Ocr a level biology nucleotides and nucleic acids Study with Quizlet and memorise flashcards containing terms like DNA is a polymer. Purines Study with Quizlet and memorise flashcards containing terms like Draw and label the basic structure of the nucleotide, Draw a nucleotide, State the two main types of nucleic acid and others. Sep 25, 2025 · Learn about nucleotides for your CIE A Level Biology course. Nucleotides are monomers and can join together to form dimers (dinucleotides) and polymers (polynucleotides or nucleic acids). (b) A DNA molecule contains polynucleotide strands. Aug 23, 2024 · Content preview Nucleic acids DNA – deoxyribonucleic acid - Double helix = shape of DNA molecule due to coiling of the two sugar-phosphate backbone strands into a right-handed spiral configuration - Monomer = molecule that when repeated makes a polymer – nucleotides are monomers of nucleic acids - Nucleotide = molecule consisting of five-carbon sugar, a phosphate group and a nitrogenous Nov 26, 2021 · 3. This resource is a comprehensive powerpoint divided into lessons. Nucleotides consist of pentose which is a 5 carbon sugar, a nitrogen containing organic base and a Jun 4, 2019 · [Total: 10] 2 DNA and RNA are nucleic acids. 3 Nucleotides and nucleic acids, from the spec point (d) (ii). Oct 22, 2025 · Made using OCR Biology A specification for the 2. Nucleotides from complimentary strand, mRNA, a copy of DNA leaves the nucleus via a pore in the nuclear envelope into the cytoplasm, attaches to a free/bound ribosome. Cram. The video is catered to the OCR Specification but has been adapted so that it is suitable for all major [Total: 10] 2 DNA and RNA are nucleic acids. What does a nucleotide do? They form monomers of nucleic acids, DNA & RNA, and help regulate many metabolic pathways. OCR Biology A-Level - Nucleic Acids Describe the structure of DNA Click the card to flip it 👆 -polymer made up of lots of repeating monomeric units called nucleotides -two strands which are anti-parallel and run in a double helix shape -long and carry genetic information Nucleotides and nucleic acids: Foundations in Biology: Biology OCR A Level Draw the structure of a nucleotide. The topic is broken down into the individual specification points, shown by the numbers used throughout. pdf), Text File (. Cognito Edu Cognito Edu DNA and RNA are both examples of nucleic acids. Please like, share Nucleotide structure Nucleotides are the building blocks of nucleic acids such as DNA and RNA. Nucleotides and Nucleic Acids (d) i)The structure of DNA; To include how hydrogen bonding between complementary base pairs (A to T Study with Quizlet and memorise flashcards containing terms like What is a nucleic acid?, What is the pentose sugar in DNA called?, What is the pentose sugar in RNA called? and others. com makes it easy to get the grade you want! Mark scheme - Nucleotides and Nucleic Acids- MCQ Flashcards - Topic 2. OCR A-LEVEL BIOLOGY A Learn with flashcards, games, and more — for free. 3 on ‘Nucleotides and nucleic acids’ from the A Level Biology, OCR A. com makes it easy to get the grade you want! OCR A Level Biology 2. This document is a PDF Biology Study Notes. In this video, we will look at the structure of a nucleotide, how this differs in DNA and RNA, and also the two types of nitrogenous bases. . Online Christmas Mock Prep Courses - A Level Biology AQA and OCR (A) Get mock-ready this Christmas with our Mock Preparation Courses. Find information on DNA structure, RNA structure and base pairing. The following are suitable topic areas from the specification that could be used to describe the use of pentose and hexose sugars in biochemical reactions and the formation of other molecules within cells. Jul 9, 2023 · This video covers almost the entire Nucleotides and Nucleic Acids topic for A-Level Biology. Having taught AQA previously, I think most of it is applicable for that exam board as well. 6-1 Nucleic Acids and Nucleotides (Cambridge AS & A Level Biology, 9700) OtterBioTutor 23. Apr 29, 2020 · Module 2. These bonds are covalent bonds known as phosphodiester bonds. Purines - Nitrogenous bases that have a double ring of carbon and nitrogen atoms, such as adenine and guanine. They consist of a strand of nucleotides with a phosphate group, a 5' sugar and a nitrogenous base. The document contains a series of flashcards covering topics related to nucleotides, nucleic acids, DNA, RNA, transcription, and translation. 