Biology 2015 E.C - 2023 G.C 2014 E.C - 2022 G.C Chemistry 2015 E.C - 2023 G.C Civics and Ethical Education 2015 E.C - 2023 G.C English 2015 E.C - 2023 G.C Geography 2015 E.C - 2023 G.C History 2015 E.C - 2023 G.C Physics 2015 E.C - 2023 G.C Biology - Grade 12 -2022 G.C Grade 12 students can now access their exam results by visiting the Educational Assessment and Examination Services (EAES) website. Previous12345678910111213141516171819Next 41. When three fatty acid molecules and a glycerol molecule undergo condensation reaction, they form peptide bond and protein. ester bond and triglyceride. glycosidic bond and polysaccharide. phosphate bond and phospholipid. 42. In water, phospholipids become organized into a bilayer. In this configuration, which part of the bilayer faces towards the water? Hydrocarbon tail Fatty acid tail Phosphate head Glycerol head 43. Four students wanted to conduct chemical tests on unknown food particles and used the following chemicals and materials.Student A: Test tubes and biuret solutionStudent B: Test tubes, ethanol, water, filter paperStudent C: Test tubes, benedict's solution, water bathStudent D: Test tubes and iodine solutionWhich of the above students planed a test for lipids? Student B Student D Student C Student A 44. Niacin is used to make the coenzyme FAD. ADP. NAD. AMP. 45. The following are reaction types catalyzed by different classes of enzymes.Transfering hydrogen and oxygen atomsChanging of the molecular form of the substrateJoining of two molecules by the formation of new bondsWhich classes of enzymes catalyze the above reactions according to their consecutive order? Transferases, hydrolases, lyases Oxidoreductases, isomerases, ligases Oxidoreductases, hydrolases, lyases Transferases, isomerases, ligases Previous12345678910111213141516171819Next We have provided these questions from previous years grade 12 Ethiopian Secondary School Leaving Certificate Examination (ESSLCE) exams with the sole purpose of assisting students in their studies and preparations for upcoming exams. Please be aware that these questions are not indicative of future exam content. Good luck with your studies!