E. coli is a species of bacteria that causes many different infections in humans. Certain E. coli strains have developed resista
nce to antibiotics, making infections with these strains difficult to treat. How do bacteria such as E. coli, which reproduce asexually, gain new traits such as antibiotic resistance? A. by adapting to changes in environmental conditions without undergoing changes in their DNA
B. by mutating their DNA in response to environmental conditions to gain beneficial traits
C. by producing offspring with new gene assortments from genetic recombination, which increases diversity in a population
D. by undergoing spontaneous mutations when they replicate, which increases genetic variation in a population
Antibiotic resistance in bacteria develops in response to the environment in which the bacteria survives.
The antimicrobial resistance trait is acquired by any species of bacteria through one of the two ways that are either by making changes in their DNA sequences or through horizontal gene transfer mechanisms.
In the given E. coli gained the trait to develop resistance against antibiotic by making changes in their DNA as once the gene is altered or mutated, the trait can be passed on to the offsprings.
Photosynthesis is important in taking carbon from the atmosphere . This is why forest are great carbon sinks because they sequester carbon from the atmosphere. Cellular respiration, on the other hand, is the opposite of photosynthesis. It increases the levels of carbon in the atmosphere by breaking down carbon-based foods to carbon dioxide.
Nucleus can be defined as a large organelle found in the Eukaryotic cells and it is also know as the cell's command center,thus it controls the activity of the cells
Explanation:
The answer to the above question is (c )nucleus. During the cell cycle the nucleus of the cell mediates the replication of the of the DNA and controls the gene expression.
The nucleus contains a structure which is known as nucleolus and which is made up of protein and ribonucleic acid(RNA)
