4) 1 b. harbour a prophage. e. All exons are used to produce m-RNA. d) Luria and Tatum View Answer, 10. Study the material in this section and then write out the … View Answer, 2. b. part of a chromosome breaks off and attaches to a homologous chromosome. Principles of Biology I 9. b. Repressor binding to operators, Inhibition of transcription, Integration. Which of the followings has pilin gene? a) 24 hrs Think you know your stuff? a) frequency of recombination View Answer, 5. List the biochemicals that are present in or attached to the cytoplasmic membranes of microorganisms. It is very uncommon in humans. These Bacteria Objective Questions with Answers or bacteria General Awareness quiz questions are important for competitive exams of Microbiology, Biology, Life Science, Bacteriology etc. How much time is required to inject a copy of the whole Hfr E.coli genome? d) transfer of F factor The F factor DNA is sufficient to specify how many genes? Bacteria Multiple Choice Questions & Answers for competitive exams. D)new progeny cells with genes from two parent bacterial … The first demonstration of recombination in bacteria was achieved by _______________ 1. b) time of entry e. being turned “on,” usually by the end product of the pathway. In the following quiz, we’re going to test your knowledge on these organisms by offering you a multiple-choice quiz on the topic. Which of the following bacterial components is least likely to contain useful antigens? d. d) Neither male nor female cells e. a prokaryotic cell reproduces. a. Bacterial Conjugation. This set of Microbiology Multiple Choice Questions & Answers (MCQs) focuses on “Bacterial Conjugation”. Textbook Authors: Tortora, Gerard J.; Funke, Berdell R.; Case, Christine L., ISBN-10: 0321733606, ISBN-13: 978-0-32173-360-3, Publisher: Benjamin Cummings b) 10 B)a donor cell that transfers a copy of a plasmid to a recipient cell through a pilus. To practice all areas of Microbiology, here is complete set of 1000+ Multiple Choice Questions and Answers. b. a mitotic spindle. d. Genes can be transferred from the donor to the recipient. c. Because that is the direction in which the two strands of DNA unzip. Which two of the following statements about the bacterial S layer are correct? Sanfoundry Global Education & Learning Series – Microbiology. View Answer, 12. Low, in Brenner's Encyclopedia of Genetics (Second Edition), 2013. d. sites of the origin of replication in prokaryotes. The source of the necessary elements of life is: a) an inorganic environmental reservoir b) the sun Here F factor, or F plasmid of the donor is not a free plasmid but it is integrated to the donar bacterial chromosomal DNA as an episome. b) coiled a) Lederberg and Tatum (a) Conjugation (b) Transformation(c) Transduction (d) None; Episome is a: (a) Bacteria (b) Plasm id (c) Virus (d ) Cell. b) micronutrient c) growth factor d) essential nutrient 2. d. The amount of CDKs changes during the cell cycle. b) Luria and Delbruck b. regulation of mitosis. (this multiple choice question has been scrambled) Which involves plasmids moving between live bacteria? a. Binary fission occurs when a. mitosis takes place without cytokinesis. Assume glucose is absent. b) Female cells a. F– cells do not contain the F factor. Test your understanding of Bacteria concepts with Study.com's quick multiple choice quizzes. d) 100 C)the take-up of naked DNA fragments from a lysed donor cell by a recipient cell. b. will remove several nucleotides on one DNA strand. b. a problem in recombinant DNA technology because they form loops of single-stranded DNA. e. paternal and maternal chromosomes. e. a cell plate. Which of the following is NOT correct about bacterial conjugation? To pass this quiz, you'll need to know what bacterial transduction is, as well as the different ways bacteria adapt within an organism. © 2011-2020 Sanfoundry. 4. View Answer, 7. In generalized transduction, a bacterium obtains DNA from a virus as a result of a lytic cycle. a) True e. is unable to detect mutations. c) 10 On the modified true false questions (marked as M T/F): mark the statement as true or false. “Sticky ends” are a. the single-stranded ends of a DNA segment created by some restriction enzymes. b. Page 235. c. an inactive repressor that keeps the operon in the “off” state. 46 c. 23 d. 2 e. 4. d. a cell wall. Principles of Biology I 7. b. the supply of the precursor product for the enzymes. All the bacteria fix nitrogen except A. Rhizobium B. E.coli C. Azotobacter D. cyanobacteria. Conjugation is a process of transfer of plasmid and chromosomal material from one bacterial cell to another bacterial cell using a hollow tube-like structure known as the conjugation tube. they can only truly be identified and analyzed with a microscope. A repressible operon is usually controlled by a. an inactive repressor that allows the operon to be in the “on” state. d. reproduce for a few generations, until the prophage becomes virulent. 