Lecture 05-1

Lecture 05-1 - LECTURE 5: DNA, RNA & PROTEINS DNA, DNA...

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LECTURE 5: LECTURE 5: DNA structure and replication RNA Structure Transcription Translation Protein synthesis Amino acids Mutations
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DNA DNA Deoxy_______________ Acid (DNA) is the blueprint for life: contains ALL the necessary information to make a new organism
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DNA structure DNA is a polymer of nucleotides Each nucleotide composed of a p________________ p________________, a s__________ (deoxyribose), and organic nitrogenous base.
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Four DNA bases Four kinds of _______________ bases : P_________ bases A = Adenine G = Guanine Pyrimidine bases T = Thymine C = Cytosine
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The four nucleotides of DNA
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DNA: Complimentary base p______ Adenine pairs with __________ A T Cytosine pairs with _________ C G Each DNA strand is a compliment of the other
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DNA STRUCTURE DNA is a _________ helix Discovered by Watson and Crick, 1953 The “backbone” of DNA: formed by sugar-phosphate chemical bonds
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DNA structure: Double _______ DNA is like a ladder:
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DNA REPLICATION (in the nucleus) Each DNA strand becomes a _______________, parent strand becomes apart Proper base-pairs are assembled on that template (with proper enzymes: polymerase and ligase). There’s always a pool of nucleotides (A,C,T,G) in the nucleus
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DNA replication Nucleotides are connected together to make a new strand that is c_______________ to the old strand. The new double strand is ________ to the old double strand S_____-conservative replication: half old, half new DNA on each strand
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A-T vs. G-C bond A-T is a __________ bond… C-G is a ________ bond (stronger)… DNA double strand can separate into 2 single strands when heated. Which strand would require more heat (more energy) to separate: an A-T rich or a C-G rich double strand?
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RNA structure and synthesis RNA: R______________ Acid Is very similar to DNA (repeating subunits, nucleotides). Difference between RNA and DNA:
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This note was uploaded on 01/28/2012 for the course BSCI 125 taught by Professor Gonzalez during the Fall '11 term at Maryland.

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Lecture 05-1 - LECTURE 5: DNA, RNA & PROTEINS DNA, DNA...

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