A spectrophotometer is used to measure:
Correct answer: D. Absorption of different wavelengths
- A. Absorption of CO2
- B. Absorption of O2
- C. Reflection of pigments
- D. Absorption of different wavelengths
Explanation
A spectrophotometer measures the absorption of various wavelengths of light. This device shines light through a sample and assesses how much of each wavelength is absorbed. The resulting absorption pattern can provide valuable information about the sample's composition, concentration, and other properties. The other options are incorrect because they do not relate to the primary function of a spectrophotometer, which is to measure light absorption, not gas absorption or light reflection.
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Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
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