Emmerson's Effect

Q.

Emerson's enhancement effect leads to the conclusion that

1. Two wavelengths together increase the quantum yield of photosynthesis.

2. Two pigment systems are involved in photosynthesis and they absorb light of different wavelengths.

3. None of the above

4. The pigment systems have a reaction centre surrounded by light harvesting accessory pigment molecules

Q. Red drop occurs in wavelength of

1. 492 nm
2. 535 nm
3. 586 nm
4. 680 nm

Q. Red drop phenomenon affects

1. PS I
2. PS II
3. Accessory pigments
4. Chlorophyll.

Q. The two pigment system theory of photosynthesis was proposed by

1. Hill
2. Arnon
3. Emerson
4. Ruben and Kamen

Q. Which pigment system is inactivated in red drop?

1. None
2. PS-I and PS -II
3. PS-I
4. PS-II

Q.

Emerson’s enhancement effect and red drop have been instrumental in the discovery of

1. Oxidative phosphorylation

2. Photophosphorylation and noncyclic electron transport

3. Two photosystems operating simultaneously

4. Photophosphorylation and cyclic electron transport