Reviewing Nitrogen Base Pairs Which nitrogenous base always pairs with Cytosine (C)? _______________________ Which nitrogenous base always pairs with Adenine.

Slides:

Advertisements

Similar presentations

DNA Replication Ask why, when, and where they think replication occurs? Ask them to recall when copies are needed?

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.

Copying DNA 12.3 DNA Replication. Which color is the sugar? Which color is phosphate? If yellow is cytosine, what color is guanine? If green is adenine,

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

Section 12-3: DNA Replication

Lesson Overview 12.3 DNA Replication.

DNA Replication. Chromosome E. coli bacterium Bases on the chromosome DNA is very long!... but it is highly folded packed tightly to fit into the cell!

The Roles of Enzymes in DNA Replication By definition, DNA Replication is the process of making a copy of itself. In other words existing strands of DNA.

Chapter 11 DNA and Genes Section 1 DNA: The Molecule of Heredity.

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

BELL WORK: Use the following words to fill in your bubble map: Adenine (A) Base Cytosine (C) Deoxyribose DNA Guanine (G) Hydrogen Nucleic acid Nucleotide.

DNA & RNA The Nucleic Acids Remember: Each chromosome is a very long DNA molecule that contains many genes. The DNA controls the production of proteins.

DNA Structure and DNA Replication How cells make a copy of their DNA before they divide.

DNA Replication. Watch this video to see how DNA replication actually occurs. ch?v=hfZ8o9D1tushttp:// ch?v=hfZ8o9D1tus.

DNA Replication….some facts….. 1.Definition: Process by which DNA copies itself 2.Happens when chromosomes copy themselves before mitosis and meiosis (the.

DNA Word of the Day Replicate: to copy Review DNA has a _______ ________ shape. It is made up of 4 different _________. Each subunit has a _______, a.

DNA Replication. When and why must the DNA molecule be copied? Before cell division the DNA must be copied so that any new cells will have an identical.

DNA Replication What is replication? When does replication occur? Why do we need replication?

DNA Replication.

DNA Structure DNA consists of two molecules that are arranged into a ladder-like structure called a Double Helix. A molecule of DNA is made up of millions.

3 parts of a Nucleotide A ring-shaped sugar called deoxyribose

Our Guiding Question WHAT DETERMINES THE ORDER OF AMINO ACIDS IN A PROTEIN???

DNA REPLICATION Chapter 11, Section 1. DNA Review What is the building block of DNA? Nucleotides What is the shape of DNA? Double Helix What holds together.

HSPE Testing Day Tuesday, March 13 1)Short check up Friday - on DNA Structure and Replication 2)Word Wall due on Friday.

3 Question Challenge – 1/4 1. The complementary base to Adenine in DNA is ________? 2. The 3 parts of a nucleotide are a nitrogen base (A,T, C, or G);

DNA Structure & Replication Deoxyribonucleic acid.

DNA Replication.

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

DNA and Replication. Nucleic Acids: Nucleic acids are made of smaller units called nucleotides. –Each nucleotide has 3 main parts: Phosphate group Sugar.

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

Bell Work DNA replication is the process of making a copy of DNA. DNA replication occurs before a cell divides so each cell has a copy of DNA. Grab science.

DNA: STRUCTURE AND REPLICATION. DNA: The Code of Life  DNA is the molecule that contains all of the hereditary material for an organism  It is found.

DNA History Function Structure Replication. History - Structure Erwin Chargaff –1950’s Discovered that the amount of A is always equal to the amount of.

 DNA replicates before a cell divides  Occurs during the S or synthesis phase of the cell cycle  Replication creates identical copies of DNA strands.

DNA. Characteristics  DNA – Deoxyribonucleic Acid  Found in the nucleus of Eukaryotic Cells  mostly found loose in the form of chromatin  during mitosis.

Lesson Overview 12.3 DNA Replication. Lesson Overview Lesson Overview DNA Replication THINK ABOUT IT Before a cell divides, its DNA must first be copied.

Bell Ringer What are the 3 major components of DNA? 2.What are the four nitrogenous bases of DNA? 3.What bonds link together these nitrogenous bases?

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

DNA Replication.

Chapter 25 DNA replication.

DNA Replication Replication happens during the S phase of interphase before Mitosis in a cell.

DNA: Blueprint for Life

Packet 7: DNA/RNA/Protein Synthesis Notes: pg. 1-2

DNA Replication Notes Unit 5.

DNA Replication.

Bell Work What are the base pairs?

DNA Replication Created by Kim Useglia-former student teacher

Concept: Explain Transcription Using Models of DNA and RNA

Journal 5-3: Modeling DNA

DNA & Replication.

Chapter 12 Section 3 DNA Replication

1.The shape of a DNA strand is called?

DNA Replication.

Structure & Replication

DNA Replication.

= DNA Nucleotide Phosphate Nitrogen Base Pairs:

DNA Replication.

DNA Part 1: DNA Structure and Replication

DNA Replication.

Replication 1 DNA 2 DNA.

DNA Replication Hydrogen bonds Nucleotide Sugar-phosphate backbone Key

DNA Replication.

DNA Replication Goal: Students will be able to summarize the events of DNA replication.

Modern Genetics.

Reviewing Nitrogen Base Pairs

Replication Makin’ copies

DNA Replication There are _____ major steps to DNA Replication Result?

Presentation transcript:

Reviewing Nitrogen Base Pairs Which nitrogenous base always pairs with Cytosine (C)? _______________________ Which nitrogenous base always pairs with Adenine (A)?

Reviewing Nitrogen Base Pairs A double-stranded segment of DNA is 50 nucleotides long. – If 30 of the bases are adenine how many are thymine?_______ – How many are cytosine?________ – How many are guanine? ________

DNA Replication 1. What is DNA replication? 1a. The process in which a cell makes a copy of its DNA before dividing.

DNA Replication 2. What are the steps of DNA replication? Step 1: Frist the DNA strand has to split down the middle. An enzyme called helicase “unzips” the DNA molecule by breaking the weak hydrogen bonds between the complimentary base pairs.

DNA Replication 2. What are the steps of DNA replication? Step 2: New complimentary base pairs are attached to each strand. Other enzymes, called DNA polymerase, move along the bases on one of the unzipped halves and connect the complementary nucleotides. Because of the base pairing rule, only the correct, complimentary bases will fit.

DNA Replication 2. What are the steps of DNA replication? Step 3: Meanwhile, another DNA polymerase does the same thing to the other half of the original molecule.

DNA Replication 2. What are the steps of DNA replication? When it is finished, the nucleus has two identical copies of the original DNA molecule.

DNA Replication 2. What are the steps of DNA replication? Now the cell can proceed with mitosis. Each completed DNA molecule travels to opposite sides of the cell, which then divides.

U&feature=related