Metabolism is a measure of the hydrogen ion concentration in a solution the energy required to start a chemical reaction all of the chemical reactions in an organism required to sustain life a chemical reaction in which the substrates trade constituent parts

Select the correct answer from each drop-down menu. during the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction