Question

In 3-5 sentences, explain how the rate of photosynthesis or cellular respiration can be measured using products or reactants.

Answer 1

Answer:   by measuring the carbon dioxide (CO2) consumed during photosynthesis or generated during respiration

Explanation:   The method most commonly used to measure the rate of photosynthesis and cellular respiration is by determining the amount of carbon dioxide (CO2) consumption and production, respectively. Both consumption and production of CO2 can be indirectly measured by using bromothymol, which is a pH indicator. This indicator (bromothymol) turns blue in basic medium and yellow in acidic conditions.

Answer 2

The cellular respiration rate or the photosynthesis rate can be measured through the use of reactants or products by depleting the substrate.

• Photosynthesis simply means how plants are able to manufacture their food. Cellular respiration explains the metabolic reactions which occurs in the cells of organisms.

• Photosynthesis requires water, sunlight, and carbon dioxide as the substrates. Photosynthesis helps in the production of glyceraldehyde-3-phosphate, oxygen and carbohydrate molecules which can then be converted into sugar molecules, glucose, or sucrose.

In conclusion, the depletion of the substrate will enable one to know the amount of carbon dioxide or the quantity of water that has been used.

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