In a study on marine microbiology, researchers investigated the metabolic activity of microbial communities surrounding deep-sea hydrothermal vents. They measured the concentrations of two key metabolic enzymes, RubisCO and methyl-coenzyme M reductase (MCR), across different marine environments.
The results are shown in the logarithmic bar chart below:
Calculate the order of magnitude by which the concentration of MCR in the sediment is higher than the concentration of RubisCO in the white smoker fluid. Show your working.
A transmission electron micrograph of a spherical archaeal cell isolated from a hydrothermal vent sample is also analyzed. In the image:
Calculate the actual volume of this archaeal cell. Assuming it is perfectly spherical, use the formula for the volume of a sphere:
V=43πr3 V = \frac{4}{3}\pi r^3 V=34πr3Give your answer to four significant figures. Show your working.
