Structure of DNA
Jan 07, 2020
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Section Objectives:. Structure of DNA. How the structure of DNA enables it to reproduce itself accurately. What is DNA?. Although the environment influences how an organism develops, the genetic information held in the molecules of DNA ultimately determines an organism’s traits.
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- original dna
- labeled viruses
- original dna strand
- repeating subunits called nucleotides
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Section Objectives: • Structure of DNA • How the structure of DNA enables it to reproduce itself accurately.
What is DNA? • Although the environment influences how an organism develops, the genetic information held in the molecules of DNA ultimately determines an organism’s traits. • DNA determines the structure of proteins.
What is DNA? • All actions, such as eating, running, and even thinking, depend on proteins called enzymes. • Enzymes control the chemical reactions needed for life. • DNA —is the complete instructions for manufacturing all the proteins for an organism.
DNA as the genetic material • In 1952 Alfred Hershey and Martha Chase – believed proteins coded for life so the performed an experiment using radioactively labeled viruses that infect bacteria. • Hershey and Chase labeled the virus DNA with a radioactive isotope and the virus protein with a different isotope. • By following the infection of bacterial cells by the labeled viruses, they demonstrated that DNA, rather than protein, entered the cells and caused the bacteria to produce new viruses.
The structure of nucleotides • DNA is a polymer made of repeating subunits called nucleotides. Nucleotides have three parts: a simple sugar, a phosphate group, and a nitrogenous base. Phosphate group Nitrogenous base Sugar (deoxyribose)
The structure of nucleotides • The simple sugar in DNA, called deoxyribose (dee ahk sih RI bos), gives DNA its name—deoxyribonucleic acid. • The phosphate group is composed of one atom of phosphorus surrounded by four oxygen atoms. • A nitrogenous base is a carbon ring structure that contains one or more atoms of nitrogen.
The structure of nucleotides • In DNA, there are four possible nitrogenous bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Purines – Double ringed Pyrimidines – single ringed Cytosine (C) Guanine (G) Thymine (T) Adenine (A)
The structure of nucleotides • A = T • C = G 2 H- bonds 3 H-bonds
The structure of DNA • In 1953, Watson and Crick proposed the structure of DNA • DNA is shaped like a long zipper that is twisted into a coil like a spring. its shape is called double helix.
DNA Replication of DNA • Before a cell can divide by mitosis or meiosis, it must first make a copy of its chromosomes. - DNA replication Replication • Without DNA replication, new cells would have only half the DNA of their parents. Replication
Replication of DNA Click this image to view movie
Copying DNA New DNA molecule Original DNA Strand Free Nucleotides New DNA molecule New DNA Strand Original DNA Strand Original DNA • DNA is copied during interphase prior to mitosis and meiosis.
Question 1 What importance did the experiment performed by Alfred Hershey and Martha Chase have in determining what genetic material was? Answer Many scientists believed protein was the genetic material. However, an experiment using radioactively labeled viruses allowed Hershey and Chase to provide convincing evidence that DNA is the genetic material.
Question 2 Which of the following is NOT a component of DNA? A. simple sugars B. phosphate groups C. nitrogenous bases D. proteins The answer is D.
Question 3 Which of the following correctly comprises a complimentary base pair? A. adenine – thymine B. thymine – guanine C. guanine – adenine D. cytosine – thymine The answer is A.
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DNA Structure.
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Presentation on theme: "DNA Structure."— Presentation transcript:
DNA Structure The Genetic Material.
Nucleic Acids -DNA and RNA
DNA stands for Deoxyribonucleic acid DNA Structure DNA consists of two molecules that are arranged into a ladder-like structure called a Double Helix.
Unit 2 – PART A Inside the Nucleus DNA Sturcture.
DNA: The Molecule of Heredity
Chapter 11: DNA and Genes (Part 1). 1. Although the environment influences how an organism develops, the genetic information that is held in the molecules.
DNA. Nucleic Acids Informational polymers Made of C,H,O,N and P No general formula Examples: DNA and RNA.
DNA REVIEW Objective: To review the structure and function of DNA.
NUCLEIC ACIDS.
What is this DNA you speak of? DNA stands for deoxyribonucleic acid - Found in nucleus of eukaryotic cells - Found in cytoplasm of protists.
Nucleic Acids.
DNA (deoxyribonucleic acid) consists of three components.