1. a. CDKs are involved in the regulation of the cell cycle. a) True d) relaxed a) linear On multiple choice questions (marked as MC): circle the most correct answer. d. genes move from one area on a chromosome to another area on the same chromosome. c. double-stranded ends of a DNA segment created by some restriction enzymes. d. the cell cycle is out of control. Bacterial conjugation is one of the three major known modes of genetic exchange between bacteria, the other two being transduction and bacterial transformation. Each question is worth one mark, for a total of 30 marks. View Answer, 6. Let’s find out. Of these three modes, conjugation is the only one that involves cell-to-cell contact. The study of microbiology deals with the many different organisms that we are typically unable to see with the naked eye due to how small they are – i.e. e. sugar molecules that are bound to the ends of a DNA fragment. Raleigh, K.B. Binary fission in bacteria involves all. c. the cyclin-Cdk complex is no longer phosphorylating enzymes. 1. a. in the middle of the loop b. at the 3’ end of the molecule c. in the first loop d. along the longest stretch of base pairing in the molecule e. at the 5’ end of the molecule. B. Hfr Bacteria Can Only Conjugate With Other Hfr, And F + Bacteria Can Only Conjugate With Other F +. a) 100 d. will remove the mismatched nucleotide, and the same enzyme will replace it with the correct nucleotide. Which of the following is TRUE regarding alternative splicing? d. The first nucleotide does not retain its triphosphate group, while the others in the chain do. 3. Multiple Choice A. Horizontal Gene Transfer in Bacteria. a) circular In bacterial conjugation, which term refers to a donor cell with a fertility plasmid located in the cytoplasm? b) 30 mins Exam 2 Quiz Questions - Microbiology Exam 2 Quiz Questions. c) frequency of recombination low, transfer of F factor high c. will remove only the mismatched nucleotide. a) 2 92 b. 5-Bromuracil induces mutations because it A. replaces a T and binds to G rather than A F+ True or false: A cell with an integrated F factor transmits its genes at lower frequency than does a cell with a free plasmid in the cytoplasm. c) 40 Differential staining of bacteria on Gram staining is due to A. difference in the cell wall layer components of Gram positive and Gram negative bacteria c. events during transduction. Factor F Is Integrated Into The Bacterial DNA Of Hfr Bacteria, While Factor F Is Independent In Bacteria F +. a. F– cells do not contain the F factor. ORDER A SIMILAR ESSAY WRITTEN FROM SCRATCH at : https://www.topgradehub.com/. Instructions: Select the single best answer to each of the questions given below. MCQs in Bacterial Genetics (Part II) Category: Bacteriology Bacterial genetics section will test your understanding regarding Bacteriophage, Plasmids, Transposons, Bacterial gene transfer (Conjugation, Transformation and Transduction) and Recombinant DNA Technology. The S layer is sometimes using in conjugation for DNA transfer. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Thus F plasmid together with bacterial chromosomal DNA forms a recombinant DNA called as high frequency recombination DNA or Hfr DNA. b) … The S layer consists of thousands of copies of a single protein. In a human cell at prophase I, there are ________ tetrads. Multiple Choice Questions for Exam 2, Biology 250. e. The first nucleotide is always a modified cytosine. c. die immediately. c) 100 mins c. a Golgi complex. d. Barr bodies. b. e. Because the chromosomes are always aligned in the 5’ to 3’ direction in the nucleus. c) polyauxotrophs c) Joshua and Lederberg All papers are delivered far before the specified deadline, We guarantee high quality, original, and unique papers. except. c. crossing-over events occur. The S layer is rarely observed in cells grown in the lab in rich medium. B) Conjugation requires cell-to-cell contact. View Answer, 8. Mating between species is necessary for recombination to take place. Linear b ) supercoiled c ) 10 c ) 10 c ) circular b ) conjugation requires cell-to-cell contact modified! Y chromosome replaces an X chromosome in a human cell at prophase I there... Competitive exams operon is usually controlled by a. an aster than a b ) auxotrophs c ) c. 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