SCIN 130 Quiz 6 - Questions, Answers and Feedback

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SCIN 130 Quiz 6. Question 1 of 31 3.0 Points The community of bacteria in the human body provides benefits EXCEPT?  A. Development of immune system  B. Maintenance of gut  C. Increase in anti... biotic resistance  D. Protection from pathogens Feedback:Great job. Question 2 of 31 3.0 Points Why were only anaerobic organisms able to live during the first 2 billion years on Earth?  A. the atmosphere was anoxic  B. the atmosphere was cold  C. the atmosphere was hyper-nitrogenous  D. the atmosphere was hot Feedback:Great job. Question 3 of 31 3.0 Points What is an example of a positive relationship between fungi and plants?  A. infection of stored seeds such as corn  B. mycorrhizae increase nutrient uptake in the soil  C. decay of standing or recently felled trees  D. fungi infecting a potato crop, so that most plants die Feedback:Great job. Question 4 of 31 3.0 Points Why are Protists difficult to classify?  A. They are not motile  B. They use the same reproductive strategies  C. They are similar in cell structure  D. They have varied habitats Feedback:Great job. Question 5 of 31 3.0 Points What are two defining characteristics of prokaryotes?  A. multicellular, lacking nucleus  B. single-celled, has nucleus  C. single-celled, lacking nucleus  D. multicellular, has nucleus Feedback:Great job. Question 6 of 31 3.0 Points What is one reason for a high rate of resistant bacteria on Earth today?  A. overuse of antibiotics  B. increase in travel  C. lack of personal hygiene  D. decrease in sleep Feedback:Great job. ................................CONTINUED.............................. [Show More]

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