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Portage Learning Biology Module 4 Exam With Answers (23 Solved Questions)

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    Module 4 Exam - Requires Respondus LockDown Browser + Webcam Due No due date Points 100 Questions 23 Time Limit 60 Minutes Requires Respondus LockDown Browser Attempt History attempt Time Score Latest tempt 1 20mites Woutol 10 Score for this quiz: 100 out of 100 Submited feb 10 at 3:23pm This attempt took 20 mites Question 1 8/8pts Explain How have mulidhug resistant pathogens fn heath clinics been propagatect Your Answer: For many year. the first course of treatment for liness vss antbiceics. Health providers ‘would use these drugs regardless of being able to diagnose llinesses as bacterial, viral, or ‘something altogether different. Over time, the overuse of antibiotics led to bacteria that accrued mutations leading to resistance. Eventually more pathogenic bacteria arose vith the | ‘same resistance, and standard antibiotic treatment no longer worked. Question 2 5/5pts Tuo auxotrophic bacters stains are propagated in the abaratory, one deficient for icine an the other deficient for biotin. When cultured alone, they cannot grow on minimal medium, and when combined in the same culture media, they stil cannot grow in the minal media, Can you tel i genetic transmission occurred in this experiment in the case of genes that control synthesis of biotin orleccine? Your Answer It does not appear that genetic transmission has occurred in this experiment involving these. genes because even with direct contact. there is no growth rescue for either of these ‘auxotrophs. Question 3 8/8pis Does spontaneous mutation positively or negatively affect evolution? Briefly explain your answer. Your Answer Spontaneous mutations positively affect evolution because the mutations that make the ‘organism better able to function or tolerate its environment help it to survive longer than its wild-type counterparts. The longer-lived organisms are likely to produce more offspring than. ‘these with shart survival times. Thus, an advantageous mutation will be passed on to future enerations, and if i truly enhances survival, it will eventuslly become the normal (wild-type) gene. Question 4 2/2pts True or Fase: A bacterium that ca growswel on minimal medium is an example of 3 prototroph Te

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