Antibiotics are prescribed to kill off disease causing bacteria. An increase in the overuse and improper use of antibiotics has led to the evolution of antibiotic resistant
bacteria. New strains of diseases have become increasingly more difficult to treat as
entire populations of bacteria are no longer affected by antibiotics. Which statement
best describes how these new strains of bacteria have evolved?

Select all the correct answers. lactobacillus is a bacteria that live inside humans. these bacteria live on the nutrients from our bodies. they to keep our gut clean and healthy. s. typhi is a bacteria that enter our bodies through contaminated food. this bacteria causes infections in the body. based on this information, which two statements about the association between these bacteria and humans are true? a. lactobacillus shares a parasitic relationship with humans. b. s .typhi shares a parasitic relationship with humans. c. both lactobacillus and s. typhi share a parasitic relationship with humans. d. both lactobacillus and s. typhi share a mutualistic relationship with humans. e. lactobacillus shares a mutualistic relationship with humans, and s. typhi shares a parasitic relationship multiply chrse

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.