antigens. So I think you could say the body does create antibodies against itself, but a self antigen leads to a "null" response...
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    Understanding Alpha Helices Classifications

    Hi folks, I'm confused about classifying alpha helices. I don't understand how a 3.613 and a 310 helix differentiate... Well, I know that a 3.613 helix has 3.6 residues per turn and 13 atoms in between each hydrogen bond (I think)? Likewise a 310 helix has 3 residues per turn and 10 atoms...
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    Biology Genetics Question - Testcrossing

    Homework Statement An individual with genotype AA Bb Cc DD Ee is testcrossed. Assuming independent assortment of all gene loci, what fraction of the progeny are expected to have genotype Aa Bb Cc Dd Ee? Homework Equations Crossing AA Bb Cc Dd Ee X aa bb cc dd ee The Attempt at a...
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    Can Dropping Objects Increase Momentum?

    Question: A boy is sliding down a long icy hill on a sled. In order to decrease his mass and increase his velocity, he drops his heavy winter coat and heavy boots from the sled while he is moving. Will his strategy work? A. No, b/c he loses the potential energy of the objects he leaves...
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    MCAT Preparation Question - Solutions

    Hmm... so let me see if I understand this: - We know that the delta G value is some negative number. - We also know that the overall delta S for the reaction will be some positive number, because entropy will increase in a dissolution. wait... *lightbulb* So the deltaH that we get out of the...
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    MCAT Preparation Question - Solutions

    Hi folks, I'm currently studying for the MCAT. I did register with my MCAT prep book's website but you have to be a part of the class to post in the forums... I can only view the topics and not make posts myself. I'll be posting MCAT questions from time to time that I feel the book gives...
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