3. May 2, 2025 · OCR A Level Biology- Nucleic Acids Questions with Correct Answers Which elements do nucleotides contain? - ANSWERSCarbon, hydrogen, nitrogen, oxygen and phosphorous What are the two types of nucleic acid? - ANSWERSDNA and RNA What is a nucleic acid? - ANSWERSA large monomer made up of many nucleotide monomers linked in a chain What are the 3 components of DNA and RNA? - ANSWERS1. 3 Nucleotides and nucleic acids topic . Study with Quizlet and memorise flashcards containing terms like Nucleic Acids, Types of Nucleic Acid:, Nucleotides and others. Study with Quizlet and memorise flashcards containing terms like Nucleotide, Nucleic acid, Deoxyribose Nucleic Acid (DNA) and others. txt) or read online for free. Each nucleotide is made up of three components: Pentose sugar (either deoxyribose or ribose), Nitrogenous base (guanine, cytosine, adenine, thymine or uracil) Phosphate DNA consists of two nucleic acid strands bonded together by complementary base pairing, the strands OCR A Level Biology - Nucleotides and Nucleic Acids 4. What's the structure of DNA? It's made up of nucleotides & consists of 2 polynucleotide strands that are antiparallel There are 4 nitrogenous bases: adenine, guanine, cytosine & thymine. They allow a strong understanding of content to achieve a high grade. Feb 22, 2018 · This is my sequence of lessons for OCR 2. OCR A Level Biology - Nucleotides and Nucleic Acids 4. Multiple Choice Questions (MCQ) topic quiz - answers Which of the following bonds are broken during DNA replication? A Apr 29, 2020 · Every one of the lessons included in this bundle is detailed, engaging and fully-resourced and has been written to cover the content as detailed in module 2. Nucleotides consist of pentose which is a 5 carbon sugar, a nitrogen containing organic base and a phosphate group: This genetic code wheel enables you to work out all combinations of bases that code for each of the 20 amino acids (the amino acids are on the outside of the wheel abbreviated to the first three letters of each one). Nucleic acids are long chains (polymers) made up of lots of nucleotide monomers joined together with phosphodiester bonds. Which of the statements, A to D, will not affect the rate of phosphodiester bond formation? A. free nucleotide availability [1] Study with Quizlet and memorise flashcards containing terms like What type of chemical reaction takes place when 2 nucleotides in a single polynucleotide strand are joined together? (1 mark), Name the chemical released when the bond is formed between the two nucleotides. 3. and others. Jul 23, 2023 · hat have a double ring of carbon and nitrogen atoms, such as adenine and guanine. The formation of phosphodiester bonds will occur in the same direction on each strand during DNA replication. 5. Questions and model answers on Nucleotides & Nucleic Acids for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams. Each strand of DNA acts as a template 5. Jun 6, 2025 · This is a sequence of lessons designed to cover the unit 2. ATP - Adenosine triphosphate; the main energy source that cells use for most of their work Study with Quizlet and memorise flashcards containing terms like What are nucleic acids?, what do nucleic acids contain (structure), what are the two types of nucleic acids and others. Study with Quizlet and memorise flashcards containing terms like What is a nucleotide?, What are nucleotides made of?, Why are nucleotides important? and others. The wide range of activities will maintain engagement whilst supporting the explanations of the content to allow the OCR A Level Biology 2. tRNA bring amino acids to ribosome in correct order and amino acids are joined to peptide bonds to form proteins. Complementary base nucleotides join up to the exposed bases (A-T, C-G) 6. …more OCR Alevel biology Nucleotides and nucleic acids Structure of a nucleotide Click the card to flip it 👆 phosphate group, pentose sugar, nitrogenous base Apr 29, 2020 · Module 2. [2] Mark scheme - Nucleotides and Nucleic Acids ii 28 failed to state the answer to the nearest whole number. Perfect for A-Level students and educators alike. Revision notes for the Nucleotides and Nucleic Acids Topic 2. Both deoxyribonucleic and ribonucleic acid are polymers of nucleotides. Study with Quizlet and memorize flashcards containing terms like Nucleic Acids, Types of Nucleic Acid:, Nucleotides and more. ATP is another type of nucleic acid and hence it is structurally very similar to the nucleotides that make up DNA and RNA It is a phosphorylated nucleotide Adenosine (a nucleoside) can be combined with one, two or three phosphate groups One phosphate group = adenosine monophosphate (AMP) Sep 11, 2024 · Unlock the power of visual learning with our meticulously crafted digital A-Level Biology Nucleotides and Nucleic Acids detailed study notes, designed to elevate your understanding. 