Which diagram shows all of the numbers correctly placed in the given sets? P= {irrational numbers)
Q = {rational numbers}
R= {real numbers}

2points what do bacteria have in common with the cells of other living organisms?

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.