BIO 250 Final Exam (Microbiology) | 60 Questions With 100% Correct Answers | Latest Update | Graded A+

BIO 250 Final Exam (Microbiology) | 60 Questions With 100% Correct Answers | Latest Update | Graded A+. What microbial process was responsible for changing Earth’s atmosphere from one without oxygen to one with oxygen? Select one: a. anaerobic respiration b. decomposition c. oxygenic photosynthesis d. temperature regulation In the nitrogen cycle, which of the following phases involves the release of nitrogen as into the Earth’s atmosphere? Select one: a. ammonication b. denitrication c. nitrication d. nitrogen xation Final Exam 2/21 Question 3 Incorrect 0.00 points out of 5.00 Question 4 Incorrect 0.00 points out of 5.00 Question 5 Incorrect 0.00 points out of 5.00 Farmers commonly inoculate legume crops with Rhizobium bacteria for which of the following purposes? Select one: a. The bacteria cause the crops to use less water and, therefore, be more drought-resistant. b. The bacteria kill off other, more virulent, bacteria that are harmful to the crops c. The bacteria secrete a chemical that inhibits the growth of unwanted weeds. d. The two form a symbiotic relationship increasing the plant’s access to nitrogen. In the secondary phase of wastewater treatment, why is air injected into the sludge as it is stirred and recirculated? Select one: a. The bioremediators need oxygen. b. The air lowers the pH of the solution. c. The air keeps the sludge from clogging the pipes. d. Oxygen kills the bacteria in the water. Which of the following microorganisms is used to make yogurt? Select one: a. Lactobacillus bulgaricus b. Pennicillium roqueforti c. Streptococcus lactis d. Yeast Final Exam 3/21 Question 6 Incorrect 0.00 points out of 5.00 Question 7 Incorrect 0.00 points out of 5.00 Question 8 Incorrect 0.00 points out of 5.00 ATP is a Select one: a. by-product of ADP that breaks down phosphates for photosynthesis. b. catalyst for all chemical reactions that occur in the cell. c. long chain of nucleotides responsible for protein synthesis. d. nucleotide that releases and stores energy in the cell. A viral capsid is composed of Select one: a. carbohydrates. b. lipids. c. enzymes. d. proteins. Which of these are NOT considered living organisms? Select one: a. monera b. plants c. protists d. viruses Final Exam 4/21 Question 9 Incorrect 0.00 points out of 5.00 Question 10 Correct 5.00 points out of 5.00 Question 11 Incorrect 0.00 points out of 5.00 Which of the following describes the order in which different types of RNA are involved in translation? Select one: a. messenger RNA (mRNA), ribosomal RNA (rRNA), transfer RNA ( tRNA) b. messenger RNA (mRNA), transfer RNA (tRNA), ribosomal RNA (rRNA) c. ribosomal RNA (rRNA), messenger RNA (mRNA), transfer RNA (tRNA) d. ribosomal RNA (rRNA), transfer RNA (tRNA), messenger RNA (mRNA)