'Dna packaging' diaporamas de présentation

Replication & Transcription

Replication & Transcription. Replication. One of the hallmarks of living organisms is their ability to reproduce. DNA contains the genetic information. The interrelationship of DNA,RNA & Protein. DNA Contains Four Deoxynucleotides. Double-stranded DNA.

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Tuesday December 3, 2013

Test on DNA, Cell Cycle Gene Expression, Replication, Mitosis, & maybe Mutations 12/11-12/12. Tuesday December 3, 2013. Agenda : Homework Check Discussion: Why Cells Divide, Chromosomes & Preparing for Mitosis: -------------Warm Up- -----------------------------------------------

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Regulating Eukaryotic Gene Expression

Regulating Eukaryotic Gene Expression. Fig 15.1. Why change gene expression? Different cells need different components Responding to the environment Replacement of damaged/worn-out parts. Two points to keep in mind: Cellular components are constantly turned-over.

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Organization of DNA

Organization of DNA. Viral DNA (and in some, RNA) Some circular, some linear Some double stranded, some single stranded Very small amount, packed very tightly Small size is an advantage Viruses use host cell enzymes, need few genes Bacterial DNA Usually single copy of double stranded

631 views • 31 slides

Organization of DNA

Organization of DNA. Viral DNA (and in some, RNA) Some circular, some linear Some double stranded, some single stranded Very small amount, packed very tightly Small size is an advantage Viruses use host cell enzymes, need few genes Bacterial DNA Usually single copy of double stranded

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Intro to Chromosome structure

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Gaussian Chain Entropy only. Infinite extensibility.

Gaussian Chain Entropy only. Infinite extensibility. 2. Freely Jointed Chain. Entropy. Finite extensibility. Rigid rods. ?. 3. Wormlike Chain. Entropy. Finite extensibility. Bending elasticity. Smooth curve like cooked spaghetti. Persistence length ?. ? = 50nm.

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Gene expression is controlled at many levels in prokaryotes

Internalization or exclusion of inducers Regulation of transcription initiation Regulation of transcription elongation and termination Regulation of mRNA stability or processing of primary transcripts Regulatlion of translation Regulation of protein activity and stability

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Genes & Chromosomes

Genes & Chromosomes. Chromosomes - single large DNA molecule and its associated proteins, containing many genes; stores & transmits genetic info Gene - a chromosomal segment that codes for a single functional polypeptide chain or RNA molecule

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Cell Division IAN pg. 83

Cell Division IAN pg. 83. MAIN IDEAS Growth Development Repair Apoptosis Chromosome Histone Nucleosome Chromatin. Objective: Explain and identify specific components of cell division and why it is necessary using notes and peer interaction.

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F6854

Prophage inserted in comK. ER1. ER2. R1. R2. R3. F6854. F6900. J2818. J0161. FSL J1-194. Lysogeny control. Cell lysis. Lysogeny control. DNA packaging. Tail and base structures. Head structural components & assembly.

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