cramming for the win

Colleges & Universities University of California - Berkeley
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<p>^Aren’t DNA and RNA nucleic acids?</p>

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<p>phosphodiester is a C-P-C bond and phosphoester is C-P-(something else). Point being, diester means 2 and just ester means 1.</p>

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<p>does anyone know an easy way to memorize the differences between amylose, amylopectin, glycogen, and cellulose? like the branching and the type of units they have?</p>

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<p>^calbear yeah i meant individual nucleic acids
DNA/RNA nucleotides are connected through phosphodiester bonds i think</p>

<p>energy storage (all are alpha)

  • plants (starch)
    ~amylose is unbranched
    ~amylopectin is branched
    -animals (glycogen)
    ~branched</p>

<p>structural

  • cellulose: unbranched, beta</p>

<p>probably not an easy way but i think all that info is right?</p>

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<p>ok, so…
energy storage is alpha-glucose
structural is beta-glucose
etc…</p>

<p>isn’t glycogen highly branched?</p>

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<p>Unbranched is 1-4 linkage
Branched is 1-4 + 1-6 linkage</p>

<p>All energy storage polysaccharides are alpha, all structural (cellulose) is beta.</p>

<p>Glycogen is highly branched, amylopectin is branched, and amylose and cellulose are unbranched. </p>

<p>I think this helped me a lot when I was trying to memorize. .</p>

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<p>do prosthetic groups bind at active sites? do they bind covalently?</p>

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<p>ok cool, that is pretty helpful.</p>

<p>What’s the difference between a glyceride, and a glycerol?</p>

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<p>@flutterfly: prosthetic groups should be found at active sites at an enzyme most of the time. yes, i think prosthetic groups are bound covalently to enzymes.</p>

<p>@jb: glycerol has 3 alcohols. glyceride is something else entirely i think?</p>

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<p>also ester is actually -C-O-C-</p>

<p>phosphoester is -C-O-P-</p>

<p>phosphodiester is -C-O-P-O-C-</p>

<p>lol that was a ***** to type</p>

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<p>by the way, how are you guys scoring on the practice midterms? i keep getting B’s on them, but when i go back to look at the answers i know the information but i just mis-read or forget one of the answer choices or something.</p>

<p>damn malkin and his A & B or A,B,&C questions. :(</p>

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<p>I’m getting A+s all day errday.</p>

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<p>@MechRocket yeah, that’s more correct, i meant P for phospate (PO4)</p>

<p>sometimes the AB or ABC questions help though if you can do process of elimination. Although yes, they can be a pain sometimes. Did anyone else think the second practice test was slightly more difficult?</p>

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<p>yeah i scored worse on that than i did on MT1.</p>

<p>i got a B on MT1 even though I hadn’t looked over Lectures 12+13 yet (so i missed like the last 4-5 questions in a row on photosynthesis lol), but when I took MT2 i had already looked over everything and still got a B. :(</p>

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<p>yeah, same exact thing happened to me.</p>

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<p>HEY does anyone have the 2 Midterms from the Exam Reader in PDF format? i want to work through some of the questions again but like the dumbass i am i did everything in pen the first time through. fail.</p>

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<p>Other than from plastiquinone and the reduction of water, is there anything else that provides H+ in the light reactions?</p>

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<p>the cytochrome b6-f complex does, as shown in the Reader. however, a GSI told me we didn’t have to know it in that much detail.</p>

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<p>what’s a diglyceride?</p>

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<p>A diglyceride, or a diacylglycerol (DAG), is a glyceride consisting of two fatty acid chains covalently bonded to a glycerol molecule through ester linkages.</p>

<p>lol from wiki</p>