Straighterline / BIO 250 / Test 2 Questions and Answers 100% Pass

Straighterline / BIO 250 / Test 2 Question 1 Correct 4.50 points out of 4.50 Flag question d. Many bacterial have cytoskeletal elements. c. Some bacteria have 80S ribosomes. Question text 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. Question 2 Correct 4.50 points out of 4.50 Flag question Feedback correct The Prokaryote Controversy ASM Objective: 02.01 The structure and function of microorganisms have been revealed by the use of microscopy (including bright field, phase contrast, fluorescent, and electron). ASM Objective: 02.04 While microscopic eukaryotes (for example, fungi, protozoa and algae) carry out some of the same processes as bacteria, many of the cellular properties are fundamentally different. ASM Topic: Module 02 Cell Structure and Function Blooms Level: 2. Understand Learning Outcome: 03.01.01 List the characteristics originally used to describe prokaryotic cells Learning Outcome: 03.01.02 Form an opinion on the “prokaryote” controversy using current evidence about bacterial cells Section: 03.01 Topic: Bacteria Topic: Cellular Organization The correct answer is: Some bacteria have 80S ribosomes. Question text Endospores represent a challenge to the fields of industrial and medical microbiology because Select one: Straighterline / BIO 250 / Test 2 Straighterline / BIO 250 / Test 2 a. they are resistant to harsh environments, thus allowing survival of endospore- forming organisms under conditions in which non-endospore-forming cells would not survive. b. endospore-forming organisms are often dangerous pathogens. c. endospores are significantly smaller than vegetative cells. Question 3 Correct 4.50 points out of 4.50 Flag question Feedback correct Endospore Resistance ASM Objective: 02.03 Bacteria and Archaea have specialized structures (e.g. flagella, endospores, and pili) that often confer critical capabilities. ASM Topic: Module 02 Cell Structure and Function Blooms Level: 1. Remember Learning Outcome: 03.09.02 Explain why bacterial endospores are of particular concern to the food industry and why endospore-forming bacteria are important model organisms Section: 03.09 Topic: Bacteria Topic: Gram-Positive Spore-Forming Bacilli Topic: Internal Bacterial Structure The correct answer is: endospores are resistant to harsh environments, thus allowing survival of endospore-forming organisms under conditions in which non- endospore-forming cells would not survive, and endospore-forming organisms are often dangerous pathogens. b. osmosis. c. passive diffusion. d. active transport. a. facilitated diffusion. Question text The movement of molecules across a membrane from an area of higher concentration to an area of lower concentration with the use of a carrier molecule embedded in the membrane is called Select one: Straighterline / BIO 250 / Test 2 Straighterline / BIO 250 / Test 2 Question 4 Correct 4.50 points out of 4.50 Flag question Feedback correct Diffusion Through Membrane Carrier Proteins ASM Objective: 03.02 The interactions of microorganisms among themselves and with their environment are determined by their metabolic abilities (e.g., quorum sensing, oxygen consumption, nitrogen transformations). ASM Objective: 03.03 The survival and growth of any microorganism in a given environment depends on its metabolic characteristics. ASM Topic: Module 03 Metabolic Pathways Blooms Level: 1. Remember Learning Outcome: 03.03.04 Compare and contrast passive diffusion, facilitated diffusion, active transport, and group translocation, and provide examples of each Section: 03.03 Topic: Bacteria Topic: Cellular Transport The correct answer is: facilitated diffusion. 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? Straighterline / BIO 250 / Test 2 Select one: a. A b. B c. C Feedback correct Effect of Concentration Gradient on Rate of Transport ASM Objective: 03.02 The interactions of microorganisms among themselves and with their environment are determined by their metabolic abilities (e.g., quorum sensing, oxygen consumption, nitrogen transformations). Straighterline / BIO 250 / Test 2 Question 5 Correct 4.50 points out of 4.50 Flag question ASM Objective: 03.03 The survival and growth of any microorganism in a given environment depends on its metabolic characteristics. ASM Topic: Module 03 Metabolic Pathways Blooms Level: 4. Analyze Learning Outcome: 03.03.04 Compare and contrast passive diffusion, facilitated diffusion, active transport, and group translocation, and provide examples of each Section: 03.03 Topic: Bacteria Topic: Cellular Transport The correct answer is: A d. Presence or absence of double-stranded circular DNA genome Question text You are studying a newly discovered prokaryotic microorganism and are attempting to determine whether it will be classified in the domain Bacteria or in the domain Archaea. All of the following would be helpful in making that distinction except Select one: a. Sequence of small subunit ribosomal RNA b. Type of membrane lipids c. Presence or absence of peptidoglycan in cell walls Feedback correct Distinguishing Archaeons from Bacteria ASM Objective: 02.01 The structure and function of microorganisms have been revealed by the use of microscopy (including bright field, phase contrast, fluorescent, and electron). ASM Topic: Module 02 Cell Structure and Function Blooms Level: 3. Apply Learning Outcome: 04.01.01 Describe a typical archaeal cell Learning Outcome: 04.02.02 Compare and contrast archaeal and bacterial cell envelopes in terms of their structure, molecular makeup, and functions Learning Outcome: 04.05.01 Compare and contrast bacterial and archaeal cells in terms of the structures observed and their chemical makeup Section: 04.01 Section: 04.02 Section: 04.05 Topic: Archaea The correct answer is: Presence or absence of double-stranded circular DNA genome Straighterline / BIO 250 / Test 2 Question 6 Correct 4.50 points out of 4.50 Flag question 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 correct Food Vacuoles and Phagocytic Vacuoles ASM Objective: 02.01 The structure and function of microorganisms have been revealed by the use of microscopy (including bright field, phase contrast, fluorescent, and electron). ASM Topic: Module 02 Cell Structure and Function Blooms Level: 4. Analyze Learning Outcome: 05.04.03 List the endocytic pathways observed in mammalian cells, noting the structures involved and their role in the process, and noting those pathways that have been observed in eukaryotic microbes Section: 05.04 Topic: Cellular Organization Topic: Eukaryotic Structure/Function The correct answer is: l