Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin-responsible for capturing green light, phycocyanin-responsible for capturing orange-red light, and allophycocyanin-responsible for capturing red light. Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions. 7.5m UV 15.0m 22.5m 30.0m. 37.5m O Tomemorris 2020 Blue Green Red Creative Commons Attribution-Share Alike 4.0 International license. IR 25ft 50ft 75ft 100ft 125ft a. Explain the relationship between chlorophyll absorption and wavelength. b. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. Justify the claim that this species is better adapted to environmental changes than the cyanobacteria described above. Provide reasoning that explains this claim.
Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin-responsible for capturing green light, phycocyanin-responsible for capturing orange-red light, and allophycocyanin-responsible for capturing red light. Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions. 7.5m UV 15.0m 22.5m 30.0m. 37.5m O Tomemorris 2020 Blue Green Red Creative Commons Attribution-Share Alike 4.0 International license. IR 25ft 50ft 75ft 100ft 125ft a. Explain the relationship between chlorophyll absorption and wavelength. b. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. Justify the claim that this species is better adapted to environmental changes than the cyanobacteria described above. Provide reasoning that explains this claim.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin—responsible for capturing green light, phycocyanin—responsible for capturing orange-red light, and allophycocyanin—responsible for capturing red light.
Since light can only penetrate to certain depths in oceans, phycobiliproteins capture the light available and pass it through various pathways of phycobiliproteins until the emitted light is red, which is absorbed by chlorophyll. Use the figure below to answer the following questions.
**Image Description:**
The image is a graph showing the absorption of different wavelengths of light at varying ocean depths. The horizontal axis represents the light spectrum from UV, blue, green, red, to IR. The vertical axis indicates depth, ranging from 7.5 meters (25 feet) to 37.5 meters (125 feet). The graph displays a gradient of colors, showing how different wavelengths penetrate the water.
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**Questions:**
a. **Explain** the relationship between chlorophyll absorption and wavelength.
b. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. **Justify** the claim that this species is better adapted to environmental changes than the cyanobacteria described above. Provide reasoning that **explains** this claim.
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