BIO 250 Microbiology (BIO250)

BIO250 Microbiology: Final Exam | 60 Questions With 100% Correct Answers 2023/2024 | Latest Update Graded A+. 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 ...

The most important aspect of agar that makes it a useful ingredient for solidifying media for bacterial culture is Select one: a. It provides an excellent nitrogen source for bacteria. b. Bacteria are unable to break it down so it stays solidi ed. c. It melts at 100 C and solidi es at temperatures below 50 C. d. It provides an excellent carbon and energy source for bacteria. The ribosomal RNA studies that led to the division of prokaryotic organisms into the Bacteria and the Archaea were...

Which of these are NOT considered living organisms? Viruses 9. Which of the following describes the order in which different types of RNA are involved in translation? Messenger RNA (mRNA), transfer RNA (tRNA), ribosomal RNA (rRNA) 10. What is the bacterial identification technique that, when positive, results in the bacterium staining two contrasting colors? Gram staining 11. Which of the following is found in some, but not all groups of eukaryotic microorganisms? Cell wall 12. In whic...

BIO 250 Exam 1 Questions With 100% Correct Answers | Latest Graded A+ | Straighterline. Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivated toxins can induce the synthesis of antitoxins in the blood of rabbits. These antitoxins (antibodies) are the basis of Select one: a. humoral immunity. b. cell-mediated immunity. c. antibiotic immunity. d. phagocyte-mediated immunity. Graded Exam 1 2/9 Question 2 Correct 4.50 points out of 4.50 Question 3 Correct ...

BIO 250 Final Exam Questions With 100% Correct Answers | Latest 2023/2024 (Straighterline). While each of these processes are believed to have evolved prior to aerobic respiration, which one is the most critical process, without which aerobic respiration could never have developed? Select one: a. Oxygenic photosynthesis b. Anoxygenic photosynthesis c. Alcohol fermentation d. Lactic acid fermentation Graded Exam 1 3/9 Question 5 Correct 4.50 points out of 4.50 Question 6 Correct 4...

BIO 250 Final Exam Review Questions With Correct Answers | Latest Verified 2023/2024 | Graded A+. Which of the following is found in some, but not all groups of eukaryotic microorganisms? Cell wall 12. In which instance would a researcher need to use Bergey's Manual of Systematic Bacteriology instead of Bergey's Manual of Determinative Bacteriology? To investigate the genetic history of a bacterial species 13. Which of the following structures is found in gram-negative bacteria but is abs...

The number of infectious viral particles can be calculated by Select one: a. counting the number of colonies that form on an agar plate. b. counting the number of plaques that form on an agar plate. c. counting the number of viral particles using a microscope. d. taking a turbidity measurement of a dilution of the viral solution. The correct answer is: counting the number of plaques that form on an agar plate. Which quantitation method is capable of providing the quickest measurement of...

BIO 250 Final Exam Questions With 100% Correct Answers | Latest Verified | Graded A+. What microbial process was responsible for changing Earth's atmosphere from one without oxygen to one with oxygen? Oxygenic photosynthesis 2. In the nitrogen cycle, which of the following phases involves the release of Nitrogen into the Earth's atmosphere? Denitrification 3. Farmers commonly inoculate legume crops with Rhizobium bacteria for which of the following purposes? The two form a symbiotic re...

Microbial drug resistance can be caused by mutations or by introduction of new genes into a population. Which of the following can only be caused by the introduction of new genes into a population? a. A metabolic pathway in the bacterium is shut down b. Binding sites for the drug are reduced in number or affinity to the drug c. New enzymes that inactivate the drug are synthesized d. Uptake of the drug into the bacterium is diminished Answer is c. This can only occur if new genes into a po...