X-ray diffraction data collected by rosalind franklin and maurice wilkins watson and crick solve the structure of dna. which aspect of the structure of dna did the data them solve?

a) the double stranded nature of the helix and its dimensions
b) the ratio of bases
c) the presence of deoxyribose sugars
d) the presence of hydrogen bonds between bases

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

Ras is a g-protein that is activated when a growth factor attaches to egfr. its activation results in the replacement of a gdp molecule with a gtp molecule, thus allowing a signal transduction pathway to be activated. considering the signal pathway illustrated on this page, what is one potential outcome of a mutation in the ras gene that leads to ras protein hyperactivity. be specific.

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?