All questionsa) What is the hypothesis of Griffith’s experiment?b) Why did mouse No. 3 survived?c) Why did mouse No. 4 died?d) If Griffith had injected a fifth mouse with a combination of heat-killed R strain bacteria and heat-killed S strain bacteria, would the mouse have died? Give your reason. 5. Table 1 shows the result of Griffith's experiment. Four different groups of mouse wereinjected with different combinations of bacterial strains.Injected bacteriaLive S strainMouseResultsDiedLive R strainSurvivedHeat-killed S strainSurvivedDiedHeat-killed S strain + live R strainTable 1IMI234

Fredrick Griffith was a bacteriologist belonging who studied on the topics related to epidemiology…

All questions a) What is the hypothesis of Griffith’s experiment? b) Why did mouse No. 3 survived? c) Why did mouse No. 4 died? d) If Griffith had injected a fifth mouse with a combination of heat-killed R strain bacteria and heat-killed S strain bacteria, would the mouse have died? Give your reason.

All questions a) What is the hypothesis of Griffith’s experiment? b) Why did mouse No. 3 survived? c) Why did mouse No. 4 died? d) If Griffith had injected a fifth mouse with a combination of heat-killed R strain bacteria and heat-killed S strain bacteria, would the mouse have died? Give your reason.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter17: Bacterial And Viral Genetics

