PracticeExam4 and Final

PracticeExam4 and Final - Fall 2008 BIO 202 Practice...

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Fall 2008 BIO 202 Practice Midterm Exam 4 & Final Exam Page 1 MIDTERM EXAM 4 covers Questions #1 through #42 . Each correct answer is worth 1 point. FINAL EXAM (cumulative) consists of Questions #43 through #84 . Each correct answer counts 1 point. Do not leave ANY blank spaces on the scantron between Midterms 4 and the Final Exam. MIDTERM EXAM 4: Questions #1 through #42 1) Defective, mutant Trp- bacteria can’t ever make Trp. You mix live Trp- bacteria with heat-killed wild-type bacteria and plate them on media that doesn’t contain Trp. A few bacteria grow, and can now grow permanently without Trp. This happened because the Trp- bacteria a) Made proteins that do not contain Trp. b) Received a gene needed to make Trp from the dead wild-type bacteria c) Lost the Trp repressor d) Received Trp from the wild-type bacteria e) Upregulated the genes for Trp synthesis 2) How is a bacteriophage that will carry out transduction abnormal? a) Can’t bind to bacteria b) Has no DNA in its head c) Has the wrong DNA in its head d) Can’t inject DNA into bacteria e) Has abnormal sex pili 3) What is an F factor? a) A protein that is part of sex pili b) An antibiotic resistance plasmid c) A defective phage d) A piece of DNA that is important in bacterial conjugation e) A phage genome that exists in a bacterial cell 4) A DNA sequence called an operator a) Binds RNA polymerase b) Binds small molecules like Trp c) Contains several genes d) Binds a repressor protein e) Codes for a repressor protein 5) Genes in an operon a) Each have their own, separate promoter b) Are each transcribed into their own, separate mRNA c) Each code for one protein d) B and C are correct e) A, B, and C are correct 6) What is present in the basal transcription complex in eukaryotes? a) Transcription factors ONLY b) RNA polymerase ONLY c) Transcription factors AND RNA polymerase d) Control elements ONLY e) RNA polymerase AND control elements 7) What is true of enhancers? a) They consist of DNA b) Binding of activators to enhancers can stimulate transcription c) They always contain a TATA box d) A and B are correct e) A, B, and C are correct
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Fall 2008 BIO 202 Practice Midterm Exam 4 & Final Exam Page 2 8) Cells in your kidney and your liver make different proteins because they contain different a) Genes b) Transcription factors c) Enhancers d) Basal transcription complexes e) Operons 9) Coordinately-controlled genes in eukaryotes are always a) In the same operon b) Part of the same multi-gene family c) Transcribed into a polycistronic mRNA d) Each regulated by a different copy of the same control element e) On the same chromosome 10) Which are increasing levels of chromatin packing? a) DNA, nucleosome, looped domains, 30 nm fiber b) nucleosome, DNA, 30 nm fiber, looped domains c) DNA, looped domains, nucleosome, 30 nm fiber d) nucleosome, DNA, looped domains, 30 nm fiber e) DNA, nucleosome, 30 nm fiber, looped domains 11) About how many genes are in the human genome? a) 3,000
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This note was uploaded on 09/23/2010 for the course BIO 202 taught by Professor Dean during the Fall '08 term at SUNY Stony Brook.

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PracticeExam4 and Final - Fall 2008 BIO 202 Practice...

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