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33 Three batches of radish seeds, each with a starting dry weight of 1.50g were placed in the conditions noted in the photo below. After 1 week the material in the dishes was dried and reweighed as indicated. Which of the following processes contributed the most to the increased biomass of the light, water treatment? Absorption of mineral nutrients from the soil by the roots. b. Absorption of organic substances from the soil by the roots Absorption of CO2 gas from the air by the leaves. d. Absorption of H20 from the soil by the roots. Absorption of solar radiation by the leaves. LIGHT, WATER, 3.28g LIGHT NO WATER. 1 48g NO LIGHT, WATER, 1.17g 34 Where are the enzymes of the Krebs Cycle located? cytoplasm. b. outer mitochondrial membrane mitochondrial matrix. d. inner mitochondrial membrane inter-membrane space of mitochondrion 35. Why must one refer to a "net gain" of 2 ATP's per molecule of glucose undergoing glycolysis when 4 ATP's are actually produced? in order to account for the 2 ATP's used as activation energy b. because ATP's produced by substrate-level phosphorylation are less energized than those produced by oxidative phosphorylation in order to account for the 2 NAD s usedExplanation / Answer
33. With conditions of light and no water, the seed did not sprout.So it cannot undergo photosynthesis or cellular respiration. With conditions of both water and light ,seeds sprout as photosynthesis takes place and also cellular respiration takes place. CO2 and water are taken into the plant.The plant uses up the molecules along with light to create glucose, which increaes biomass.So option C would suit.
34. The enzymes of Krebs cycle are situated in the mitochondrial matrix.Option C is the answer.
35.Option a is suitable. There are 2 ATPs used up in the steps[ from Conversion of Glucose to Glucose 6 phosphate and in the conversion of Fructose 6 phosphate to Fructose 1,6 - bisphosphate]. Later in further steps 4 ATPs are produced. Total yield of ATP would be to subtract the used up ATP from the produced ATP , thus giving 2 ATP as the yield in Glycolysis.
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