Microbiology: An Introduction Plus Mastering Microbiology, 13th Edition Test Bank By Tortora A Complete Guide

Microbiology: An Introduction Plus Mastering Microbiology, 13th Edition Test Bank By Tortora A Complete Guide. Which of the following is the best definition of biotechnology? A) The development of recombinant DNA technology B) Bacterial production of foods C) The curing of diseases D) The use of microorganisms in sewage treatment E) The use of living organisms to make desired products Answer: E 27) You are observing a cell through a microscope and note that it has no apparent nucleus. You conclude that it most likely A) Is a plant cell. B) Has a peptidoglycan cell wall. C) Is part of a multicellular animal. D) Moves by pseudopods. E) Has a cellulose cell wall. Answer: B 28) A nucleated, green cell that moves by means of flagella is a(n) A) Fungus. B) Alga. C) Helminth. D) Virus. E) Bacterium. Answer: B 29) An agent that reproduces in cells but is NOT composed of cells and contains RNA as its genetic material is a(n) A) Bacterium. B) Virus. C) Fungus. D) Helminth. E) Alga. Answer: B 30) A multicellular organism that has chitin cell walls and absorbs organic material is a(n) A) Fungus. B) Bacterium. C) Alga. D) Virus. E) Helminth. Answer: A 31) A multicellular organism that has a mouth and lives in an animal host is a(n) A) Fungus. B) Virus. C) Helminth. D) Bacterium. E) Alga. Answer: C 32) In the name Escherichia coli, coli is the A) Genus. B) Specific epithet. C) Kingdom. D) Discoverer. E) Domain. Answer: B 33) Which of the following pairs is mismatched? A) Jacob and Monod microbial genetics B) Winogradsky microbial ecology C) Jenner immunology D) Weizmann virology E) Lancefield immunology Answer: D 34) You are looking at a white cottony growth on a culture medium. Microscopic examination reveals it is multicellular. Which of the following conclusions about this organism is false? A) It has cell walls. B) It has DNA enclosed in a nucleus. C) It absorbs organic nutrients. D) It is eukaryotic. E) It is a bacterium. Answer: E 35) Which of the following groups include members that lack DNA? A) Fungi B) Viruses C) Helminths D) Protozoa E) Bacteria Answer: B 36) Which one of the following does NOT belong with the others? A) Cellulose B) Nucleus C) Chitin D) Peptidoglycan Answer: B 37) Which of the following organisms lack cell walls? A) Plantae B) Animalia C) Bacteria D) Fungi Answer: B 38) Which of the following does NOT belong with the others? A) Helminthes B) Animalia C) Protista D) Fungi E) Plantae Answer: C 39) Fungi differ from bacteria in that fungi A) Have cell walls. B) Spoil food. C) Are cellular. D) Have DNA. E) Have a nucleus. Answer: E 40) Archaea differ from bacteria in that archaea A) Use organic compounds for food. B) Reproduce by binary fission. C) Are prokaryotic. D) Lack peptidoglycan. E) Lack nuclei. Answer: D 41) Bacteria differ from viruses in that bacteria A) Can live without a host. B) Have DNA and RNA. C) Are composed of cells. D) All of the above. Answer: D 42) Which of the following lack a nucleus? A) Bacteria B) Fungi C) Protozoa D) Animalia E) None of the above Answer: A 43) Regular use of antibacterial cleaning products A) Prevents bacteria from growing. B) Is necessary for good health. C) Prevents occurrence of infections. D) Promotes survival of bacteria that are resistant. E) A, B, and D Answer: D 44) Which of the following statements about biofilms is false? A) Compared to free-living bacteria, biofilms are more sensitive to antibiotics. B) Biofilms on rocks provide food for animals. C) Biofilms on medical implants cause infections. D) Biofilms in pipes block the flow of water. E) Biofilms in your body protect mucous membranes from harmful microbes. Answer: A 45) Which of the following processes in making blue jeans is incorrectly matched? A) Cotton fungal hyphae B) Blue dye E. coli indigo C) Debleaching bacterial enzyme D) Plastic bacterial PHA E) Stone-washed fungal enzyme Answer: A 46) In 1835 Bassi showed that a fungus caused a silkworm disease, and in 1865 Pasteur discovered that a protozoan caused another silkworm disease. Why do we use Koch's postulates instead of "Bassi's" or "Pasteur's" postulates? Answer: 47) List two examples of biotechnology that involve recombinant DNA technology and two examples that do not. Answer: 48) Paul Berg received the Nobel Prize for developing the procedure for incorporating fragments of animal DNA into bacteria. List some reasons why his work was a major contribution to science. Answer: