Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 37, Problem 6TYU
Summary Introduction
To review:
Whether the statement that phytochromes are “shade detectors,” while phototropins are “sunlight detectors” is valid or not.
Introduction:
Photoreceptors are the light-sensitive proteins found in the plants that absorb different light waves. Phytochromes and phototropins are the types of photoreceptors.
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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.
Chapter 37 Solutions
Biological Science (7th Edition)
Ch. 37 - Prob. 2TYKCh. 37 - Prob. 3TYKCh. 37 - 4. What evidence suggests that ABA from roots can...Ch. 37 - Why was it logical to predict that amyloplasts...Ch. 37 - Prob. 6TYUCh. 37 - To explore how hormones function, researchers have...Ch. 37 - Prob. 8TYUCh. 37 - Prob. 9TYPSSCh. 37 - Prob. 10TYPSSCh. 37 - Prob. 11PIAT
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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. 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…arrow_forwardDiscuss other morphological differences between sunny and shady set-ups of mung bean in relation to phototropic response of plants. Characteristics sunny shaded Leaf color Lime Green Pale Green Direction of Growth Grows upward towards the direction of sunlight Oriented in the direction of the light but growth is bent downwardarrow_forwardTRUE OR FALSE Rice varieties with erectophile leaves are more susceptible to photorespiration compared to those with planophile leaves.arrow_forward
- Phytochrome, plays an important role in flowering in many plants. It can also be used to determine when lettuce seeds germinate (shown in the figure below Which scenario(s) above produce large amounts of the active form of phytochrome? A B A & C B & Darrow_forwardPhycobiliproteins 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 Blue Green Red O 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. In addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment…arrow_forwardIt is the term referring to the characteristic leaf structure of C4 plants that enables them to outperform C3 plants in an environment that has high O2 concentration and/or temperature. Unlike C3 and CAM plants, C4 plants, such as corn and sugarcane, have leaves with vascular bundles that are surrounded by a chloroplast-rich vascular bundle sheath, which is further surrounded by the spongy mesophyll.arrow_forward
- TRUE OR FALSE Rice varieties with erectophile leaves are more susceptible to photo respiration compared to those with planophile leaves.arrow_forwardWould it be wrong to call plants obtained through micro-propagation as ‘clones’? Comment. Please provide an explanation.arrow_forwardWould a red:FR light value of 0.14 1:7 be expected of a plant in shaded light beneath a leaf canopy and if we assume that ratio would we expect that our pfr per total phytochromes would be more than that in direct sunlight?arrow_forward
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