Section: Chapter Questions

Problem 1ITD

See similar textbooks

Similar questions

You discover a new bacteria and are interested in mapping its genome with respect to 10 genes. You are able to infer time-of-entry maps for four Hfr strains, which are pictured below. What is the map of the bacterial genome based on these Hfr experiments? Hfr1 Ga E Ne Hfr2 Sq Lix Tf Ne Hfr3 U I D Ga Hfr4 D U Sq O Sq - Lix - Tf - Ne -E- M- Ga - D -1-U O Sq - Tf - Lix -U -E-D- Ne -D -M- Ga OD-1-U- Sq - Lix - Ga - E -M- Tf - Ne OD- Ne - Ga -E- M - Sq - I-U- Tf - Lix O Lix - Ga - E - Sq -1-U- M -D- Tf - Ne
Row C D. B B. one: A C O phage with radiolabelled protein coat phage with radiolabelled DNA 100 10. phage infects The experiment shown above was designed by bacterium phage infects bacterium EXPERIMENT 1 phage shell is removed EXPERIMENT 2 요 Hershey & Hershey & Chase Meselson & Stahl Meselson & Stahl 8 phage shell is removed 28 no radioactivity in cells ii 48 radioactivity in cells LL and proved that ii DNA replication is semiconservative DNA is the hereditary material DNA replication is semiconservative DNA is the hereditary material (select the row that correctly completes the statement)
Five different HFR strains were isolated from a single F+ strain of E. coli. Timed matings showed that they transferred the following loci during the first hour of mating. The earliest loci are on the left, the slowest on the right for each order. Map these loci to a circle. strain early →→late 1. QZ ARL What markers are between B and X (shortest route)? SNWT O EMQ 3. 5. RBLE XAR BEMQZ EBLRA ZSNWT strain early →late 2. 4. TXARL XTWNS
Describe and explain the difference in results if the serial dilution step of the T4 bacteriophage suspension inour experiment was skipped (i.e., all of Step #3 of the procedures was skipped)? _________________________Current EventsThe Johnson and Johnson COVID-19 vaccine consists of inactivated adenovirus that has been altered to containgenetic information encoding SARS-CoV-2 surface spike proteins. The virus targets and delivers this geneticinformation to the cells of our respiratory tract, which produce benign SARS-CoV-2 surface spike proteins butare effective for training our immune system to defend us against SARS-CoV-2.Based on this information and your knowledge of viruses in general, could T4 bacteriophage be used in place of
3 2. The table below was obtained by P1 phage transduction followed by media selection of an E. coli strain lacking the three genes. Determine the map order of the genes given the information provided. Demonstrate CLEARLY which are closer or farther from each other (no numbers needed). 1 2 MAP: Experiment Selected marker Ala+ Gly+ Ser+ Unselected markers (select- ed for by subsequent plating) 27% Ser+, 2% Gly+ 3% Ser+, 1% Ala+ 35% Ala+, 4% Gly+
a. Explain what is happening the figure below. What important implication originated from The Hershey-Chase Experiment. (A) 32p-labeled phage DNA (B) 355-labeled phage proteins unlabeled 355-labeled empty phages empty phages infected bacteria unlabeled infected bacteria labeled with 3²p
A mutation that provides a bacterium with resistance to an antibiotic will be beneficial in all environments. True False MacBook Air 000 吕0 F8 F7 F6 F5 F4 F3 & 23 $ 4 Y
5 strains of E. coli are isolated. They may be mutated on the ara, mal, leu and pro genes, and only these 4 genes. The 5 strains (E1 to E5) are tested on 5 different media and colonies are observed the next day. Rich Media (Lb) E5 E4 E1 E2Ⓡ E3 MM + Mal+Leu E5 E4 X ● E1 E5 X MM + Mal E4 X X E1 E3 E2 E5 ✪✪ E2 E4 ● E1 E5 MM + Mal+Leu +Pro E2 E3 MM + Ara E4 X X E1 E3 E2 X X Colonies are indicated by a black dot, absence of a colony is indicated by a cross. 1) Determine the genotypes of the 5 bacterial strains (E1 - E5)
18. You want to express hemoglobin beta (HBB) in a bacteria model using a vector. You would like to amplify the following gene by PCR. GTAGAATATG ATAAGCGAAA CTGCAAATCG CGTTTGGGGC GATACAAGTA GTGTACGCGG ACCGCGCCGA GCGGGCTATG GTTTCTCCAC TATCAGTTCT TCTCCTGTCC CAGCGAAGTC GAGGTCCAGC CCTACGGTAC ATAACTAACA CGGTTTGAAG AAGATACGAT CTTACGAAGT AAAGAAAATT TGTAGTCAGC CCGGTTCGCT TGTGTCCAGC TAATCGATTG ATTGGCCCCA GCAGGCGAGA TGAACATAGT CATGCGCTGT CTAATAGCCC ATTTGACGTG TAGGTGGCGC TTTTATTTCT GAGGTGGAAA T a) If the primers were both 20 nucleotides long, what are the sequences for both PCR primers that will amplify only the highlighted region? Be sure to label the 5' and 3' ends. (4 points) b) What is the length (in bp) of the entire region amplified by their primers (i.e. the amplicon length)? (Note: the spacing in the above sequence is intentionally uniform) (2 points) c) If you start with 300 copies template DNA how many copies would you expect to produce if you ran the PCR for 22 cycles? Show your work.…
A 0.1ml aliquot of a bacteriophage stock with a concentration of 4* 10 phage/ml is added to 0.5ml of E. coli cells with a concentration of 2 * 10. cells/ml. What is the multiplicity of infection (MOI)? B I U Loon E ¶ ¶‹ B
During transduction, how does bacterial DNA end up in a phage (virus)? The phage is equally likely to incorporate bacterial DNA as phage DNA The bacteria forces it's own DNA into the phage to make this to happen This only happens in the lab. It's not real. The virus occasionally incorporates bacterial DNA by mistake How has DNA sequencing technology changed over time? It has become cheaper but is still a lengthy process O It has become cheaper and faster O The methods are simpler but the cost is still high O This technology has not changed in fifty years In the Griffith experiment, why didn't the bacteria from rough colonies harm the mice? Because they had been heat killed Because they do not make a capsule layer Because they do not take up DNA from the environment Because they were not actually Streptococcus
1. Choose the phrase from the right column that best fitsthe term in the left column.a. transformation 1. requires supplements in medium forgrowthb. conjugation 2. a method for mutagenizing genes inbacterial genomesc. transduction 3. small circular DNA molecule that canintegrate into the chromosomed. lytic cycle 4. the core genes that define a bacterialspecies plus all of the genes unique toindividual strainse. lysogeny 5. transfer of DNA requiring directphysical contactf. episome 6. integration of phage DNA into thechromosomeg. auxotroph 7. infection by phages in which lysis ofcells releases new virus particlesh. pangenome 8. transfer of naked DNAi. gene targeting 9. transfer of DNA between bacteria viavirus particles