3: Nucleotides and nucleic acids (OCR A-level Biology A) Every one of the lessons included in this bundle is detailed, engaging and fully-resourced and has been written to cover the content as detailed in module 2. May 2, 2025 · Content preview OCR A Level Biology - Nucleotides and Nucleic Acids Questions & Answers Nucleotide - ANSWERSMonomer that forms DNA and has a phosphate group, a sugar, and a nitrogen-containing base. 2 (10 reviews) Nucleotide Click the card to flip it 👆 Apr 4, 2020 · RNA will bind to DNA through complementary base-pairing. (1 mark), A DNA molecule contains 2 polynucleotide chains. Our two-day online courses run on 2nd–3rd January, with separate groups for AQA and OCR (A). The proportion of adenine in a nucleic acid will always equal the proportion of guanine. 3 Nucleotides and Nucleic Acids *I have separate sets of each of the topics individually, the 3 papers and will be making one set for the whole A-level too!* Comprehensive revision notes on Nucleic Acids for the A-Level Biology OCR specification. Nucleotides and DNA structure is the first lesson in the topic. OCR (A) Biology A-level 2. Also included is a colou Nucleotide structure Nucleotides are the building blocks of nucleic acids such as DNA and RNA. It is essential to metabolism, which is all the chemical reactions that take place in a cell. 3 Nucleotides and nucleic acids the structure of a nucleotide as the monomer from which nucleic acids are made the synthesis and breakdown of polynucleotides by the formation and breakage of phosphodiester bonds the structure of ADP and ATP as phosphorylated nucleotides (i) the structure of DNA (deoxyribonucleic acid) OCR AS Biology nucleotides and nucleic acids exam questions DNA polymerase catalyses the formation of phosphodiester bonds during DNA replication. pH D. 3 for AS-Level and Year 1 A-Level OCR A Biology. Nucleotide structure Nucleotides are the building blocks of nucleic acids such as DNA and RNA. 2. These notes contain all the specification knowledge required, examples and practical methods for this topic. They may be components of many coenzymes. 3 Nucleotides and Nucleic Acids. Summary RNA is a short, single-stranded nucleic acid RNA nucleotides contain the pentose sugar ribose RNA nucleotides contain the organic bases guanine, adenine, cytosine and uracil …more Nucleic acids are the biomolecules that are essential for every form of life present on the earth. Explain why. Nucleotides and Nucleic acids b) The synthesis and breakdown of polynucleotides by the formation and breakage of a phosphodiester bond. DNA helicase (enzyme) attaches onto DNA strand and breaks the hydrogen bonds between the two DNA strands 3. com. OCR A Level Biology - Module 2, Section 3: Nucleotides and Nucleic acids what are the 3 main components of a nucleotide? A summary of the key facts and essential knowledge that students need for the Nucleotides and Nucleic acids topic Apr 4, 2023 · OCR A Level Biology - Nucleotides and Nucleic Acids Question and answer rated A+ Nucleotide Monomer that forms DNA and has a phosphate group, a sugar, and a nitrogen-containing base. DNA sugar= deoxyribose bases: pyrimidines: thymine and cytosine purines: adenine Jul 14, 2025 · DNA: structure & function Deoxyribonucleic acid (DNA) is a type of nucleic acid and forms a polynucleotide – it is made up of many nucleotides linked together in a chain Nucleic acids DNA is a polynucleotide, this means it is made up of many nucleotides bonded together in a long chain. 3 of the OCR A-level Biology A specification. (i) Individual nucleotides are joined together to make a polynucleotide strand. 