D.N.A. DeoxyriboNucleic Acid
1 2 DNA DNA.DNA is the blueprint of life. DNA contains the instructions for making proteins.
Chap. 10 : Nucleic Acids & Protein Synthesis I. DNA – deoxyribonucleic acid - function – store and use information to direct activities of the cell and.
Section 11.1 DNA: The Molecule of Heredity. Within the structure of DNA, is the complete instructions for manufacturing all the proteins for an organism.
DNA: Structure. DNA Structure and Purpose In simplest terms, DNA is a blueprint for life. It is made up of genes which hold the information for making.
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IB Biology Topic 7.1 DNA Structure and Replication PPT
Subject: Biology
Age range: 16+
Resource type: Lesson (complete)
Last updated
18 November 2022
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Created by an IB Assistant Examiner, this complete IB Biology lesson slideshow has everything you need to teach IBDP Biology 7.1 DNA Structure and Replication to your HL IB Diploma students. This 42-slide Google Slides Presentation can be used both in-person and for online learning, added to your Google Classroom, or downloaded as a PowerPoint presentation.
Save yourself time - don’t recreate the wheel. Ready to use as-is with no effort needed from you! All my resources are informed by over two decades of IB DP Bio teaching experience, so you can be sure you are getting a quality resource with everything you need to teach the IB DP Biology content.
This is a subtopic of IB Diploma Biology, Topic 7: Nucleic Acids which extends the content covered in the Core Topics of 2.6 DNA and RNA Structure and 2.7 DNA Replication, Transcription and Translation.
42 Slides Multimedia links such as videos Highly visual, with clear definitions (helpful for EAL/ESL students) Clear bullet points (not too much text on each slide) and images Use of IB Command terms for tasks (state, discuss, explain, etc). Student tasks Official IB understandings and guidance Easy to use, and organised to be used as-is Introduction and Review slides
Also suitable for other curriculum programs - any kind of High School Biology course that focuses on scientific inquiry, such as AP Biology or Honors Biology.
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A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
IB Biology Topic 7 Nucleic Acids Bundle - Higher Level
Created by an IB Assistant Examiner. Complete IBDP Biology Higher Level AHL Topic 7 BUNDLE - everything you need to teach the IB Diploma HL Biology topic, Nucleic Acids. This bundle contains 133 slides, approximately nine hours of lessons. The three Google Slides Presentations cab be used in-person and online or distance learning. These can also be added to your Google Classroom, or downloaded as a PowerPoint presentations. Save yourself time - don't recreate the wheel. This resource is ready to use as-is with no effort needed from you! All my resources are informed by my more than two decades experience teaching IB Biology, so you can be sure you are getting the right information. **Bundle Contains:** **IBDP Biology Topic 7.1: DNA Structure and Replication IBDP Biology Topic 7.2: Transcription and Gene Expression IBDP Biology Topic 7.3: Translation** **Features of the PowerPoint Presentations:** * Multimedia links such as videos and animations * Highly visual, with clear definitions (helpful for EAL/ESL students) * Clear bullet points (not too much text on each slide) and helpful images * Links to websites and articles for further inquiry and extension * ToK (Theory of Knowledge) links * Use of IB Command terms for tasks (state, discuss, explain, etc). * Student tasks * Exam review questions from past IB Exams, plus mark schemes Official IB understandings and guidance Easy to use, and organised to be used as-is Introduction and Review slides These International Baccalaureate Diploma Progamme guided inquiry lessons are also suitable for other curriculum programs - any kind of High School Biology course that focuses on scientific inquiry, such as AP Biology or Honors Biology.
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COMMENTS
DNA is made up of deoxyribose, phosphate groups, and four nitrogenous bases (adenine, guanine, cytosine, thymine). 2. The bases pair up through hydrogen bonding between complementary base pairs (adenine with thymine, cytosine with guanine). 3. The paired bases and sugar-phosphate backbone form the structure of the DNA double helix, with the ...
DNA's Role. This chemical substance is present in the nucleus. of all cells in all living organisms. DNA controls chemical changes which. take place in cells. The kind of cell which is formed, (muscle, nerve etc) is controlled by DNA. The kind of organism produced (buttercup, giraffe, human etc) is controlled by DNA.
The Double-Helix Model. A double helix looks like a twisted ladder. In the double-helix model of DNA, the two strands twist around each other like spiral staircases. The double helix accounted for Franklin's X-ray pattern and explains Chargaff's rule of base pairing and how the two strands of DNA are held together.
