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 25. During light-independent reactions of photosynthesis, glucose is synthesized through synthesis of reduced NADP that provides hydrogen ion. six turns of the Calvin cycle to make one molecule of glucose. release of hydrogen ions at the electron transport chain. transmission of electrons to the inside of the thylakoid. 26. Which one of the following factors of photosynthesis is correctly matched with its effect? CO2 concentration - limits the reactions by influencing rate of initial reaction with RuBP Low temperature - limits the rate of reactions by reducing the number of electrons in the chlorophyll Low Rubisco - limits the number of reactions in the light dependent reaction Light intensity - limits the rate of ATP synthase enzyme action in light dependent reactions. 27. Identify the correct statement regarding translation in eukaryotic cells. The helicase enzyme begins to unwind a section of DNA. polymerase assembles free RNA nucleotides into a chain. first two codons of the mRNA enter the ribosome. RNA polymerase moves along the antisense strand. 28. Which of the following sentences explains how crossing over brings variation? In meiosis I, there is splitting up of pairs of homologous chromosomes now and line up. In meiosis I, there is exchange of a section of DNA between chromatids. In meiosis II, homologous chromosomes align themselves independent of other pairs. In meiosis II, chromatids from each chromosome are separated at random. 29. Which one of the following is an example of a learned behaviour? Nest-building Knee-jerk reflex Weaving a web Classical conditioning 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!