The fossil record; what is it? First of all we need to know what a fossil is. A fossil is evidence of a life from years ago which has been preserved in some way. This includes impressions or remains of an organism embedded in strata (Biology Online, 2011). Now that you have an idea of what fossils are, what is the fossil record? The fossil record provides information about the history of life on earth through the placement of fossils within the rock strata. The fossil record also shows how a specific species lived and evolved through a period of geological time (Biology Online, 2009). Fossilisation occurs when an organism is immediately buried by sediment following death. Over many years, sediment builds up and is pressed down on the buried
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After exposure to antibiotics, they could become resistant and stop the benefits of using antibiotics, making the condition worse. Sure you could just start using several other antibiotics, but that would in turn cause that antibiotic to also become resistant; this causing a multi-drug resistant bacteria; also known as a super bug (Jerry Bergman, 2014). Antibacterial resistance is the ability of a microorganism to withstand the effects of an antibiotic (Science Daily, 2014). This antibiotic resistance evolves naturally by natural selection through random mutations. They can also be engineered when an evolutionary stress on the population is applied (Science Daily, 2014). There have been many different strains of bacteria that have evolved a resistance to antibiotics (Understanding Evolution, …show more content…
These plasmids are circular units of DNA which carried a gene for an enzyme which destroys or inactivates the antibiotic (Jerry Bergman, 2014). They can then pass on this trait to their offspring making the bacteria’s future generations fully resistant to antibiotics (Science Daily, 2014). It is becoming more difficult to control the more recent infectious bacteria as they were years ago (Understanding Evolution, 2014). The antibiotic Novobiocin interferes in the natural separation of double stranded DNA during DNA replication or the transcription of mRNA from the interference of a protein called Gyrase. Failure of DNA to separate properly during these processes results in the bacteria not being able to normally divide or produce functional proteins. Without the necessary proteins that help normal cell function, the cell would die. The wide range of biochemical and physiological mechanisms could be the reason behind resistance (Julian Davies and Dorothy Davies, 2014). There is the growing a concern for newly emerging infectious diseases and re-emerging infectious diseases; like whooping cough (Jerry Bergman, 2014).
Antibacterial resistance is more common in an environment like that of a hospital. As antibiotics are dealt with in and administered in a hospital, the chances of the bacterium becoming resistant are high. This is because the bacteria have become resistant in this
After exposure to antibiotics, they could become resistant and stop the benefits of using antibiotics, making the condition worse. Sure you could just start using several other antibiotics, but that would in turn cause that antibiotic to also become resistant; this causing a multi-drug resistant bacteria; also known as a super bug (Jerry Bergman, 2014). Antibacterial resistance is the ability of a microorganism to withstand the effects of an antibiotic (Science Daily, 2014). This antibiotic resistance evolves naturally by natural selection through random mutations. They can also be engineered when an evolutionary stress on the population is applied (Science Daily, 2014). There have been many different strains of bacteria that have evolved a resistance to antibiotics (Understanding Evolution, …show more content…
These plasmids are circular units of DNA which carried a gene for an enzyme which destroys or inactivates the antibiotic (Jerry Bergman, 2014). They can then pass on this trait to their offspring making the bacteria’s future generations fully resistant to antibiotics (Science Daily, 2014). It is becoming more difficult to control the more recent infectious bacteria as they were years ago (Understanding Evolution, 2014). The antibiotic Novobiocin interferes in the natural separation of double stranded DNA during DNA replication or the transcription of mRNA from the interference of a protein called Gyrase. Failure of DNA to separate properly during these processes results in the bacteria not being able to normally divide or produce functional proteins. Without the necessary proteins that help normal cell function, the cell would die. The wide range of biochemical and physiological mechanisms could be the reason behind resistance (Julian Davies and Dorothy Davies, 2014). There is the growing a concern for newly emerging infectious diseases and re-emerging infectious diseases; like whooping cough (Jerry Bergman, 2014).
Antibacterial resistance is more common in an environment like that of a hospital. As antibiotics are dealt with in and administered in a hospital, the chances of the bacterium becoming resistant are high. This is because the bacteria have become resistant in this