Straighterline/BIO 250/Microbiology quizzes units 1-4 updated

Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated Question 2 Incorrect 0.00 points out of 4.50 Flag question Feedback The correct answer is: Some bacteria have 80S ribosomes. b. Spheroplasts retain their outer membrane but protoplasts do not. c. There is no difference; these terms are synonyms. d. Spheroplasts form from cocci and protoplasts form from bacilli. a. Spheroplasts retain the peptidoglycan but protoplasts do not. Question text How do spheroplasts and protosplasts differ? Select one: Question 3 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: Spheroplasts retain their outer membrane but protoplasts do not. d. All of the choices are correct. Question text Which of the following is a characteristic of active transport? Select one: a. Saturable uptake rate b. Use of ATP or a proton gradient as a source of metabolic energy c. Can move materials against a concentration gradient Question 4 Feedback The correct answer is: All of the choices are correct. d. Many bacterial have cytoskeletal elements. c. Some bacteria have 80S ribosomes. Questions from Quiz Assignments 1-4 (3 of these sets are all quiz 1) Question 1 All of the following are reasons why some scientists believe that the term “prokaryote” is a somewhat artificial designation and should be discarded except Select one: a. Some bacteria have internal membranous structures. b. Some bacteria have their genetic material enclosed within a membrane. Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated Question text You have been studying the effect of a concentration gradient on the rate of transport of a nutrient into a bacterial cell. If a carrier protein is involved in the transport of this nutrient, which curve would you expect to see? Select one: a. A b. B c. C Correct 4.50 points out of 4.50 Flag question Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated d. Some have an outer layer of complex polysaccharide and some have an outer layer of protein. Question text Which statement correctly describes archaeal cell walls? Select one: a. Some have an outer layer of complex polysaccharide. b. Some have an outer layer of protein. c. Many have peptidoglycan. Question 6 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: Some have an outer layer of complex polysaccharide and some have an outer layer of protein. d. Golgi apparatus. c. lysosomes. Question text The food vacuoles and phagocytic vacuoles are most similar to Select one: a. mitochondria. b. chloroplasts. Question 7 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: lysosomes. Question text A newly discovered unicellular microbe has a nucleus containing linear chromosomes and surrounded by a membrane. It has mitochondria, 80s ribosomes, and is covered by cilia. There is no cell wall external to the plasma membrane. This organism most likely would be a/an Select one: Question 5 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: A Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated Question 8 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: protozoan. d. All of the choices are correct. Question text Which of the following is a function of the mitochondrion? Select one: a. Tricarboxylic acid cycle enzyme reactions b. Electron transport c. ATP synthesis Question 9 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: All of the choices are correct. c. 600–1,000 nm. d. 1,000–10,000 nm. b. 10–400 nm. Question text Virion size ranges from Select one: a. 1–40 nm. Question 10 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: 10–400 nm. Question text d. fungus. e. algae. c. protozoan. a. bacterium. b. archaeon. Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated Question 11 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: Budding d. All of the choices are correct. Question text Which of the following diseases is (are) caused by prions? Select one: a. Scrapie b. Mad cow disease c. Kuru and Creutzfeldt-Jakob Disease Question 12 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: All of the choices are correct. c. Plasmodium d. Toxoplasma b. Eimeria Question text Which of the following apicomplexan genera cause coccidiosis in chickens? Select one: a. Pneumocystis Question 13 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: Eimeria Question text d. Diffusion through channel protein c. Budding Which virion release process is most often used by enveloped viruses? Select one: a. Lysis b. Facilitated diffusion Straighterline/BIO 250/Microbiology quizzes units 1-4 Updated Question 14 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: Trichonymphida d. toxipodia c. toxicysts Question text Some ciliophora can discharge toxic threadlike darts called , which are used in capturing prey. Select one: a. spikes b. spicules Question 15 Correct 4.50 points out of 4.50 Flag question Feedback The correct answer is: toxicysts d. metatrophy c. mixotrophy Question text The simultaneous use of both organic and inorganic forms of carbon is called . Select one: a. osmotrophy b. omnitrophy Question 16 Correct Feedback The correct answer is: mixotro