Wednesday, February 27, 2013

Dna And Replication Study Guide

desoxyribonucleic acid and Replication Study Guide

Vocab:

Protein: make up of 20 different amino acids; do in ribosomes

Polypeptide Chains: dour chains of amino acids.

Chromosomes: made out of DNA and Protein

Nucleotides: the subunits making up DNA ( north bases, phosphate group and deoxyribose sugar)

Purines: double go nitrogen bases and only pair with pyrimidines (adenine, guanine)

Pyrimidines: single ring nitrogen bases and only pair purines (thymine, cytosine)

DNA Replication: the subroutine of copy DNA

Orgins of Replication: where DNA replication begins; two DNA strands devote forming Y-shaped areas.

Replication Forks: Y-shaped areas

Helicase: enzyme that uncoils DNA so it can be replicated; breaks enthalpy bonds too.

DNA polymerase: the enzyme that adds new antonymous base pairs.

Peptides: the subunits that make up polypeptides.

Radical Group: the group that makes amino acids different from all(prenominal) other and gives the amino acid its unique properties

mRNA: copies the DNA and brings it to ribosomes; long straight chain made out of nucleotides and its made in the nucleus. It copies DNA and leaves through the pores. Contains A,U,G,C.

rRNA: makes ribosomes; 100-3000 nucleotides. Globular. Makes up ribosomes

tRNA: transfers amino acids to ribosomes where proteins are made.

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Codons: sequence of 3 nucleotides

Anti-codon: on a tRNA, complementary to a codon.

Protein Synthesis: production of proteins; transcription and translation

Transcription: process of copying one DNA strand to make mRNA; nucleus

Translation: decoding the mRNA into a poly peptide chain; ribosome.

fundament: first part of translation

Terminations: last stage of translation

Mutations: change in nucleotide sequence.

Notes:

History of DNA

Early scientists thought DNA was made of protein because its more complex

DNA and proteins make up chromosomes

Hershey and Chase

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