NUCLEIC ACIDS I.BASIC CONCEPTS II.CLASSES III.CHEMICAL NATURE IV.FUNCTION I.BASIC CONCEPTS NUCLEIC ACIDS polymeric macromolecules‚ or large biological molecules‚ essential for all known forms of life are made from monomers known as nucleotides Each nucleotide has three components: a 5-carbon sugar‚ a phosphate group‚ and a nitrogenous base If the sugar is deoxyribose‚ the polymer is DNA. If the sugar is ribose‚ the polymer is RNA. Together with proteins‚ nucleic acids are the most
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GIVEN: TO DESIGN A 1000TPD CAPACITY H2SO4 ACID PLANT BASIS: 1 HOUR OF OPERATION. PURITY: PRODUCT WHICH IS TO BE MANUFACTURED IS ASSUMED TO HAVE STRENGTH OF 98% ACID. 1000TPD implies that we have Acid 1000 x 10 / 24 = 41666.67 Kg/Hr of 3 With 98% purity‚ the acid that is produced per hour = (98 x 41666.67) / 100 = 40833.34 Kg/Hr Kmoles of Sulfuric acid to be produced = 40833.34 / 98 = 416.667 Kmoles/Hr It’s assumed that overall absorption of the acid is 100 % = 416.667 / 1.0 Then‚ SO3 required
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on biological thinking as the discovery of base-pairing in nucleic acids. These complementariness principles do not only underlie current ideas on the structure of the nucleic acids‚ but they form the foundation of all speculations‚ more or less well- founded‚ on their physical properties (denaturation‚ hypochromic- ity‚ etc.)‚ on the transfer of biological information from deoxy- ribonucleic acid to ribonucleic acid‚ and on the role of the latter in directing the synthesis of specific
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Introduction: Acid rain has proven to be a big problem for Connecticut. It has had a great impact on builders‚ wildlife‚ and the water sources. Acid rain has many components in it such as pollutants from plants to sulfuric acid from burning coal. Problem: Which stone is the most resistant against acid rain? Hypothesis: If we test the different stones against acid rain then red sand stone would be the best because it is heavier and cannot be easily broken. Independent variable: Type of stones
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Allison is a 2nd year Midwifery student. Whilst on her clinical placement on an Antenatal and Postnatal ward‚ has been observed by her Mentor and associate Mentor‚ to fail in her actions to show competence in her practice whilst caring for the women. The key areas identified by her Mentor are: failing to explain her actions to a women in her care who has more complex needs‚ failed to gain verbal consent and failed to maintain privacy or dignity. Her associate Mentor has been concerned on shift
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Quick study guide 20 Examination strategies Before the exam: Focus on revision‚ not re-learning • Listen for verbal clues offered in lectures and tutorials. • Use the Unit Guide to create an overview of themes and topics. • Prepare a pre-examination study timetable. Share your time between subjects‚ according to available marks. • Identify problem areas and work on these first. • Aim for understanding‚ not just memorising the material. • Study actively—verbalise and visualise your
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1/ What is your mom like ? ( My mom‚she’s tall and look very beautiful with her big black eyes and short hair. She’s the one who gave birth to me and I know she unconditionally loves me‚loves our family She’s caring‚open‚honest and very understanding She always works hard to give me everything I deserve She knows what is the best for me and always listens to my problems She takes care of her family well and I love every dishes she cooks My mom‚in other words‚she means everything to me and
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BENZOIC ACID & BENZOATES (210 –218) • Retards growth of bacteria and yeasts • Occurs naturally in many foods – a similar distribution to salicylate (but at a lower dose than as an additive) • Common food sources: Soft drink‚ cordial‚ fruit juice and cider Liquid essences and syrups Iceblocks‚ jelly‚ low joule jam‚ dips‚ pickles‚ olives Fish marinades and preserves • PABA (para-amino-benzoic-acid)
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Task A – Individual presentation Given the situation‚ you now have: · 2 minutes to prepare your responses · 2 minutes to present Tips: · Study the scenario or topic given carefully · Double check which candidate you are (A‚ B‚ C‚ D) to make sure you don’t prepare another candidate’s speech · Make sure you don’t run out of topic · Prepare 2 to 3 points to present on · You MUST agree with the point that is given to you (you can disagree or favor another point in Task B) · Make full use of
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A carboxylic acid is an organic acid characterized by the presence of at least one carboxyl group. The general formula of a carboxylic acid is R-COOH‚ where R is some monovalent functional group. A carboxyl group (or carboxy) is a functional group consisting of a carbonyl (RR’C=O) and a hydroxyl (R-O-H)‚ which has the formula -C(=O)OH‚ usually written as -COOH or -CO2H. Carboxylic acids are Brønsted-Lowry acids because they are proton (H+) donors. They are the most common type of organic acid. Among
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