The first action spectrum was obtained by:
Correct answer: A. T.W.Engleman
- A. T.W.Engleman
- B. Julius von Sachs
- C. Gregor Mendel
- D. Robert Koch
Explanation
The first action spectrum, which shows the relationship between the rate of a biological process (like photosynthesis) and the wavelength of light, was obtained by Theodor W. Engelmann. He used a clever experimental setup involving algae, light dispersion, and oxygen-sensitive bacteria to map which wavelengths were most effective in driving photosynthesis. The other figures-Julius von Sachs, Robert Koch, and Gregor Mendel-made groundbreaking contributions in plant physiology, microbiology, and genetics, respectively, but did not produce the first action spectrum.
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About Bioenergetics
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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