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UA PSIO 201 - DNA
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PSIO 201 1st Edition Lecture 6Outline of Last Lecture I. Cellular Level of Organization: Cell CytoplasmOutline of Current Lecture II. Cellular Level of Organization IV & V: The Nucleus and Regulation of Gene ExpressionIII. The NucleusIV. Chromosome StructureV. DNACurrent Lecture- Nucleus: contains the genetic material that determines how many proteins will be made.- Chromatin includes DNA found in the nucleus that is surrounded by nuclear pores; where the gene encodes for protein.- Chromosome found in the nucleic acid contains histones and proteins. Chromatin cells tightly coil to form chromatid, which is the make up of a chromosome.- 3 Constituents make DNA: 1. Sugar (deoxyribose)2. Phosphate group3. One of the nitrogenous bases (Adenine, Guanine, Cytosine, and Thymine)- Base + Sugar = nucleoside- Nucleoside + phosphate = nucleotide- Nucleic acid is a sequence of nucleotides- DNA is sequences from 5’ to 3’. Phosphate (5’) to deoxyribose (3’)- Complimentary pairing of nucleotides ensures that each strand permits regeneration of the other- “Double Helix” is the storage of information and the creator of protein sequences- A Codon – 3 bases that represent one of the 20 different amino acids (e.g. A-T-C)- Gene- series of codons that represent a single polypeptide (protein)- Nucleic acid = sugar, phosphate, base- Chromatid= protein + histones- Chromosome= condensed chromatidThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best Used as a supplement to your own notes, not as a


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UA PSIO 201 - DNA

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