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Unformatted text preview: Test: 8451ex2fin Creation Date: 10/7/2008 Group Type: Randomize groups Penalty for guessing: 0 Name _____________________________________ Signature __________________________________ UFID ______________________________________ 1. Which of the following is/are characteristics of the Calvin cycle? (1) It is the only pathway used for CO 2 fixation in prokaryotes. (2) It generates large amounts of ATP and NADPH for use by the cell during biosynthesis. (*) It uses an enzyme called Rubisco to fix CO 2 . (4) More than one of these answers (1-3) is correct. 2. Which of the following are characteristics of N 2 fixation? (1) It is only carried out by prokaryotes. (2) It requires large amounts of H and ATP. (3) It is only carried out by anaerobic microbes. (*) More than one of these answers (1-3) is correct. 3. Which of the following are characteristics of replication in prokaryotes? (1) Replication is carried out by a complex that synthesizes DNA in both the 5' to 3' and 3' to 5' directions. (2) Replication is regulated by controlling the rate of DNA synthesis. (*) Replication is regulated at the initiation step. (4) More than one of these answers (1-3) is correct. 4. Which of the following occurs during the initiation of replication in bacteria? (1) DnaA binds to oriC sequences only when bound to cAMP. (*) DnaB functions as a helicase to unwind DNA. (3) SeqA binds to GATC sequences to help DNAPIII replicate oriC sequences. (4) More than one of these answers (1-3) is correct. 5. Which of the following are characteristics of mismatch repair? (1) It is used to fix frequent errors in DNA replication carried out by error-prone DNAP III and DNAP I . (2) It requires that GATC residues be fully methylated in order to synthesize new DNA. (*) It only works on newly synthesized DNA. (4) More than one of these answers (1-3) is correct. 6. Which of the following activities is carried out by RNAP holoenzyme? (*) Initiation of transcription at promoters. (2) Rho( ρ )-dependent termination of transcription. (3) Rho( ρ )-independent termination of transcription during attenuation. (4) More than one of these answers (1-3) is correct. 7. Which of the following are characteristics of termination of transcription in bacteria? (1) It requires the presence of stop codons in the DNA. (*) When a stemloop (hairpin) structure forms in the RNA transcript followed directly by a poly-U sequence, ATP is not required....
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This note was uploaded on 10/13/2009 for the course MCB 3020 taught by Professor Ogden during the Spring '08 term at University of Florida.
- Spring '08
- Calvin Cycle