An mRNA macromolecule transcribes genetic code from a DNA macromolecule in a cell’s nucleus and carries the code into the cytoplasm to synthesize a protein. Which of the following statements is true about the nucleotides in the mRNA macromolecule and the DNA macromolecule? The number of uracil bases in the mRNA is the same as the number of cytosine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of thymine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of adenine bases on the strand of DNA that it transcribed. The number of uracil bases in the mRNA is the same as the number of guanine bases on the strand of DNA that it transcribed.

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.