Jakarta post: The research, published in the proceedings of the Royal Society B, has investigated
Jakarta post:
The research, published in the proceedings of the Royal Society B, has investigated the bacterium in eleven individuals ranging from as far back as the Bronze Age up to the twentieth century. Samples have been taken from individuals in Europe and in both pre and post-colonial America. The oldest case study was that of an individual from 1200 BC, found in the Burial cave in Montainsell (Licidia, Catalonia)
The study found that ancient genetic material from principle Bacterium, streptococcus mutant, causes dental carries. The mutant has increased its genetic material change overtime. This is possibly due to the coincidence of dietary changes that are linked with the expansion of humanity.
Similar study conducted by researchers fromthe University Autonma dc Barcelona (UAB) and the laboratoria Nasional de Genomica para la Bie diversided, Mexico, put the gcnetic material in order and found that genetic diversity has been produced, especially in the fragment of a gene that codiies a virulence factor known as dextranase.
(1) How could the ancient genetic expand to humanity?
A. Through coincidental links with human’s dietary changes.
B. Through the change in its genetic material.
C. Through an increase in genetic diversity.
D. Through the fragment of a gene.
E. Through the investigated bacterium of eleven individuals.
Pembahasan:
Dijelaskan dalam kalimat terakhir paragraf 2:
This is possibly due to the coincidence of dietary changes that are linked with the expansion of humanity.
Jawaban: A
(2) What is the first paragraph about?
A. The research genetic diversity.
B. The investigation of dental carries.
C. The investigation of Bacterium.
D. The samples of individuals from pre-colonial Europe.
E. The investigation of the bacterium in eleven individuals.
Pembahasan:
Paragraf pertama adalah tentang “The investigation of the bacterium in eleven individuals”.
Jawaban: E
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