DNA is a macromolecule. It is a type of nucleic acid. DNA is a polymer (many units connected to each other) of nucleotides. DNA Stands for Deoxyribonucleic acid. . People important to the discovery of DNA Structure. Watson, Crick, & Wilkins were awarded a Nobel Prize because they were the first to make a model of the double helix shape.
DNA: Structure and Function. Unit 7. Recall:. DNA is made of nucleotides Nucleotides contain a sugar, phosphate, and a base In DNA, the bases are adenine, cytosine, guanine, and thymine. What is DNA?. Deoxyribonucleic acid The "blueprint" of the cell Stores genetic information. Download Presentation. long polypeptide chains.
1. Principle of Segregation: Two members of a gene pair segregate from each other in the formation of gametes; half the gametes carry one allele, and the other half carry the other allele What it means: each gene has two copies (alleles) and a parent will give only one copy to a child. The other parent will give another copy, and thus the child ...
Presentation transcript: 2 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 of tiny subunits called Nucleotides. Each nucleotide consists of: Phosphate group Pentose sugar Nitrogenous base. 4 Nucleotides The phosphate and sugar form the ...
Attachments. DNA1.ppt A sample powerpoint of DNA structure and function, includes links to animations of replication transcription and translation. Present power point presentation, and discuss concepts shown to help students to understand concepts. Have students build DNA models out of paper and demonstrate replication, and transcription.
Presentation on theme: "The Structure of DNA and RNA"— Presentation transcript: 1 The Structure of DNA and RNA All life on earth uses a chemical called DNA to carry its genetic code or blueprint. In this lesson we be examining the structure of this unique molecule. {Point out the alligator's eyes in the first picture.}
2 Nucleic Acids The nucleic acids DNA and RNA are polymers of nucleotides. (2U.1) Three major types: ATP (adenosine triphosphate) DNA (deoxyribonucleic acid) RNA (ribonucleic acid) DNA and RNA are polymers of nucleotides. Nucleotides are composed of three parts: Phosphate group 5-carbon monosaccharide (sugar) Nitrogenous base. 3 Draw a nucleotide.
The structure of DNA • In 1953, Watson and Crick proposed the structure of DNA • DNA is shaped like a long zipper that is twisted into a coil like a spring. its shape is called double helix. DNA Replication of DNA • Before a cell can divide by mitosis or meiosis, it must first make a copy of its chromosomes.
DNA Lesson for High School. Download the "DNA Lesson for High School" presentation for PowerPoint or Google Slides. High school students are approaching adulthood, and therefore, this template's design reflects the mature nature of their education. Customize the well-defined sections, integrate multimedia and interactive elements and allow ...
Free Google Slides theme and PowerPoint template. Download the "DNA, Genes and Chromosomes" presentation for PowerPoint or Google Slides. Healthcare goes beyond curing patients and combating illnesses. Raising awareness about diseases, informing people about prevention methods, discussing some good practices, or even talking about a balanced ...
Presentation on theme: "DNA Structure."— Presentation transcript: ... 5 DNA structure PO4 DNA is a double Helix Meaning DNA has two strands. ... Download ppt "DNA Structure." Similar presentations . DNA Notes. DNA Structure The Genetic Material. Nucleic Acids -DNA and RNA.
J. Jenson Samraj. The present slide describes the DNA Structures and the components of the DNA along with the illustrative structures. Environment. 1 of 47. Download now. Download to read offline. Structure of DNA - Download as a PDF or view online for free.
Lesson-4-Molecular-Structure-of-DNA-RNA-and-Proteins.pptx - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Scribd is the world's largest social reading and publishing site.
DNA Structure History Thesis: Double Helix Presentation . Education . Premium Google Slides theme, PowerPoint template, and Canva presentation template . Cool template designs are in Slidesgo's DNA. But what's inside a human's DNA? If you have investigated the language that shapes our species, this template is the perfect ally for your ...
pptx, 3.05 MB. Created by an IB Assistant Examiner, this complete IB Biology lesson slideshow has everything you need to teach IBDP Biology 7.1 DNA Structure and Replication to your HL IB Diploma students. This 42-slide Google Slides Presentation can be used both in-person and for online learning, added to your Google Classroom, or downloaded ...