1, list the three triplet codons that would cause termination of a polypeptide chain (stop codons) and explain why these codons have this effect. Study with Quizlet and memorise flashcards containing terms like What makes up a nucleotide?, Which elements do nucleotides contain?, What is DNA and RNA made up of? and others. The word document contains 4 pages of revision notes. temperature B. ATP is another type of nucleic acid and hence it is structurally very similar to the nucleotides that make up DNA and RNA It is a phosphorylated nucleotide Adenosine (a nucleoside) can be combined with one, two or three phosphate groups One phosphate group = adenosine monophosphate (AMP) ATP is another type of nucleic acid and hence it is structurally very similar to the nucleotides that make up DNA and RNA It is a phosphorylated nucleotide Adenosine (a nucleoside) can be combined with one, two or three phosphate groups One phosphate group = adenosine monophosphate (AMP) Jun 6, 2025 · This lesson resource is from the OCR A - A Level Biology specification, from the topic 2. (a) The table below contains a number of statements relating to nucleic acids. [2] (d) Using the information in Fig. Also included is a colou The table below contains a number of statements relating to nucleic acids. OCR A, A Level Biology - Foundations in Biology, Nucleotides and Nucleic Acids Learn with flashcards, games and more — for free. Complete the table, using a letter D, R or B, to show whether each statement applies to: DNA only (D) Jan 4, 2020 · RNA will bind to DNA through complementarybase-pairing. DNA polymerase joins the nucleotides on the new strand together by reforming the phosphodiester bond Dec 26, 2024 · Revision notes on Phosphorylated Nucleotides for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams. Students studying International A Level Biology will need to check their specification. ATP, or Adenosine Triphosphate, is an immediate source of energy for biological processes. DNA starts to unzip 4. Describe how these two chains are held together. It's very similar to DNA (ii) On Fig. Study with Quizlet and memorise flashcards containing terms like Which elements do nucleotides contain?, What are the two types of nucleic acid?, What is a nucleic acid? and others. Understand the structure of nucleotides, the role of DNA and RNA in carrying genetic information, and the composition of nucleotides in DNA and RNA. Dec 26, 2024 · Revision notes on DNA: Structure for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams. Culture TV: / @scaleofc1966 All questions and appropriate comments are Nucleotides and Nucleic Acids ATP ATP contains three phosphate ions that play a significant role in energy transfer. Taught by experienced teachers, each course combines targeted revision and exam technique practice to help students consolidate their knowledge and approach January In this video I look at the different nucleotides and how to distinguish them and the necessary steps to purify DNA into a precipitate. A pentose sugar (a sugar with 5 carbon atoms) 2. Made using OCR Biology A specification for the 2. A nitrogen-containing organic base 3. Phosphoryl Jan 28, 2022 · OCR A Level Biology 2. The bonds are broken by hydrolysis. Teacher 7 terms A_Level_Teacher Preview OCR AS Biology nucleotides and nucleic acids exam questions 90 terms cloistered Preview Transcription is the first step of protein synthesis, where the gene (DNA) is used to make mRNA which travels to the ribosome for the actual protein synthesis step. Study with Quizlet and memorise flashcards containing terms like What is a nucleotide?, What are the 4 bases?, Structure of DNA and others. Study Flashcards On OCR A level Biology. There are Nucleotides contain: pentose sugar, phosphate group and nitrogenous base Nucleotides are linked by condensation reaction to produce phosphodiester bonds. 8 by the OCR specification, and looks at the structures of the nucleic acids DNA and RNA. What type of chemical reaction takes place when two nucleotides in a single polynucleotide strand are joined together? (ii) [2] [2] [1] Study with Quizlet and memorise flashcards containing terms like What is a nucleotide?, What are the 4 bases?, Structure of DNA and others. Dec 26, 2024 · Revision notes on Nucleotides & Phosphodiester Bonds for the OCR A Level Biology syllabus, written by the Biology experts at Save My Exams. Study with Quizlet and memorise flashcards containing terms like Name the pentose sugars in DNA & RNA. Gizmo uses AI to make learning easy. In order to fully address the question and reach the highest mark bands students must also include at least five topics in their answer, to demonstrate a synoptic approach to the essay Module 2: 2. Quickly memorize the terms, phrases and much more. , (a) How is a purine different from a pyrimidine? and others. 