11. Experiments by Robert Emerson in the 1950s showed that: a. all the substance

Question

11. Experiments by Robert Emerson in the 1950s showed that: a. all the substance of a plant is provided by water and not the soil. b. photosynthesis has both a light-dependent stage and a light-independent stage. c. isolated chloroplasts are able to produce O2 in the absence of CO2. d. at least 8 photons are required to produce 1 molecule of oxygen in photosynthesis could support the breathing of animals. 12. A photosystem is a. a collection of hydrogen-pumping proteins in the thylakoid membrane b. an assembly of proteins and photosynthetic pigments in the thylakoid membrane. c. a series of electron-accepting proteins arranged in the thylakoid membrane. d. a photosynthetic enzyme that is found only in bacteria. e. a protein complex involved in chlorophyll synthesis in the chloroplast.

Explanation / Answer

11. Experiments by Robert Emerson in the 1950s showed that photosynthesis has both a light-dependent stage and a light independent stage.

12. A photosystem is a protein complex involved in chlorophyll synthesis in the chloroplast.

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