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c https //aexams.rmchlearning.org/rdex phpboen University 100% Messages Assessments Account Inte Assessments> BIOL205 Final C Rev5 fyou have writng the exam. You Peust also submit the paper to th r whien you hav HOW TO WRITE THIS ONLINE EXAM L You must dlick Save Answer' berfore you move to a new question. 2. You an change your annven at any time during your eam, lamember to dick·Save Answer" afteyou make im 3. When you ane finished your exam, click Submit This Assessment at the botton of yeur soen Tip: To soe the whole exam on one sareen dick "Show All Questions' at the top of your scroen 000 86000 marks Question 64 of 66 The pH of stomach aods is usualy /1 marks O b. 10. O d. 12. Save Answer Submit this Assessment HP L1910Explanation / Answer
64. Option a is the correct answer. The pH of the stomach acid is usually 2. The stomach acid is HCl which causes a pH value near about 2.
22. Option c is the correct answer. Temporal isolation indicates a barrier in mating because of different timing of breeding.
21. Option b is correct. Biological species concept include sexual reproduction. Binary fisson in bacteria is asexual reproduction and therefore biological species concept cannot be applied to bacteria.
23. Option c is the correct answer. Prezygotic isolation occurs before mating of individuals while postzygotic isolation occurs after members of two different species have mated and produced a hybrid offspring.
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