bis 2a key_unit3_practice_exam2

bis 2a key_unit3_practice_exam2 - KEY Unit3 Practice Exam...

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KEY. Unit3 Practice Exam Bis2A / Gerhart. BE SURE THAT YOU TAKE THIS PRACTICE EXAM FIRST ON YOUR OWN, WITHOUT LOOKING AT THE KEY. T HE QUESTIONS IN THIS PRACTICE EXAM REPRESENT THE TYPES OF QUESTIONS THAT YOU MIGHT SEE ON THE ACTUAL EXAM ( AND THEY ARE IN FACT OLD EXAM QUESTIONS FROM B IS 2A). T HEY ARE TYPICAL OF THE LEVEL OF THINKING THAT WILL BE REQUIRED OF YOU . T HE EXACT TOPICS AND EXAMPLES WILL , OF COURSE , BE DIFFERENT SO ... PLEASE D O NOT ASSUME THAT STUDYING THIS PRACTICE TEST WILL BE SUFFICIENT PREPARATION FOR THE EXAM . After you’ve taken the exam, score each question in terms of the level of understanding (from Bloom’s Taxonomy) required to answer it. Key to Bloom’s scoring of exam questions 1 = knowledge (recall, list, recognize) 2 = comprehension (describe, explain, define, provide an example) 3 = application (predict, use) 4 = analysis (infer, interpret, compare / contrast) This time, I haven’t done the Bloom’s scoring for you ….
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Choose the best answer for each question. Mark more than one answer ONLY when SPECIFICALLY told to do so in the question. 1. New combinations of genes in bacteria result from all of the following except A. Transformation, the uptake of naked double-stranded DNA B. Conjugation, the transfer of a fertility plasmid C. Transduction, transfer of DNA by a virus D. Recombination, the exchange of DNA between replicated chromosomes. E. All of the choices cause new genetic combinations in bacteria 2. The mitochondria perform aerobic respiration in eukaryotic cells. The genes necessary to construct the proteins of the electron transport chain, the enzymes of the Krebs cycle, and the other structures found within the mitochondria, are housed in the A. nuclear DNA B. mitochondrial DNA C. chloroplast DNA D. Both A and B E. A, B, and C 3. Eukaryotic cells increase the likelihood of producing offspring with fitness equal to the parent cell through all except which TWO of the following A. increasing the genome size B. maintaining multiple chromosomes C. fusing two haploid cells to create a diploid cell D. increasing the rate of recombination between homologs E. exchanging plasmids 4. Two-step meiosis likely evolved from one-step meiosis to: A. provide a simpler way to form haploid cells from diploid cells B. Interfere with sister-killer genes during the creation of haploid cells from diploids C. Increase the likelihood of recombination D. Prevent the formation of tetraploid cells E. Encourage the formation of genders 5. When two cells fuse after meiosis, what determines whether a cell is ‘male’ or ‘female’? A. The ‘male’ travelled the farthest B. The ‘female’ retains its mitochondria (and perhaps, chloroplasts) C. ‘Male’ and ‘female’ only make sense in multicellular organisms D. The ‘male’ always makes more haploid cells than the ‘female’ E. The ‘female’ cares for the young VERSION A
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6. Genome size (the amount of DNA in a haploid cell) differs more among life forms than does gene number. What TWO answers best explain this observation?
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bis 2a key_unit3_practice_exam2 - KEY Unit3 Practice Exam...

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