A water molecule is polar because it has what?

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

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.