I give you a die, and you roll it 600 times. Let X = the number of ones observed in those 600 rolls. You build the following line of reasoning:Steps1. You assume each roll is an independent, random outcome.2. You assume the dice is fair.3. Using your statistics book, you conclude that X is distributed binomial with mean 100 and variance 83.4. Based on this distribution, you conclude that you would observe X < 82 or X > 118 approximately 5% of the time.5. You observe X = 123 and conclude that the probability that X < 82 or X > 118 is not 5%.6. Because the probability that X < 82 or X > 118 is not 5%, you conclude the die is not fair.Which of these steps is part of inductive reasoning?
A. Steps 4 and 6 only
B. Step 5
C. All 6 steps
D. Steps 4, 5, and 6 only
Answer: B
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The disease caused by Streptococcus mutans is
A. plague. B. trachoma. C. dental decay or caries. D. atypical pneumonia.
In a certain bacterial gene, transcription fails to initiate properly. What is a possible explanation?
a) DNA has not properly unwound from histones. b) The is a mutation in the inverted repeat sequence so that a hairpin can not form. c) There is a mutation at the Pribnow box at the -10 upstream location. d) There is a mutation at the Pribnow box at the -35 upstream location. e) TATA-binding protein (TBP) has not been added yet.
Which virion release process is most often used by enveloped viruses?
A. Diffusion through channel protein B. Facilitated diffusion C. Budding D. Lysis
Which of the following is true of a gram-positive bacterium, and not of a gram-negative bacterium?
A. It has a thick cell membrane. B. It is more likely to trigger an immune response and cause inflammation and fever. C. It has a nucleus. D. It is larger, and thus weighs more grams. E. Its cell wall is made of a thick layer of peptidoglycan.