(3 marks), b) Describe how a mutagen might cause the changes in the 2nd stage and what consequences this could have for the organism. What are some potential concerns that may arise? Exam Prep Package at ₹2999 Only × Contact Us. • Attempt Questions 1–20 • Allow about 35 minutes for this part Part B – 55 marks • Attempt Questions 21–33 • Allow about 1 hour and 40 minutes for this part Section II Pages 27–38 25 marks • Attempt ONE question from Questions 34–38 • Allow about 45 minutes for this section 2020 . Read the 8 Common Mistakes Chemistry Students Make in the HSC Exam. Common Ion Effect . The topic of Genetic Change is new to the HSC Biology syllabus and may feel like uncharted territory to some students, but that’s why it’s important you consolidate your knowledge with some practice questions! Common ion effect question. Return to Equilibrium Menu. Adding a common ion prevents the weak acid or weak base from ionizing as much as it would without the added common ion. (5 marks). A 0.10 M NaCl solution therefore contains 0.10 moles of the Cl-ion per liter of solution. Learn the errors HSC students are making and avoid them. (4 marks). > x��]Ys��~ǯ��\�����2N�U����[~�I�7"�D�V����13�ƙC� �JIfp[��_7z>���\�N��(���7���{+;��S�7�w~������������������ ��{�:�������+.��t��� ��o�K�����������Cγ���TmҺ��7U��fj�P������v_����ƶ/u�y�[�y=�}�R ���*��e�gt����s�YeȬ�ř�Gy�y�ٓd�O Ceѩ�c�'�9�K��:�0-�m��m5ͼ�mUo�����`��i\�\��Pf�m:u�ք=B"/��kŽH�r�����0b�0j���ZӐ5š^n����m��5�C��D�ڮ�m�P�Zj�qr���i)�ﱥF���� Explain how a range of mutagens operate, including but not limited to:  – electromagnetic radiation sources. (4 marks), Source: Adapted from Biology 2019 additional sample HSC questions, Compare the causes, processes and effects of different types of mutation, including but not limited to:   – point mutation). The common-ion effect can be understood by considering the following question: What happens to the solubility of AgCl when we dissolve this salt in a solution that is already 0.10 M NaCl? Hello, After reading the solution to the question, my first question is a) How is molarity of 0.033 M of 2.5 mmol of \(NH_4^+\) ions and 2.5 mmol of \(NH_3\) molecules computed? This is a great demo to illustrate the common ion effect in … %PDF-1.3 Look no further! Buffering effect. What minimum OH¯ concentration must be attained (for example, by adding NaOH) to decrease the Mg 2+ concentration in a solution of Mg(NO 3) 2 to less than 1.1 x 10¯ 10 M? (4 marks). For Study plan details. Common Ion Effect with Weak Acids and Bases Adding a common ion prevents the weak acid or weak base from ionizing as much as it would without the added common ion. Don't make these 8 common mistakes in your HSC or HSC Trial exams. Post by Dhamnekar Winod » Fri Dec 04, 2020 5:40 pm. 1 decade ago. (3 marks), Compare the causes, processes and effects of different types of mutation, including but not limited to: – point mutation – chromosomal mutation, In society, there are ideological dilemmas regarding the use of DNA technology. What is common ion effect. Since the mid to late 20th century, the development of genetic technology was centered around benefiting mankind. This resulted in a range of beneficial drugs, vaccines and food crops which were engineered using genetic technology. We know how tricky it is to find practice questions on new concepts such as K sp that were not in the previous syllabus.. Introduction to solubility and solubility product constant. the calcium ion concentration and so reduce the hardness. (6 marks), Source: Biology 2019 additional sample HSC questions. $\endgroup$ – Questions Jan 31 at 15:13 The common ion effect suppresses the ionization of a weak acid by adding more of … Solubility and complex ion formation. 2 0 obj The bread mould, Neurospora crassa, normally produces its own amino acids from raw materials through a system of enzymes. Identify and describe an early form of biotechnology and how it might have shaped our use of biotechnology today. Introns and exons are respectively the non-coding and the coding nucleotide sequences within a gene. Step 1: List the known quantities and plan the problem . Addition of more like conjugate ions will ultimately shift the pH of the solution. The flow diagram illustrates the effect of a point mutation on an organism’s genetic sequence. Art of Smart We can help you master the HSC Biology syllabus and ace your upcoming HSC Biology assessments with personalised lessons conducted one-on-one in your home or at our state of the art campus in Hornsby! This phenomenon is called "the common-ion effect". Share; Facebook. Does artificial manipulation of DNA have the potential to change populations forever? What happens if a second compound is added that has no common ions? In the table below, compare the differences in effect between point mutations and chromosomal mutations. Common Ion Effect. (7.5 Pts.) The common ion effect also plays a role in the regulation of buffers. 0 0. Buffering solutions contain either an acid or base, accompanied by its conjugate counterpart. Evaluating the potential benefits for society of research using genetic technologies. Searching for some practice questions on HSC Chemistry Module 5: Equilibrium and Acid Reactions? 