If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of
photosynthesis will the radioactive H and O show up? A) H and O both in glucose
B) H in glucose; O in glucose
C) H in water; O in glucose
D) H in glucose and water; O in O2
E) H in glucose and water; O in water and O2
In green photosynthesizing plants, photolysis occurs during the light-dependent phase. Photolysis is the splitting of the water molecule in the presence of sunlight. The oxygen atom of water molecules forms oxygen gas that is released as a by-product of photosynthesis. Photolysis also releases electrons and protons from water molecules that finally reduce the NADP into NADPH.
The light-independent phase of photosynthesis fixes reduces CO2 into glucose. NADPH serves as reducing power during the light-independent chemical reactions and therefore, the H atoms from water molecules are incorporated into glucose and water molecules formed during light-independent reactions of photosynthesis.
Mean sea level (MSL) (often shortened to sea level) is an average level of the surface of one or more of Earth's bodies of water from which heights such as elevation may be measured.