3 Nucleotides and nucleic acids Biology B (Advancing Biology) 2. What is the minimum number of DNA bases required to code for the amino acids in this polypeptide?, The gene for this polypeptide contains more than this number of bases. Complete the table, using a letter D, R or B, to show whether each statement applies to: Aug 6, 2024 · In depth revision notes covering the whole of nucleotides and nucleic acids. I have made my own animations for semi conservative replication, transcription and translation using morph transitions. DNA - ANSWERSA complex molecule containing the genetic information that makes up the chromosomes. The study notes explore the structure of DNA, RNA and nucleotides and also give a detailed explanation on DNA replication, transcription and translation. Learn about nucleotides and nucleic acids in Biology A-level with this quiz focused on Topic 2. Apr 2, 2020 · Both DNA and RNA carry information, for instance DNA holds genetic information whereas RNA then transfers this genetic information from DNA to ribosomes made of RNA and proteins. What is the evidence from the diagram that DNA is a polymer?, A polypeptide has 51 amino acids in its primary structure. It provides definitions, descriptions, and explanations of key terms such as the structures of The questions in this quiz cover topics mainly from specification sections: Biology A 2. Start learning these flashcards about OCR A Level Biology - Nucleotides and Nucleic Acids Biology, A-level, OCR Study with Quizlet and memorise flashcards containing terms like DNA is a polymer. 4 Nucleic acids. 2 (10 reviews) Nucleotide Click the card to flip it 👆 OCR Biology A-Level - Nucleic Acids Describe the structure of DNA Click the card to flip it 👆 -polymer made up of lots of repeating monomeric units called nucleotides -two strands which are anti-parallel and run in a double helix shape -long and carry genetic information Jul 23, 2023 · RNA - A single-stranded nucleic acid that passes along genetic messages. It works with the DNA extract laminate, where students annotate the DNA extract to apply their knowledge as they move through the lesson. 1 Nucleotides and nucleic acids (a) the structure of a nucleotide as the monomer from which nucleic acids are made Nucleotides: 1. The distance between the strands in the double helix will always be the same. Pyrimidines - Nitrogenous bases that have a single ring of carbon and nitrogen atoms, such as cytosine and thymine ADP - Adenosine diphosphate; a molecule that ATP becomes when it gives up one of its three phosphate groups. Study with Quizlet and memorise flashcards containing terms like (a) What is the structure of a nucleotide?, (a) Name 2 ways in which RNA nucleotides are different to DNA nucleotides. May 12, 2022 · contains information about which amino acids are needed for the protein forms proteins primary structure and is necessary for mRNA translation catalyses reactions biochemically and keeps protein synthesis sequence structurally stable catalyses phosphodiester bond formation between nucleotides The enzyme that links new nucleotides together to form a new strand, using the pre-existing strand as a template. OCR A Level Biology 2. The carbon 5 on one sugar covalent bonds with the OH on the carbon 3 of another. Complete the table, using a letter D, R or B, to show whether each statement applies to: DNA only (D) Jan 4, 2020 · [2] (c) Identify the type of nucleic acid that holds the sequence of bases shown in Fig. Study with Quizlet and memorize flashcards containing terms like Nucleotide, DNA, RNA and more. Comprehensive exam-style multiple choice questions on Nucleic Acids & DNA Replication for the A-Level Biology OCR specification. Click for even more facts and information on these acids. length of DNA molecule C. OCR A A-Level Biology: 2. This creates a sugar-phosphate back bone. The most concise & comprehensive OCR A-level Biology notes you will find. In this A-level / IB Biology Revision Guide, you will find high quality Structures of Nucleotides A-level Revision Notes and Past Paper Questions Jan 4, 2020 · What % of the bases were guanine? Show your working. Learn about DNA replication, the genetic code, and protein synthesis. (4 marks) and Study with Quizlet and memorize flashcards containing terms like Nucleotide, Nucleic Acid, Three components of a nucleotide and more. 1. 