MBIO 3401 FINAL EXAM NEWEST TEST

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MBIO 3401 FINAL EXAM NEWEST 2025/2026 TEST

BANK| COMPLETE 650 ACTUAL EXAM QUESTIONS

AND CORRECT DETAILED ANSWERS (VERIFIED

ANSWERS) ALREADY GRADED A+| MBIO 3401 EXAM

PREP|| BRAND NEW!!

what are paralogs .....ANSWER..... genes that have arisen from a duplication within a species and have evolved to carry out different functions what are homologs .....ANSWER..... a gene derived from a common ancestral gene CAN BE ORTHOLOGS OR PARALOGS what are orthologs .....ANSWER..... a gene present in more than one species is derived froma common ancestral gene and encodes the same function 1 / 4

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what feature are associated with DNA polymerase but not RNA polymerase .....ANSWER..... has proofreading activity, needs a primer the ancestor of mitochondria derives from ancient .....ANSWER.....proteobacteria (respiring bacteria) what type of transport is required to deliver nutrients from low nutrient aqueous environment where they are at lower concentration than inside the cell .....ANSWER..... active transport facilitated diffusion .....ANSWER..... a process of passive transport acros a membrane that is facilitated by transport protein passive diffusion .....ANSWER..... net movement of molecules across a membrane without energy expenditure aquaporins .....ANSWER..... 2 / 4

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prominent members of microbial communities beneath icebergs .....ANSWER..... psychrophiles barophiles .....ANSWER..... aka piezophile. an organism that requires high pressur acidophile .....ANSWER..... organism that grows fastest in acid thermophile .....ANSWER..... adapted for optimal growth at high temperatures mesophiles .....ANSWER..... organism with optimal growth between 20-40 degrees C order of gram stain .....ANSWER..... crystal violet, iodine, decolorizer, safranin eutrophication .....ANSWER..... sudden infusion of large quantities of formerly limiting nutrients 3 / 4

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why would eutrophication cause fish death .....ANSWER..... the nutrients cause an overgrowth of microbes, which in turn produces too much attachment organelle that is a membrane bound extension of the cytoplasm .....ANSWER..... stalks what are pilli .....ANSWER..... aka fimbria. a straight protein filament composed of a tube of protein monomers that extend from a bacterial cell envelope what are fimbrae .....ANSWER..... aka pilllus flagella .....ANSWER..... a filamentous structure for motility.

prokaryotes- a helical protein filament attached to a rotary motor

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