Pigments

Question 1

Visible light spectrum

Answer 1

380-750nm

Question 2

Energy is ______ proportional to wavelength

Answer 2

Inversely; the shorter the wavelength the greater energy potential of each photon. As light meets matter it is reflected, transmitted, or absorbed by pigments.

Question 3

What is the essential pigment?

Answer 3

Chl a; can particulate directly in the light reaction to drive the conversion of solar energy to chemical.
-Accessory pigments absorb light and transfer that energy to chl a to initiate light rxn.

Question 4

In water, ___________ is high leading to scattering of light.

Answer 4

density of molecules

Question 5

Lower wavelengths have higher energy, ________ is inversely proportional.

Answer 5

scattering

Question 6

Cyanobacterial pigments

Answer 6

• Chl a
• Phycobiliproteins-Phycocyanin, allophycocyanin, phycoerythrocyanin
• Some contain chl b and d and some carotenoids

Question 7

Pigments of Chlorophyta

Answer 7

Chl a

Chl b

Question 8

Pigments of Glaucophyta

Answer 8

Chl a

Phycobiliproteins: Ex-Phycocyanin

Question 9

Pigments of Rhodophyta

Answer 9

Chl a
Phycobiliproteins: Ex: Phycoerythrin, phycocyanin,
Carotenoids: Ex: Zeaxanthin