Rna, on the other hand, contains a ribose sugar and is more reactive than dna. Besides its chemical composition, rna has important similarities and di. Dna replication, mutation, repair m 211a molecular genetics 1st semester, 2009 nabil bashir dna replication, mutation, repair. Choose from 50 different sets of vocabulary list 3 ib biology dna replication objectives flashcards on quizlet. The difference between the sugars is the presence of the hydroxyl group on the. Dna uses deoxyribose, which lacks a hydroxyl oh group on the 2 carbon. I give many of my ib biology resources away, for the benefit of students and teachers around the world.
U uracil is found only in rna and t thymine is found only in dna. Dna replication exam shs ib biology hl course website. Dna is a double helix made of two antiparallel strands of nucleotides linked by hydrogen bonding between complementary base pairs. These questions have appeared on recent ib examinations, exactly as shown below. Dna and protein synthesis life is a three letter word. Dna replication and rna transcription and translation video. The human genome project which has decoded the case sequence for the whole 6 feet of the human genome requires a data warehouse pictured to store the information electronically. The question specifies that this is dna replication. Unlike dna it does not form a double helix shape, but it does contain a series of nitrogenous bases adenine, uracil, guanine and cytosine. The nucleic acids dna and rna are polymers of nucleotides. Dna is a double helix molecule made of two antiparallel strands of nucleotides linked by hydrogen bonding between complementary base pairs. Dna vs rna introduction and differences between dna and rna.
It involves the unwinding of the double helix and the formation of mrna complementary to the dna strand by rna polymerase. Differences between rna and dna flashcards in a level. Distinguish between unique and highly repetitive sequences in nuclear dna. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Please like and share and click on a advert to help with the hosting costs. Know how an operon works, study the lac operon in the book as an example. Although dna and rna both carry genetic information, there are quite a few differences between them. Rna uses ribose, in which this hydroxyl group is present on the 2 carbon. Following each question is the markscheme answer which was used to evaluate student answers on the examination paper. Overview of the central dogma of molecular biology. U3 dna is a double helix made of two antiparallel strands of nucleotides linked by hydrogen bonding between complementary base. Join a live hosted trivia game for your favorite pub trivia experience done virtually.
This book provides questions and answers for each dot point in the ib biology core syllabus from the. Dna and rna are both polymers of nucleotides, however differ in a few key structural aspects. Dna transcription uses complementary base pairing of adenine, thymine, cytosine and guanine on the dna to uracil, adenine, guanine and cytosine on the. Aug 30, 2018 the phosphate, sugar and base are linked by covalent bonds in dna and rna each nucleotide is linked to the next nucleotide between the phosphate of one and the pentose sugar of the other nucleotide difference between rna and dna rna dna sugar is ribose carbon 2 has an oh attached sugar is deoxyribose carbon 2 no oxygen attached. In dna, a adenine pairs with t thymine and g guanine pairs with c cytosine so the complementary strand will have a where the original has t, g where the original has c, c where the original has g and t where the original has a. Biology notes form 4 pdf biology form 4 questions and. Biology for the ib diploma second edition by cambridge. Remember that the sugar for dna is deoxyribose, and that for rna is ribose. When a polynucleotide is formed, what type of bond is formed between one phosphate group and a pentose sugar one pentose sugar and two phosphate groups. Explain the process of translation, leading to polypeptide formation. Differences between rna and dna flashcards in a level and. Dna differs from rna in the number of strands present, the base composition and the type of pentose. Dna is usually double stranded, except certain viruses where dna is single stranded e.
There is no proportionality in between the number of purine and pyrimidine bases. Messenger rna mrna is copied from the dna, is exported from the nucleus to the cytoplasm, and contains information for the construction of proteins. Nucleic acids deoxyribonucleic acid ribonucleic acid dna rna ib xavier daniel. There are three key differences between a dna and an rna molecule. The base present in dna are adenine a, guanine g,thymine t and.
Biology notes form 1 pdf biology form 1 questions and. Rna structure is a single strand composed of nucleotides. Home a level and ib study tools biology dna and rna. U1 the nucleic acids dna and rna are polymers of nucleotides. Usually the presentations which cannot be downloaded are in pptx format, but in a shared dropbox folder for donors to charity via. Videos, powerpoints, animation and notes for understanding protein synthesis in a level biology. Arabidopsis is a small flowering plant in the mustard family brassicaceae that is widely. Learn molecular biology dna rna with free interactive flashcards. They are both linear polymers, consisting of sugars, phosphates and bases, but there are some key differences which separate the two 1. Dna is a double helix made of two antiparallel strands of nucleotides linked by hydrogen.
Most of the dna of a human cell is contained in the nucleus. As of 2010, 30 scientists have been awarded nobel prizes for experimental work that includes studies of rna. U3 dna is a double helix made of two antiparallel strands of nucleotides linked by hydrogen bonding between complementary base pairs. There is no proportionality in between numbers of purine and pyrimidine bases. Dna and rna biology for majors i simple book production. This is a comparison of the differences between dna versus rna, including a quick summary and a detailed table of the differences. Ribosomal rna rrna is a part of the ribosmes at the site of protein synthesis, whereas transfer rna trna carries the amino acid to the site of protein synthesis. Rna can temporarily form hydrogen bonds between bases of two strands. Translation is the process through which proteins are synthesized. Dna transcription uses complementary base pairing of adenine, thymine, cytosine and guanine on the dna to uracil, adenine, guanine and cytosine on the nrna respectively.
