Match these items. 1 . DNA molecule the rate of doing work 2 . power the location of metals on the Periodic Table 3 . blue an important function of the small intestine 4 . left side of the stairs organisms that fix nitrogen on legumes 5 . absorbs food the complex chemical that transmits traits 6 . stomata the loudness of sound 7 . oxygen a liquid waste eliminated from the blood 8 . bacteria a response to light 9 . photosphere the visible surface of the sun 10 . equinox the color of the hottest stars 11 . urine a by-product of photosynthesis 12 . phototropism the name of the plant tubes that transport food 13 . phloem cell division in which the new cells have the same number of chromosomes as the parent cell 14 . amplitude the time of the year when the days and nights are equal 15 . mitosis openings on the underside of a leaf