Question

which of the following scientific questions could be investigated using a similar experimental setup?
a.
how much carbon dioxide is required by a plant cell to produce one molecule of glucose?

b.
what wavelength of light best activates electron transfer reactions in chloroplasts?

c.
which molecule in chloroplasts accepts activated electrons from dcpip during photosynthesis?

d.
are the same genes that are expressed in chloroplasts also expressed in mitochondria?

Explanation:

To determine the answer, we analyze each option:

• Option A: Investigating carbon dioxide for glucose production involves metabolic pathways and would require measuring gas exchange or product formation over time, not a setup focused on light wavelengths.
• Option B: The question about the wavelength of light activating electron transfer in chloroplasts relates to the light - dependent reactions of photosynthesis. An experimental setup to test this would involve varying light wavelengths and measuring electron transfer (e.g., using dyes like DCPIP to detect electron flow). This is similar to setups used to study light - related aspects of photosynthesis.
• Option C: Identifying the molecule that accepts electrons from DCPIP would require biochemical analysis (like chromatography or spectroscopy to identify the molecule), not a setup for testing light wavelengths.
• Option D: Comparing gene expression in chloroplasts and mitochondria involves molecular biology techniques like PCR or RNA sequencing, which is completely different from a setup for studying light - related photosynthetic processes.

Answer:

B. What wavelength of light best activates electron transfer reactions in chloroplasts?