Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three different kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin is responsible for capturing green light, phycocyanin is responsible for capturing orange-red light, and allophycocyanin is 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 Blue Green Red Ⓒ Tomemorris 2020 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. Justify the claim that photosynthetic organisms that live more than 75 feet below the surface of the ocean need phycoerythrin to survive. Provide reasoning that explains this claim.

Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three different kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin is responsible for capturing green light, phycocyanin is responsible for capturing orange-red light, and allophycocyanin is 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 Blue Green Red Ⓒ Tomemorris 2020 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. Justify the claim that photosynthetic organisms that live more than 75 feet below the surface of the ocean need phycoerythrin to survive. Provide reasoning that explains this claim.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter20: The Protists

Section: Chapter Questions

Problem 4CT: Melvin Calvin and Andrew Benson determined the steps in the light-independent reactions of...

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Phycobiliproteins are complex proteins in cyanobacteria that absorb light energy. There are three different kinds of phycobiliprotein molecules used to pass light to chlorophyll: phycoerythrin is responsible for capturing green light, phycocyanin is responsible for capturing orange-red light, and allophycocyanin is 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. (View image attached) 1. Justify the claim that photosynthetic organisms that live more than 75 feet below the surface of the ocean need phycoerythrin to survive. Provide reasoning that explains this claim.
The green color of plants is explained by the wavelengths of light that are reflected, transmitted, and absorbed by the chlorophylls in the thylakoids. Which of the following statements is true? Plants appear green because chlorophylls reflect and transmit yellow and green wavelengths of light, and absorb red and violet-blue wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb yellow and green wavelengths of light. Plants appear green because chlorophylls reflect and transmit red and blue wavelengths of light, and absorb white wavelength of light. Plants appear green because chlorophylls reflect and transmit white wavelength of light, and absorb red and violet-blue wavelengths of light.
In a classic experiment in photosynthesis performed in 1883 by the German botanist Thomas Engelmann, he surrounded a filament of algae with oxygen-requiring bacteria. He then exposed the algal strand to the visible-light spectrum along its length. In which wavelengths of light along the algal strand would you expect the bacteria to cluster. Explain.
If you were looking at this image and then switched to a higher power, what color paramecium would be the only one you see? Explain
A peanut farmer finds that the older leaves of his plants are turning yellow following a long period of wet weather. Suggest a reason why.
An experiment was done to determine how color of light and distance affects photosynthetic activity of the pond weed. Pond weed was placed in a test tube containing a solution of sodium hydrogen carbonate, and had its end cut; light was placed 50 cm away and four colors were tested (clear, red, blue, and green). After placing the light, the pondweed was given a certain amount of time to adjust before counting the bubbles, bubbles were counted for 1, 3, and 5 minutes. Only the bubbles that came out of the cut end was counted to represent the rate of photosynthesis. Below is the tabulated results. What are the possible factors or errors that could have affected clear/white light to have lower photosynthetic activity? In theory this should have the highest rate.
Why does light reflected by the pigment chlorophyll appear green?
What is the key role of light energy in the initial step of thephotosynthetic light reactions?
What is missing from bacteriorhodopsin-based phototrophy that is common to most other types of phototrophy? A) Oa membrane containing the photoreceptor molecules B) O some type of electron donating molecule C) Oa photolysis reaction D) O absorption of photons of light E) Otwo of the above are correct
What properties of photosynthetic pigments allow pigments to absorb light of only certain wavelengths? Select all that apply. Some pigment molecules lack a light-trapping region. Light of any energy level can boost an electron of the pigment molecule to a higher energy level in order to be absorbed. Only light with the correct wavelength to boost an electron of the pigment to a higher energy level is absorbed. All pigment molecules possess a light-trapping region with a special structure that allows electrons to move freely between its atoms.
What is the specific name of the pigment that absorbs energy during the light reactions?
Chlorophyll is the green pigment found in plants. Which of the following statements can be implied regarding chlorophyll? O Chlorophyll does not absorb in the UV region. O Chlorophyll is made up of only C- H, C- C, C- N and C-O single bonds. O Chlorophyll uses the blue and red colors for photosynthesis. O Chlorophyll uses the green color for photosynthesis.