202pracexam3ans - Biology 202 Exam 3 Fall 2006 MATCHING...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 202 Exam 3 Fall 2006 MATCHING: Match the definition with the correct term. 2 pts 1. __D__ Describes gene expression in which genes are being transcribed all the time 2. __R__ Transfer of DNA between bacterial cells that is mediated by a virus 3. __N__ Describes a single mRNA transcript containing two or more adjacent protein- coding genes 4. __M__ Ribosomal site that contains a tRNA linked to a growing chain of amino acids 5. __F__ Type of cell in which an F factor has been excised from the Hfr chromosome and re-circularized into an F plasmid 6. __L__ Phage life cycle in which the phage takes over the bacterium and uses it to express the phage’s genes and to produce progeny phages 7. __C__ DNA library that represents expressed genes 8. __E__ A small molecule involved in controlling expression of many regulated genes 9. __Q__ Phage that can undergo both the lytic and lysogenic cycles 10. __A__ mRNA structure responsible for ribosome recognition a. 5’ cap g. F+ cell m. P site s. transformation b. A site h. F- cell n. polycistronic c. cDNA library i. genomic library o. regulated d. constitutive j. intron p. repressor e. effector k. lysogenic cycle q. temperate f. F’ cell l. lytic cycle r. transduction MULTIPLE CHOICE: Select the best answer from the answers provided. Choose only one answer. 2 pts 1. What is the product of the lacI gene? a. lactose b. tryptophan c. B-galactosidase d. repressor e. CAP protein
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2. Your bone cells, muscle cells, and skin cells perform different functions because a. each cell contains different kinds of genes. b. they are present in different organs. c. different genes are active in each kind of cell. d. they contain different numbers of genes. e. each cell has different mutations. 3. Under normal conditions in wild type E. coli , the lac operon is under ________ control. a. positive b. negative c. inducible d. both B and C e. all of the above 4. During transcription of the trp operon, pairing of regions 2 and 3 in the leader peptide mRNA creates a(n) ______ signal. a. pause b. termination c. antitermination d. induction e. repression 5. The following DNA sequence includes the beginning of a sequence coding for a protein. What type of mutation is created if the C marked by an asterisk was changed to an A? 5’ AGGCTATGAATG GACACTGCGAGCCC…3’ * a. missense mutation b. nonsense mutation c. silent mutation d. frameshift mutation 6. You are given two E. coli auxotrophs (strain A: thr - str S ; strain B: leu - str R – each strain is auxotrophic for only one amino acid). A transformation experiment is set up to allow transformation of DNA from strain A to cells of strain B. How would you evaluate the experiment to determine whether DNA from A transformed strain B (assume no transformation of antibiotic sensitivity or resistance)? a. Plate potential B transformants on medium containing no additions.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/02/2008 for the course BIO 202 taught by Professor Howe during the Spring '06 term at New Mexico.

Page1 / 6

202pracexam3ans - Biology 202 Exam 3 Fall 2006 MATCHING...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online