Puzzle 3: The Historical & Pigment Review

2. : One of the functions of accessory pigments is to protect chlorophyll a from this destructive process
5. : Provided evidence for production of glucose when plants grow; noted it is usually stored as starch
9. : The region of the visible spectrum (green) where chlorophyll a shows minimum absorption
10. : The spectrum that corresponds closely to the absorption spectrum of chlorophyll a
12. : The bright or blue-green pigment visible in the chromatogram; the major pigment
14. : The fluid-filled matrix where enzymatic reactions synthesise sugar
16. : Along with red, this region of the spectrum shows the highest rate of photosynthesis
17. : A paper strip separation showing that leaf colour is due to four pigments, not one
19. : He showed that it is only the green part of the plants that could release oxygen
20. : Microbiologist who demonstrated that photosynthesis is essentially a light-dependent reaction using purple and green sulphur bacteria

1. : Yellow pigments found in leaves
3. : Scientist who hypothesized that plants restore to the air whatever breathing animals and burning candles remove (1770)
4. : In green plants, H2O is the hydrogen donor and is oxidised to O2; in bacteria, H2S is the hydrogen donor and is ___ to sulphur
6. : The specific green alga placed in a suspension of aerobic bacteria during the first action spectrum experiment
7. : Yellow to yellow-orange pigments that protect chlorophyll a from photo-oxidation
8. : The yellow-green pigment that acts as an accessory pigment
11. : Membranous structures in the stroma responsible for trapping light energy
13. : Used a prism to split light into its spectral components and then illuminated a green alga
15. : Graph showing the amount of light absorbed at different wavelengths
18. : Accessory pigments absorb light and transfer the energy to chlorophyll a; they act as a ___ pigment