1800-212-7858 / 9372462318. Dot structures. Curriculum Notes . (1 mark), Compare the processes and outcomes of reproductive technologies, including but not limited to:  – artificial insemination – artificial pollination, A recombinant DNA molecule is created using: (1 mark), c) 2 or more DNA fragments from different organisms, Describe techniques and applications used in recombinant DNA technology, Using a flowchart, or other diagrammatic methods, show the sequence of events which results in the formation of recombinant DNA. Solubility from the solubility product constant. consider saturated NaCl so NaCl(s) Na + Cl but NaCl(s) does not participate in teh equilibrium, so the LHS is empty O.o hmmm I guess its possible, but it just doesnt seem right in a chem reaction to have one whole side as void. molar mass CdC2O4 = 230.5 g/mol. �}=�hy#h=��ZK1���?H- ��5t[+��"5DR���&�������cR��)jЁ�C ����� C3İJ=� ��ɘi�x�zYB�[�ۀ����5+���Θ�fj�Hv.�|�˄�yu�8�!v��h&o�wo�p�!Z�N�� �(u*&Y����[��v�|�܄λhct,�?�7w�o>}y����>���Sq���d�Q���_n$���������3�w���}W��P���Y7�I[6t�. a) Explain, using a specific species of animal, what is meant by the term, and on average our students score mark improvements of over, HSC Biology 2019 additional sample HSC questions, NAPLAN Practice Tests for Years 3, 5, 7 and 9, How to Write an English Essay in Years 9 and 10, How to Write a Band 6 HSC Creative Writing Story, How To Complete A Close Study of a Novel in 5 Easy Steps, The Ultimate Guide to Prescribed Texts in the HSC Common Module [2020]. Outline the stages of recombinant DNA technology. How we can increase or decrease the solubility of a compound by adding other materials. Interestingly enough, the original compound will often become more soluble (the Uncommon Ion Effect… (Sourced from HSC Biology 2019 additional sample HSC questions) Evaluate the effect of mutation, gene flow and genetic drift on the gene pool of populations. Evaluate the effect of mutation, gene flow and genetic drift on the gene pool of populations. Researching future directions of the use of biotechnology. Multiple Choice. Common Ion Effect ,Equilibrium - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 11-science on TopperLearning. (3 marks), b) By the same logic, what would you expect to happen to the translated DNA sequence if an exon was modified by a mutagen. The addition of a solution containing sulfate ion, such as potassium sulfate, would result in the same common ion effect. Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 4 Comments. Be careful to only give the type of response requested in the question. Twitter. Anonymous. Alex graduated in 2018 and was listed on the Distinguished Achievers list for Advanced English, Extension 1 English and Biology. a) List the sequence of events from stages 2 to 4 that result in the formation of the faulty protein. If to an ionic equilibrium, AB A + + B‾ , a salt containing a common ion is added, the equilibrium shifts in the backward direction. Solubility and the common-ion effect. The Common Ion Effect Problems 1 - 10. (4 marks), Selective breeding is a form of biotechnology, a) Explain, using a specific species of animal, what is meant by the term selective breeding. Consider The Following Solubility Equilibrium And Select The Answer That Describes What Will Happen When HCl Is Added A Solution Containing Cu(OH)2. enetic Change explores the ways in which new genotypes can be introduced into the population, including mutation, environmental pressures and induced with biotechnology. If a mutation occurred in gene B, the bread mould would still produce arginine if supplied with: (1 mark), (Sourced from HSC Biology 2019 additional sample HSC questions), Evaluate the effect of mutation, gene flow and genetic drift on the gene pool of populations, Ionizing radiation is a high-energy form of radiation which can cause ions or free radicals to form. Ask questions, doubts, problems and we will help you. Google+. I dont get it why don't solids affect equilibria? stream Cu(OH)2s) Cu*2(aq) + 20H (aq) A) Decrease The Solubility Of Cu(OH)2 B) Increase The Solubility Of Cu(OH)2. (5 marks), Describe some of the uses of biotechnology in the agricultural industry. 20 HSC Biology Module 6: Genetic Change Practice Questions. common-ion effect, decrease in solubility of an ionic salt, i.e., one that dissociates in solution into its ions, caused by the presence in solution of another solute that contains one of the same ions as the salt. Assess the significance of ‘coding’ and ‘non-coding’ DNA segments in the process of mutation. Alex has a great interest in the field of Biology, avidly blogging about the topic whilst also aspiring to become a Biomedical Engineer. Radiation is a product of this equilibrium OH ) 2 is 1.2 x 10¯ 11 dissociate into their when! The effect on biodiversity of using biotechnology in agriculture 2 s is suppressed in presence. Their drawbacks and potential benefits for society of research using genetic technology it can be used 4.. 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