PORTAGE Learning BIOD 210 Exam 4 Questions and
Answers | 100% Correct | Latest Update 2026/2027 | Graded
A+.
Explain how have multidrug resistant pathogens in health clinics been propagated.
Your Answer:
For quite a long time, the first course of treatment for illnesses was use of an antibiotic. Health care providers
prescribed antibiotics regardless whether they were actually able to diagnosis the illness be it viral or bacterial
or some other disease process. This chronic overuse over time led to bacteria mutating and subsequently
developing a resistance. Over time more pathogenic bacteria arose with the same type of resistance, making
the standard antibiotic treatment no longer an option, as it no longer would effectively work.
For many years, the first course of treatment for illness was antibiotics. Health providers
would use these drugs regardless of being able to diagnose illnesses 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 with the same
resistance, and standard antibiotic treatment no longer worked.
Question 2 pts
, Two auxotrophic bacterial strains are propagated in the laboratory, one deficient for leucine and the other
deficient for biotin. When cultured alone, they cannot grow on minimal medium, and when combined in the
same culture media, they still cannot grow in the minimal media. Can you tell if genetic transmission occurred
in this experiment in the case of genes that control synthesis of biotin or leucine?
Your Answer:
It does not appear that a genetic transmission occured in the experiment involving these genes because
even with having direct contact there is no growth for either one of the autotrophs.
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.
Answer is word for word from the answer key
Answer is word for word from the a'
pts
Question 3
Does spontaneous mutation positively or negatively affect evolution? Briefly explain your answer.
Your Answer:
Answers | 100% Correct | Latest Update 2026/2027 | Graded
A+.
Explain how have multidrug resistant pathogens in health clinics been propagated.
Your Answer:
For quite a long time, the first course of treatment for illnesses was use of an antibiotic. Health care providers
prescribed antibiotics regardless whether they were actually able to diagnosis the illness be it viral or bacterial
or some other disease process. This chronic overuse over time led to bacteria mutating and subsequently
developing a resistance. Over time more pathogenic bacteria arose with the same type of resistance, making
the standard antibiotic treatment no longer an option, as it no longer would effectively work.
For many years, the first course of treatment for illness was antibiotics. Health providers
would use these drugs regardless of being able to diagnose illnesses 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 with the same
resistance, and standard antibiotic treatment no longer worked.
Question 2 pts
, Two auxotrophic bacterial strains are propagated in the laboratory, one deficient for leucine and the other
deficient for biotin. When cultured alone, they cannot grow on minimal medium, and when combined in the
same culture media, they still cannot grow in the minimal media. Can you tell if genetic transmission occurred
in this experiment in the case of genes that control synthesis of biotin or leucine?
Your Answer:
It does not appear that a genetic transmission occured in the experiment involving these genes because
even with having direct contact there is no growth for either one of the autotrophs.
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.
Answer is word for word from the answer key
Answer is word for word from the a'
pts
Question 3
Does spontaneous mutation positively or negatively affect evolution? Briefly explain your answer.
Your Answer:
