A Closer Look at DNA.

Slides:

Advertisements

Similar presentations

DNA Replication. Each cell within a body contains the same DNA sequence. Why? Before the cell divides, an exact copy of DNA is made- process called REPLICATION.

Advertisements

DNA Review What does DNA store that is important? If a DNA strand read AGT-CCG-GTA what would the complimentary strand read? What holds the nitrogen bases.

SECTION 12.2 AND 12.3 DNA DNA IS DYNAMITE! Chapter 12 Nucleic Acids and Protein Synthesis.

SC.L.16.3 Describe the basic process of DNA replication and how it relates to the transmission and conservation of the genetic information.

PROTEIN SYNTHESIS. DNA RNA Protein Scientists call this the: Central Dogma of Biology!

DNA REPLICATION We know we need to copy a cells DNA before a cell can divide, but how is DNA copied? There were 3 possible models for DNA copies to be.

DNA Replication. Cell Division and DNA Replication Cells divide -->Growth, Repair, Replacement Before cells divide they have to double cell structures,

DNA Deoxyribonucleic Acid D – Deoxyribo N – Nucleic A – Acid.

DNA The Molecule of Heredity Chapter DNA - Deoxyribonucleic Acid Contains genetic information (genes) Strands of repeating molecules that make.

DNA Deoxyribonucleic Acid. What are the building blocks of DNA? DNA is an organic macromolecule. It contains the genetic blueprint in life Shape is described.

May Alrashed, PhD May Alrashed, PhD May Alrashed, PhD What is a chromosome? Chromosome Structure made of DNA and associated proteins.

III. DNA Replication A. Each chain of nucleotides of the DNA double helix has all the information needed to reconstruct the complementary chain of nucleotides.

DNA’s Structure. The Shape of DNA DNA has a shape called a Double Helix When flattened out it would look like a ladder.

DNADNA. Structure and replication of DNA - syllabus content Structure of DNA — nucleotides contain deoxyribose sugar, phosphate and base. DNA has a sugar–phosphate.

KEY CONCEPT DNA replication copies the genetic information of a cell.

REPLICATION: How do we get more DNA?. Definition: The process of synthesizing a new strand of DNA.

THE STRUCTURE OF DNA Chapter 12… section 12.1 & 12.2.

DNA – The building blocks of life. DNA stands for Deoxyribonucleic Acid and is responsible for: a) storing and passing on genetic information from one.

DNA Replication IB Topic 3.4 Page 65. Answers to your homework (#8-11 page 65)  8. The phosphate groups and deoxyribose sugars within DNA molecules are.

Warm Up! 1. What kind of biomolecule is DNA? 2. What function does it have? 3. What are the building blocks?

Have Your DNA and Eat It Too I will be able to describe the structure of the DNA molecule I will be able to explain the rules of base pairing I will understand.

8.3 DNA Replication KEY CONCEPT General Description: DNA replication copies the genetic information of a cell.

DNA Replication IB Topic 3.4 Campbell Chapter 16.

DNA Notes. GENOME The nucleus of a human cell contains to genes in the form of DNA called the GENOME.

{ DNA Replication.  When DNA makes an exact copy of itself.  Required step before cell division (making new cells).  DNA is the template / Enzymes.

DNA: Structure and Replication DNA DNA. DNA is often called the blueprint of life. DNA contains the instructions for making proteins within the cell.

Chapter 10 Part - 1 Molecular Biology of the Gene - DNA Structure and Replication.

Molecules to Eye Color DNA, RNA and Protein Synthesis.

DNA and RNA Structure and Function Chapter 12 DNA DEOXYRIBONUCLEIC ACID Section 12-1.

The Structure of DNA. DNA is a nucleic acid. There are two types of nucleic acids: __________ or deoxyribonucleic acid __________ or ribonucleic acid.

DNA Structure Analysis Questions Answered

Unit 2.1: BASIC PRINCIPLES OF HUMAN GENETICS

Wake-up Draw and label a nucleotide.

Chapter 25 DNA replication.

DNA and Replication.

DNA Structure and Replication

DNA The Secret Code.

RHS SCIENCE DNA Replication Animation factory.

1 DNA The illustration is a ‘model’ of the double helix forming part of a DNA molecule (Slide 14)

DNA Structure Analysis Questions Answered

1 DNA The illustration is a ‘model’ of the double helix forming part of a DNA molecule (Slide 14)

Nucleic Acids and Protein Synthesis

DNA The Secret Code.

Chapter 13 packet: DNA and Protein Synthesis Part I

AIM: How are DNA molecules structured

Ch.9: DNA Structure & Replication

Section 8-3 “DNA Replication”

KEY CONCEPT DNA replication copies the genetic information of a cell.

KEY CONCEPT DNA replication copies the genetic information of a cell.

Unit 2.1: BASIC PRINCIPLES OF HUMAN GENETICS

DNA vs RNA DNA 1- Deoxyribose sugar

Biology 1-1b DNA Replication.

Introducing: DNA.

Deoxyribonucleic Acid (DNA)

DNA and Replication.

DNA Structure and Replication REVIEW

REVISION: DNA STRUCTURE & REPLICATION

DNA Part 1: DNA Structure and Replication

KEY CONCEPT DNA replication copies the genetic information of a cell.

DNA and Replication.

DNA, Genes and Genomics.

DNA Structure & Function

Modern Genetics.

Replication Makin’ copies

The Structure and Function of DNA

Structure of DNA (Most slides should be a review you NEED to have the underlined text in notes along with drawings that I say put in notes )

DNA structure DNA is made of subunits called Nucleotides

Presentation transcript:

A Closer Look at DNA

Review Questions (Discuss the answers) What are the 3 parts of a DNA nucleotide? What is the technical term for the “twisted ladder” shape of the DNA molecule? What makes up the “legs” of the DNA ladder? What makes up the “rungs” of the DNA ladder?

Answers What are the 3 parts of a DNA nucleotide? 1. phosphate group 2. deoxyribose sugar 3. nitrogen base

Answers What is the technical term for the “twisted ladder” shape of the DNA molecule? double helix

Answers What makes up the “legs” of the DNA ladder? The deoxyribose sugars and phosphate groups of the nucleotides bond together to form the “backbone” of the DNA molecule.

Answers What makes up the “rungs” of the DNA ladder? (AT & GC) Pairs of nitrogen bases form the “rungs” of the DNA molecule. (AT & GC)

Review: Patterns of Base Pairing Base pairs are formed by the hydrogen bonding of A with T and G with C. This pattern is constant for all organisms. The sequence of bases in a nucleotide strand is different from one species to the next.

A Closer Look at DNA: Two Questions How is DNA copied? If a mistake occurs in the copy, how is it repaired?

DNA Replication… …is the process by which DNA is duplicated prior to cell division. 2 Steps of DNA Replication The two strands of DNA unwind and expose their bases. Unattached nucleotides are paired with exposed bases.

Replication Enzymes DNA helicase: unwinds the double helix DNA polymerase: assembles the nucleotides into chains DNA ligase: seals sections of new DNA into continuous strands http://www.johnkyrk.com/DNAreplication.html

“Semiconservative Replication” DNA replication results in DNA molecules that consist of one “old” strand and one “new” strand.

“Semiconservative Replication”

DNA Repair… …is the process by which enzymes remove and replace altered parts of the base sequence in one strand of DNA. DNA polymerases, DNA ligases, and other enzymes are also involved in DNA repair.

Genes Genes are portions of the DNA strand that tell the body what proteins to make. These proteins help carry out the functions of the cell.