Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 7, Problem 13PS
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To explain: The reason that why expert believe that rain forests make little or no net contribution to global
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Photorespiration is the process in which the plants take up the oxygen from the environment and produces carbon dioxide to the environment. The photorespiration process takes place in three organelles of plant cell that are chloroplast, peroxisome and mitochondria. The end product of the photorespiration is formation of carbon dioxide.
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Scientific evidence indicates that theΒ CO2CO2added to the air by the burning of wood and fossil fuels is contributing to global warming, a rise in global temperature. Tropical rain forests are estimated to be responsible for approximately 20% of global photosynthesis, yet the consumption of large amounts of CO2CO2 by living trees is thought to make little or no netcontribution to reduction of global warming. Explain why this might be the case. (HINT: What processes in both living and dead trees produce CO2CO2?)
Tropical rainforest covers only about 3% of earth's surface, but they are estimated to be responsible for more than 20% of global photosynthesis. For this reason, rainforests are often referred to as the βlungs' ' of the planet, providing O2 for life all over earth. However, most experts believe that rainforests make little or no net contribution to global O2 production. From your knowledge of photosynthesis and cellular respiration, can you explain why they might think this? ( Hint: what happens to the energy stored as sugars in the body of a plant when that plant dies or parts of it are eaten by animals?)
Scientific evidence indicates that the CO2 added to the air by the burning of wood and fossil fuels is contributing to global warming, a rise in global temperature. Tropical rain forests are estimated to be responsible for approximately 20% of global photosynthesis, yet the consumption of large amounts of CO2 by living trees is thought to make little or no net contribution to reduction of global warming. Why might this be? (Hint: What processes in both living and dead trees produce CO2?) *
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- We are measuring oxygen production assuming it corresponds to the rate of photosynthesis. Do you think this is a correct assumption? Why or why not?arrow_forwardImagine you are a botanist and you recently discovered a new species of plant in the unexplored regions of the Amazon Rainforest. This plant thrives in the diverse ecosystem of the Amazon and, surprisingly, can survive with limited sunlight. This unique attribute of the plant could have potential impacts on both the field of ecology and various industries. Your primary research focus is now to investigate the efficiency of photosynthesis in this plant, specifically analyzing the structure of the chloroplasts and the distribution of pigments (chlorophyll and carotenoids) utilizing microscopy techniques. Both traditional fluorescence microscopy (FM) and CSM are capable of identifying the distribution of pigments (chlorophyll and carotenoids). How does the process of stimulating fluorescence and detection vary between these two microscopy techniques? Given these differences, which method would be more likely to yield superior results for your research? Please provide your reasons, takingβ¦arrow_forwardWhen discussing why the rate of photosynthesis did not increase at higher light intensities, the investigator mentioned the possibility that high light intensities could damage chlorophyll, which would result in a decrease in oxygen production. Which of the following accurately explains the role of chlorophyll in oxygen production during photosynthesis and why damage to chlorophyll would results in lower oxygen production? Select one or more: a. Chlorophyll participates in carbon fixation during the Calvin Cycle.Β During this process, oxygen molecules are formed. b. Chlorophyll captures energy from sunlight and releases high energy electrons that enter the electron transport chain in the Calvin Cycle.Β During this process, oxygen molecules are formed. c. Chlorophyll participates in carbon fixation during the light reactions.Β During this process, oxygen molecules are formed. d. Chlorophyll captures energy from sunlight and releases high energy electrons that enter the electronβ¦arrow_forward
- Scientific evidence indicates that the CO2 added to the air by the burning of wood and fossil fuels is contributing to global warming, a rise in global temperature. Tropical rain forests are estimated to be responsible for approximately 20% of global photosynthesis, yet the consumption of large amounts of CO2 by living trees is thought to make little or no net contribution to reduction of global warming.arrow_forwardIt is possible that you recently discovered a new species of plant in the Amazon Rainforest. It is surprising that this plant can survive with limited sunlight in the diverse ecosystem of the Amazon. The plants unique quality has the potential to have a significant impact on both the realm of ecology and diverse sectors. Your primary research focus is now to investigate the efficiency ofΒ photosynthesis in this plant, specifically analyzing the structure of the chloroplasts andΒ the distribution of pigments (chlorophyll and carotenoids) utilizing microscopyΒ techniques. Which method is better for looking at the structure of chloroplasts in this plant, confocal scanning microscopy (CSM) or transmission electron microscopy (TEM). Consider the principles, advantages, and limitations of each method and align them with the goals of your research to justify your answer.arrow_forwardCarnivores, such as lions, are dependent on photosynthesis to survive. Considering theorganisms and processes involved in carrying out photosynthesis, provide the reasoning toexplain why this is the case.arrow_forward
- Generally, increasing the concentration of carbon dioxide increases the rate of photosynthesis. What conditions could prevent this effect?arrow_forwardIt is possible that you recently discovered a new species of plant in the Amazon Rainforest. It is surprising that this plant can survive with limited sunlight in the diverse ecosystem of the Amazon. The plants unique quality has the potential to have a significant impact on both the realm of ecology and diverse sectors.Β Your main goal is now to investigate the efficiency ofΒ photosynthesis in this plant, specifically analyzing the structure of the chloroplasts andΒ the distribution of pigments (chlorophyll and carotenoids) utilizing microscopyΒ techniques. Both conventional fluorescence microscopy (FM) and CSM possess the capability to identify the distribution of pigments, specifically chlorophyll and carotenoids. How does the process of stimulating fluorescence and detecting fluorescence differ between these two microscopy techniques? Given these disparities, which approach is more likely to yield superior outcomes for your research? Could you please explain, taking into considerationβ¦arrow_forwardThe chlorophyll in photosynthesis is used for: Β Β Β Β Β Β Β Β I.Β Β Β Absorbing light Β Β Β Β Β Β II.Β Β Β Breaking down water molecule Β Β Β Β Β III.Β Β Β No function Β Β Β Β Β IV.Β Β Β Reduction of CO2arrow_forward
- Photosynthesis is considered as a process supporting all life on Earth.arrow_forwardHow will the increase in atmospheric CO2 impact photosynthesis? Β How will this impact life on earth (Human or otherwise)?arrow_forwardWhy does the boundary layer surrounding a photosynthetic organism make it more difficult to exchange CO2 and O2?arrow_forward
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Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY