Clear flag this question question 25 1 pts what term describes the ratio of the distance the ret travel relative to the distance of the eluting solvent during paper chromatography? retention factor ph solubility wavelength flag this question question 26 1 pts the concentration of carbon dioxide molecules decreases as carbon dioxide is reduced and oxygen is released. true false flag this question question 27 1 pts when performing paper chromatography with plant pigments, which pigment is able to travel relatively far up the paper? beta carotene xanthophyll chlorophyll flag this question question 28 1 pts when carbon dioxide is reduced, the environmental ph rises and the solution becomes more acidic. true false flag this question question 29 1 pts which of the following statements about oxidation-reduction reactions is not true? a reduction reaction is one in which a molecule gains electrons. an oxidation reaction is one in which a molecule gains electrons. cations are molecular ions with positive charges. anions are molecular ions with negative charges. flag this question question 30 1 pts which of the following statements about carotenoids is not true? carotenoids include red, orange, and yellow pigments. carotenoids are sometimes referred to as accessory pigments. beta carotene is the most abundant carotene in plants. carotenoids are categorized into two major divisions: carotenes and beta carotenes.