First, like dna, rna has four and only four nucleotides. However, since that book was published in 2005 which is basically the stone. This article will update you about the difference between dna and rna. U2 dna differs from rna in the number of strands present, the base composition and the type of pentose. Differences between dna and rna dna vs rna biology. Therefore, dna is a better genetic material than rna. Numerous key discoveries in biology have emerged from studies of rna ribonucleic acid, including seminal work in the fields of biochemistry, genetics, microbiology, molecular biology, molecular evolution and structural biology. Rna usually is a singlestrand helix consisting of shorter chains of nucleotides. Identify and label carbons by number for example, c1, c2, c3 on a nucleotide drawing. If a virtual private party is more your thing, go here for details. Answers must be written within the answer boxes provided. The discoveries of dna and rna have been a significant milestone in human history, but there are a lot more to learn about them because they are highly technical in nature. Differences between dna and rna dna vs rna biology 4 u. O in dna and rna the adjacent nucleotides are connected by 35 phosphodiester bonds.
Dna stands for deoxyribonucleic acid, while rna is ribonucleic acid. Interference rna irna interferes with the dna message 4. Nov 14, 2018 videos, powerpoints, animation and notes for understanding protein synthesis in a level biology. Clearly, the structures of dna and rna are richer and more intricate than was at first. Prokaryotic vs eukaryotic chromosomes easy biology class. The nitrogenous bases adenine, guanine, and cytosine in dna and rna are the same. Prokaryotic chromosome vs eukaryotic chromosome similarities and differences between the chromosomes of prokaryotes and eukaryotes prokaryotes and eukaryotes are the two major domains of living organisms. Purine and pyrimidine bases are in equal in number. Depending on the type, rna contains 7012,000 nucleotides. This book provides questions and answers for each dot point in the ib biology core syllabus from the international baccalaureate diploma programme for biology. Rna amount varies from cell to cell and within a cell according to metabolic activity dna amount is constant for all cells of a species except gametes and spores 8 of 11.
Intramolecular hydrogen bond interactions are formed between bases of the same single. The pentose sugar in dna is deoxyribose and in rna it is ribose. If this book 1the terms 5 and 3 refer to the position of carbon atoms that link a nucleotide to the dna backbone. The double strandedness of dna makes possible both dna replication and dna repair, because the template strand always contains the information for the synthesis of a complementary strand. Usually you shouldnt use a book to study rna biology but if you really wanted one, the typical one gathering dust on everyones bookshelf is the rna world, third edition. Select the best answer for each question or statement 3 points each, 30 points total 1. The bases present in rna are adenine, guanine, cytosine and uracil. Distinguish between continuous and discontinuous variations describe continuous and discontinuous variations observe variations in plants and animals describe the structure, nature and properties of chromosomes describe the structure, nature and properties of dna molecule differentiate between dna and rna distinguish between f1 and f2 generation. The most obvious difference is that in the dna replication, the new dna string elongated. Cell biology molecular biology genetics ecology evolution and biodiversity human physiology format of the book the book has been formatted in the following way.
Hi wendy most of the ppts that are downloadable as pdfs come through because they were made in smart notebook and converted. It has the broadest helical diameter amongst all dna forms 23a 0 dna which is a typical helix that is right. All we know right now is that dna and rna make up every living organism similar, but at the same time, they also make us unique from each other. M 184biolop2ntz 2xx 20ep03 3 turn over section a answer all questions. Dna differs from rna in the number of strands present, the base composition and. Deoxyribonucleic acid dna and ribonucleic acid rna are perhaps the most important molecules in cell biology, responsible for the storage and reading of genetic information that underpins all life. Understanding differences between dna and rna ap biology. The genetic code is the codons within dna and rna, composed of triplets of bases which eventually lead to protein synthesis. The nucleic acids dna, d eoxyribonucleic acid, and rna, ribonucleic acid are polymers of nucleotides. Choose from 500 different sets of molecular biology dna rna flashcards on quizlet. The nucleic acids dna, deoxyribonucleic acid, and rna, ribonucleic acid are polymers of nucleotides.
The structure of dna allows efficient storage of genetic information. Dna and rna are similar yet different in just the right way to perform their. Play sporcle s virtual live trivia to have fun, connect with people, and get your trivia on. Base pairing might occur between bases along the single strand giving rise to various three dimensional folds. Specific discoveries of high biological significance are. This classification is on the basis of the features of their cellular features primarily the nature of membrane bounded organelles and organization of the genetic materials. Another key difference between dna and rna is the sugar component of the nucleic acid backbone. Usually the presentations which cannot be downloaded are in pptx format, but in a shared dropbox folder for donors to charity via biology4good see about biology4good. Difference between dna and rna table easy biology class. What are the similarities between dna and rna albert.
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