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 -2023 G.C Grade 12 students can now access their exam results by visiting the Educational Assessment and Examination Services (EAES) website. Previous123456789101112131415161718192021Next 10. Which one of the following processes of aerobic respiration takes place in the Krebs cycle? Hydrogen atoms carried by reduced NAD and FAD are released and split into protons and electrons. Two molecules of ATP are used to phosphorylate each molecules of glucose. Two carbon group from acetyl coenzyme A reacts with a 4-carbon compound to form citrate. Fructose 1, 6-bisphosphate is split into two molecules of the three-carbon sugar GP. 11. Sickle cell anemia is caused by the replacement of glutamic acid by valine at a specific position in the beta chains of hemoglobin. This change is an example of which mutation? Addition Substitution Inversion Deletion 12. Stanley Miller conducted spark-discharge experiment by taking a mixture of gases that he thought to represent the primitive atmosphere of the Earth. All of the following were found in his gas mixture EXCEPT NH3 CH4 H2 CO2 13. Which one of the following sentences explains the Darwin theory of evolution? Environment changes creating a need for organism to change. There is a natural variation in features that are heritable. New features acquired in lifetime are passed to the offspring. There is development of new feature in order to survive. 14. Comparative anatomy provides evidence of evolution because it looks at structural similarities of organisms. has remains of animals and plants from the remote past. has an impression of animal even if the actual parts are missing. studies the development of the embryos of vertebrates. Previous123456789101112131415161718192021Next 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!