Biology, 25.02.2021 18:00 xbeatdroperzx
Antibiotics can be used to kill the specific pathogenic bacterium, Mycobacterium tuberculosis, that causes tuberculosis. The appearance of antibiotic-resistant strains has made it more difficult to cure M. tuberculosis infections. These antibiotic-resistant bacteria survive and pass on the genes to their offspring, making the resistant phenotype more common in the population DNA analysis indicates that the genes for antibiotic resistance are not normally present in bacterial chromosomal DNA
Which of the following statements best explains how the genes for antibiotic resistance can be transmitted between bacteria without the exchange of bacterial chromosomal DNA?
a The antibiotic-resistant bacteria release a hormone that signals neighboring bacteria to become resistant
b. The genes for antibiotic resistance are located on a plasmid that can be passed to neighboring bacteria.
c. The antibiotic-resistant bacteria are the result of bacteria that specifically modify their own chromosomal DNA to neutralize the antibiotics
d. The antibiotic alters the bacterial genome of each bacterium, which results in an antibiotic-resistant population
How do you know your answer is the correct one?(Required)
Answers: 1
Biology, 21.06.2019 16:50
Which of the following would be least likely to support the modern concept of biological evolution? ( 2 points) a)different species of organisms with similar bone patterns b)different species of organisms with similar reproductive rates species in c)different domains with similar metabolic pathways species in d)different kingdoms with similar cellular structures.
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Biology, 21.06.2019 20:50
Dna has unique properties that allow it to accurately retain genetic information, even after multiple rounds of replication. one aspect of dna that allows it to accurately store genetic information is the base pairing from chargaff\'s first rule of the four nucleotide bases. if the c content of a dna molecule is 22%, what are the percentages of the remaining bases?
Answers: 1
Biology, 22.06.2019 05:00
What is a group of organisms that are closely related and share similar characteristics
Answers: 1
Antibiotics can be used to kill the specific pathogenic bacterium, Mycobacterium tuberculosis, that...
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