LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Offers a large surface area for the light-dependent reaction.
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Possesses various substrates, rubisco and other enzymes to catalyse the reactions of the Calvin cycle.
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Has a very low pH due to accumulation of protons during chemiosmosis.
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Embeds ETC, photosystems and ATP synthase required for the light-dependent reaction.
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Detailed explanation-1: -RuBisCO’s primary function is photosynthesis and photorespiration. It catalyzes the first step in the C3 pathway or Calvin cycle, namely the carboxylation of RuBP. It leads to the production of two 3-PGA molecules.
Detailed explanation-2: -Interior to the chloroplast’s inner membrane and surrounding the thylakoids is a fluid called the stroma. The light-independent reactions of photosynthesis take place within the stroma. It contains enzymes that work with ATP and NADPH to “fix” carbon from carbon dioxide into molecules that can be used to build glucose.
Detailed explanation-3: -15.2. 15.1, the key step of the Calvin cycle is catalyzed by the enzyme ribulose bisphosphate carboxylase, which fixes a CO2 molecule onto a molecule of ribulose-1, 5-diphosphate (RuBP), resulting in two molecules of glyceric acid-3-phosphate (3PG).
Detailed explanation-4: -Rubisco catalyses the primary photosynthetic CO2 reduction reaction, the fixation of atmospheric CO2 to ribulose-1, 5-bisphosphate (RuBP) to form two molecules of 3-phosphoglycerate (3PGA), which is subsequently used to build the organic molecules of life.