BIO2201, Fall 2017 Final Exam Name A top favorite movie DON (Image source: Magnus Manske, 2002, from Nupedia) which is a form of gene 1. The image shown above represents the process known as transfer. A) transduction; horizontal C) transformation; vertical B) conjugation; horizontal D) binary fission; vertical E) conjugation; vertical and the type of DNA transferred via this 2. The structure shown connecting the two cells depicted above is known as a structure is typically DNA. A) flagellum; plasmid C) pilus; plasmid B) transduction bridge; chromosomal D) microvillus; chromosomal E) pilus, chromosomal 3. By the conclusion of the process depicted above, the donor cell is typically A) F-; F+ C) F+; F- B) F-; F- D) F+; F+ ar and the recipient cell is E) F++; F+ bacterial cells carry a thin layer of 4. Gram bacterial cell walls have a thick layer of peptidoglycan, while Gram peptidoglycan along with an outer membrane. A) negative; positive C) neutral; positive B) positive; negative D) cracker, negative 5. The cell walls of most Gram positive bacteria contain which plays multiple roles in maintining cell shape and overall bacterial physiology. This component is also required for resistance to various antibiotics. Gram negative bacteria carry on the cell surface. This molecule can trigger an intense immune response. A) lipopolysaccharide; techoic acid C) lipopolysaccharide; lysostaphin B) an outer membrane; techoic acid D) techoic acid; lipopolysaccharide 6. Entamoeba histolytica is the etiological agent of This infectious agent is an example of a A) VCJD; virus B) Q fever; bacterium C) amoebic dysetery; protozoan D) amoebic dysentery; fungus E) Q fever; protist 7. A previously unidentified infectious agent is decimating the bat population in a wooded area. A pure culture of the suspected agent has been cultivated, and reasearchers plan to infect healthy animals with this agent to see if the same disease symptoms observed in wild bats are recreated. The steps described here are in keeping with what? A) Spallanzani's criteria C) Pasteur's postulates B) Koch's postulates D) Redi's criteria 8. Feed bans and slaughtering practice regulations have aimed to prevent contamination of cattle and cattle products with neural tissue which could transmit what type of infectious agent to humans and cause spongiform encephalopathy? A) viruses C) prions E) Toxoplasma B) viroids D) toxigenic Aspergillus 9. The target organ of PrpSc is the while the organ primarily affected by the Aspergillus flavus mycotoxin is the A) large intestine; stomach B) stomach; large intestine C) liver; brain D) brain; liver E) brain; neuromuscular junction 10. Listeria monocytogenes is the etiological agent of babies. A) Legionnaires disease C) leishmaniasis B) toxoplasmosis D) listeriosis which is particularly dangerous for older individuals and unborn E) legionellosis 1 1. 2. 3. 长身 4. 5. 6. et Bacterial DNA Vital DNA (Image: Public Domain) 11. The model shown above depicts the process known as The particle responsible for mediating the transfer of genetic material from one bacterial cell to another in this process is known as a A) conjugation; lysogenic phage C) transformation: lysogenic phage E) homologous recombination; lysogenic phage B) transformation; defective phage D) transduction; defective phage gene transfer, which often allows bacterial cells to gain the 12. The process depicted in the model above is an example of capacity to survive in new environments, due to enhanced genetic A) horizontal; similarity C) vertical; diversity B) vertical; similarity D) horizontal; diversity E) capsid: homogeneity 13. The cell depicted in steps 1, 2, and 3 of the model above A) Becomes F+ C) has died by the end of stage 3 B) Re-forms its cell envelope and is the same cell as that D) is a bacteriophage depicted in step 4 1 2 3 0888 (Image source: Mcstrother, 2011 via Wikimedia Commons) which is an example of 14. The image shown above depicts the process known as gene transfer. A) transformation; horizontal B) binary fission; vertical E) conjugation; vertical C) binary fission; horizontal D) transduction; vertical 15. The key reason that Pasteur's swan neck flask experiment settled the debate over spontaneous generation was which of the following? A) access of broth to AIR (but not dust (carrying microbes)) during incubation C) broth composition B) duration of boiling D) temperature during prolonged incubation 16. The notion that living things can arise only from other living things is called while the idea that living things could arise from NON-living things was called A) biogenesis; formogenesis C) spontaneous generation; biogenesis B) biogenesis; spontaneous generation D) formogenesis; biogenesis 17. The leading cause of foodborne illness in the US is This agent causes viral gastroenteritis and is easily transmitted from person-person or in contaminated food/water via the fecal-oral route, with a very low infectious dose. A) Cryptosporidium C) norovirus E) human papillomavirus B) Entamoeba histolytica D) hepatitis A 18. Clostridium botulinum endospores are heat and foods that are a particular risk for causing illness due to the toxin made by this organism are low acid foods. A) resistant; canned C) resistant; frozen B) sensitive; frozen D) resistant, but only for short time (several minutes); canned 2
Purchase answer to see full attachment