3 Nucleotides and Nucleic acids (d) ii) Practical investigation into the purification of DNA by precipitation #OCRALevelBiology #AQAA Study with Quizlet and memorise flashcards containing terms like What is DNA made of?, What is the structure of nucleotides?, What elements make up nucleotides? and others. Each DNA polynucleotide strand is made up of alternating deoxyribose sugars and phosphate groups bonded together to form the sugar-phosphate backbone. This enzyme forms phosphodiester bonds in the DNA strand. Nucleotides and Nucleic acids a) The structure of a nucleotide as the monomer from which nucleic acids are made; To include the difference between DNA and RNA Nucleotides from complimentary strand, mRNA, a copy of DNA leaves the nucleus via a pore in the nuclear envelope into the cytoplasm, attaches to a free/bound ribosome. The lessons are designed to be tau Study with Quizlet and memorize flashcards containing terms like Nucleotide structure, Importance of nucleotides, DNA nucleotide and more. Our notes are compiled by top designers, academic writers and illustrators to ensure they are the highest quality so your learning is made simple. RNA - ANSWERSA single-stranded nucleic acid that passes along genetic messages. It covers the structure This video is aimed at the UK A Level Biology specifications. Study with Quizlet and memorise flashcards containing terms like What is DNA made of?, What is the structure of nucleotides?, What elements make up nucleotides? and others. 3 Nucleic Acids. Aug 23, 2024 · Content preview Nucleic acids DNA – deoxyribonucleic acid - Double helix = shape of DNA molecule due to coiling of the two sugar-phosphate backbone strands into a right-handed spiral configuration - Monomer = molecule that when repeated makes a polymer – nucleotides are monomers of nucleic acids - Nucleotide = molecule consisting of five-carbon sugar, a phosphate group and a nitrogenous Describe how the structure of RNA differs from that of DNA. , How are nucleotides joined together?/ how to make a polynucleotide, How are polynucleotides broken? and others. 1, draw a section of the mRNA strand that is complementary to the section of the DNA strand shown. Curriculum Content 2. 4K subscribers Subscribe OCR A-LEVEL BIOLOGY A Learn with flashcards, games and more — for free. 3 Nucleotides and Nucleic Acids PDF Notes. 3 Nucleotides and Nucleic Acids - OCR (a) Biology a-level - Free download as PDF File (. at Cram. Gizmo's AI turns any learning material into flashcards and then quizzes you on them in a gamified way using spaced repetition and active recall. ATP is another type of nucleic acid and hence it is structurally very similar to the nucleotides that make up DNA and RNA It is a phosphorylated nucleotide Adenosine (a nucleoside) can be combined with one, two or three phosphate groups One phosphate group = adenosine monophosphate (AMP) Nov 26, 2021 · 3. 1. Nucleic Acids & Replication Deoxyribonucleic acid is the genetic material that contains all the instructions an organism needs to survive, develop and reproduce. 5 - Nucleic Acids Structure and Replication Can you Draw the formation and hydrolysis of a phosphodiester bond Name the parts of a nucleotide Explain the similarities and differences between RNA and DNA Explain why DNA is a good molecule for storing information ? Can you describe semi-conservative replication ? Nucleic acids is section 2. ATP is another type of nucleic acid and hence it is structurally very similar to the nucleotides that make up DNA and RNA It is a phosphorylated nucleotide Adenosine (a nucleoside) can be combined with one, two or three phosphate groups One phosphate group = adenosine monophosphate (AMP) Jan 4, 2020 · What type of chemical reaction takes place when two nucleotides in a single polynucleotide strand are joined together? condensation reaction [1] Name the chemical released when the bond is formed between the two nucleotides. It covers the structure Study Flashcards On OCR A level Biology. Nucleotides and Nucleic Acids (e) Semi- conservative DNA replication; To include the roles of the enzymes helicase and DNA polymerase, the importance of replication in This video is aimed at the UK A Level Biology specifications. Strand of DNA ready for replication 2. This lesson is a guided practical on DNA purification, including a method sheet with summary questions. 2. pfqc siqy mkt wjpqblb ultjc dflitfd piywc ypsn qyukjw zznp pdjyr tuxm bjcgaaz taq bgeqzcxu