Question 20
Low doses of antibiotics are often added to livestock feed to increase production. Studies have shown that bacterial populations constantly exposed to the sublethal doses can evolve resistance to the antibiotics. A
research group claimed that when a population of bacteria are constantly exposed to sublethal doses of streptomycin, their fitness declines due to the increased energy requirements for survival in the presence of the
antibiotic. For subsequent studies, the researchers wish to determine whether adding a low, sublethal dose of an additional antibiotic causes further decline in the fitness of the bacteria
Which of the following best represents the next step the researchers should take with respect to experimental design?
Group 1: high dose of streptomycin + low dose of additional antibiotic
Group 2: low dose of streptomycin + high dose of additional antibiotic
Group 1: low dose of streptomycin + no dose of additional antibiotic
Group 2 low dose of streptomycin + low dose of additional antibiotic
Group 1: no dose of streptomycin + no dose of additional antibiotic
Group 2: low dose of streptomycin + low dose of additional antibiotic
Group 1: low dose of streptomycin + low dose of additional antibiotic
Group 2: high dose of streptomycin + high dose of additional antibiotic
Type here to search
o
RI
Solved
Show answers
More tips
- S Society and Politics Understanding Politics and Its Role in the Development of Civilization...
- H Health and Medicine Everything You Wanted to Know About Male Circumcision: Its Goals and Effects...
- L Leisure and Entertainment Couchsurfing: A New Way to Travel...
- G Goods and services Which TV is better - LCD or Plasma?...
- S Sport How to Learn to Pull Up on Monkey Bars?...
- L Leisure and Entertainment Scrapbooking: What is it and Why is it Becoming More Popular?...
- C Computers and Internet Where did torrents.ru move to?...
- B Business and Finance Understanding Cash Flow: What It Is and How It Works...
- C Computers and Internet What Are Peers and Seeds in Torrenting?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
Answers on questions: Biology
- B Biology What is the job of the peripheral nervous system...
- B Biology Which part of the brain is used for hearing understanding language and storing memories?...
- B Biology Which procedure is performed to affix sagging breasts in a more elevated position? ?...
- B Biology Which of these organelles is present in both prokaryotic cells and eukaryotic cells?...
- B Biology When used effectively in presentations, what can visual aids accomplish? check all that apply?...
- B Biology Which ecosystem would most likely require the most time for ecological succession?...
- B Biology Which condition is an inflammation of the tissues surrounding the brain and spinal cord? ?...
- B Biology Which connective tissue is composed of loosely arranged reticular fibers and lymphocytes?...
- B Biology Astudent drew the following flowchart. crushing sizing concentrating dewatering what is the purpose of the process?...
- B Biology At which two events in a woman s life is baraka practiced and why?...
Ответ:
Shes cuter
Explanation: