The graph below shows how two different enzymes react with a substrate as the temperature increases. Enzyme A Enzyme B 20 20 15 15 Relative Rate of Enzyme Action Relative Rate of Enzyme Action or 5 o 0 + 0 10 20 30 40 50 60 70 80 0 10 20 30 40 50 60 70 80 Temperature (°C) Temperature (°C) Based on the results, what conclusion can be drawn about the actionof the enzymes as the temperature increases? A. Enzyme A reacts with less substrate than B. B. Enzyme A uses up all the substrate faster than B. C. Enzyme A becomes a better catalyst than B. L D. Enzyme A changes faster than B

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?

Asegment id dna that is artificially created from two or more organism through use of dna enzymes in a laboratory is called a segment of dna that is artificially created from two or more organisms through use of dna enzymes in a laboratory is called

On his trip to the galapagos islands, darwin determined that animals on the islands