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  3. AP Biology - DNA Replication: Enzymes & Strand Synthesis

ap biology - dna replication: enzymes & strand synthesis

originally streamed in 2019 with Caroline KoffkeTeacher
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Learn how DNA replication works with this complete AP Biology Unit 6 review. This video breaks down semiconservative replication, enzyme functions, and leading vs. lagging strand synthesis for your AP Bio exam prep. You'll explore the molecular mech ...more

covered in this stream

units
Unit 6 – Gene Expression and Regulation
topics
6.2 DNA Replication6.1 DNA and RNA Structure DNA Replication

timestamps

  • 0:00

    Welcome and Introduction

  • 0:33

    Presenter Background

  • 1:03

    Upcoming Topics Overview

  • 1:34

    DNA Replication Overview

  • 2:05

    DNA Structure Review

  • 3:08

    Nucleotide Components

  • 4:10

    Base Pairing Rules

  • 5:15

    Hydrogen Bonds Explained

  • 6:19

    Base Structures: Purines and Pyrimidines

  • 8:03

    Pairing Justification

  • 9:03

    Sugar-Phosphate Backbone

  • 10:06

    DNA Directionality

  • 11:07

    Nucleotide Stacking

  • 12:09

    Lego Analogy for Ends

  • 14:44

    Anti-Parallel Strands

  • 16:47

    Handshake Analogy

  • 17:48

    Semi-Conservative Replication

  • 19:54

    Error Minimization

  • 21:27

    Replication Key Players

  • 23:09

    Replication Forks

  • 24:11

    Helicase Function

  • 25:12

    Single-Stranded Binding Proteins

  • 27:16

    DNA Polymerase Introduction

  • 28:52

    Polymerase Directionality

  • 30:25

    Origin of Replication

  • 32:33

    Coat Analogy Setup

  • 33:35

    Leading Strand Explanation

  • 35:09

    Lagging Strand Explanation

  • 37:43

    Zipper Demo

  • 40:16

    Okazaki Fragments

  • 43:25

    Concurrent Replication

  • 44:58

    Ligase Role

  • 46:01

    Primase and Primers

  • 48:35

    DNA Polymerase I

  • 49:36

    Proofreading Process

  • 51:11

    Error Rate Reduction

  • 53:14

    Enzyme Review

  • 54:16

    Enzyme Functions List

  • 56:20

    Prokaryotic vs Eukaryotic DNA

  • 57:55

    Polymerase Order

  • 1:00:10

    Closing Remarks

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social science

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english & capstone

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arts

šŸŽØ ap art & designšŸ–¼ļø ap art historyšŸŽµ ap music theory

science

🧬 ap biology🧪 ap chemistryā™»ļø ap environmental sciencešŸŽ” ap physics 1🧲 ap physics 2šŸ’” ap physics c: e&māš™ļø ap physics c: mechanics

math & computer science

🧮 ap calculus abā™¾ļø ap calculus bcšŸ“ ap precalculusšŸ“Š ap statisticsšŸ’» ap computer science aāŒØļø ap computer science p

world languages

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career kickstart

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go beyond AP

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honors classes

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