Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 21, Problem 16TYU
EVOLUTION LINK Why did the evolution of multicellular organisms such as plants and animals have to be preceded by the evolution of oxygen-producing photosynthesis?
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EVOLUTION CONNECTION Photorespiration can decreasesoybeans’ photosynthetic output by about 50%. Would youexpect this figure to be higher or lower in wild relatives ofsoybeans? Why?
Chapter 21 Solutions
Biology (MindTap Course List)
Ch. 21.1 - Describe the conditions that scientists think...Ch. 21.1 - Compare the prebiotic soup hypothesis with the...Ch. 21.1 - Prob. 1CCh. 21.1 - How does the ironsulfur world hypothesis differ...Ch. 21.2 - Outline the major steps hypothesized to have...Ch. 21.2 - Explain how the evolution of photosynthetic...Ch. 21.2 - Prob. 5LOCh. 21.2 - Prob. 1CCh. 21.2 - Prob. 2CCh. 21.2 - VISUALIZE Draw a simple sketch illustrating the...
Ch. 21.3 - Briefly describe the distinguishing organisms and...Ch. 21.3 - What is the correct order of appearance in the...Ch. 21.3 - Prob. 2CCh. 21.3 - What is the correct order of appearance in the...Ch. 21 - Energy, the absence of molecular oxygen, chemical...Ch. 21 - Prob. 2TYUCh. 21 - Prob. 3TYUCh. 21 - According to the hypothesis of serial...Ch. 21 - Prob. 5TYUCh. 21 - Prob. 6TYUCh. 21 - Prob. 7TYUCh. 21 - The time of greatest evolutionary diversification...Ch. 21 - Prob. 9TYUCh. 21 - The Age of Reptiles corresponds to the (a)...Ch. 21 - Evidence exists that a catastrophic collision...Ch. 21 - Flowering plants and mammals diversified and...Ch. 21 - Prob. 13TYUCh. 21 - EVOLUTION LINK If you were studying how...Ch. 21 - EVOLUTION LINK If living cells were produced in a...Ch. 21 - EVOLUTION LINK Why did the evolution of...Ch. 21 - INTERPRET DATA Evidence for the oldest...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Photosystem II uses sunlight to strip electrons (and protons) away from which of the following substrate molecules (in the chloroplasts of green plants and green algae)? C6H12O6 only C6H12O6, H2O, and CO2 only CO2 only H2O and C6H12O6 only H2O onlyarrow_forwardAnimal life could not have existed if photosynthesis did not evolve. What resources does photosynthesis produce that are essential for animal life? oxygen molecules that contain a great deal of chemical energy (food) Carbon, which composes a large part of a plant's body and is therefore made available for animals. All of the abovearrow_forwardWhat is the origin of oxygen on earth? What would happen to earth’s supply of oxygen if photosynthesis suddenly were to cease?arrow_forward
- Photosynthesis and cellular respiration are found throughout the eukaryotic world. They arecomplementary to each other because they each use products of the other process. Evaluatethe concept that there is a common ancestry for all organisms. What evidence exists that theevolution of photosynthesis and cellular respiration support this concept?arrow_forwardExplain the following observation. When a photosynthetic system is exposed to a brief flash of light, no oxygen is evolved. Only after several bursts of light is oxygen evolved.arrow_forwardBriefly describe the relationship between photosynthesis and respiration in terms of the reactants and products of each chemical reaction. Hypothesize why virtually every theory of mass extinctions on the planet such as the asteroid impact theory involve decreased sunlight as the source. In your explanation, briefly explain the asteroid impact theory. Give some thought to your study in chapter 1 of the levels of organization and how the elimination of plants would affect virtually every ecosystem on the planet, our biosphere.arrow_forward
- Make a mind map of CELLULAR RESPIRATION and PHOTOSYNTHESIS. From this main concept, you will branch out and link to the other concepts.arrow_forwardWhat would the world look like if oxygenic photosynthesis never evolved to what it became today? What does this mean for the processes within photosynthesis? Must use words: H2S, Krebs Cycle, Glycolysis, Electron Transport Chain (ETC).arrow_forwardThe Source of the Oxygen Atoms in Photosynthetic O2 Evolution The overall equation for photosynthetic CO2 fixation is 6CO2 + 6H2O C6H122O6 + 6O2All the O atoms evolved as O2 come from water; none comes from carbon dioxide. But 12 O atoms are evolved as 6 O2, and only 6 O atoms appear as 6 H2O in the equation. Also, 6 CO2 have 12 O Atoms, yet there are only 6 O atoms in C6H12O6. How can you account for these discrepancies? (Hint: Consider the partial reactions of photosynthesis: ATP synthesis, NADP reduction, photolysis of water, and the overall reaction for hexose synthesis in the Calvin-Benson cycle)arrow_forward
- A decrease in entropy occurs during the CO2 uptake phase of the Calvin cycle, as freely moving CO2 molecules become fixed into a carbon skeleton. How can this occur without direct participation by NADPH and/or ATP?arrow_forwardWhy would nature evolve a key enzyme, rubisco, that is so sensitive to oxygen, resulting in photorespiration?arrow_forwardNow imagine that you are pretty wimpy ancestral eukaryotic cell, incapable of either cellular respiration or photosynthesis. Writing in the first person (from the "" perspective), please describe the evolutionary process by which you and your offspring ultimately evolved into the first amazing plant cell, which was capable of BOTH cellular respiration and photosynthesis. In your response, be sure to demonstrate your understanding of the following: the main difference between prokaryotic and eukaryotic cells, the major cellular organelles, natural selection, the basic structure and function of mitochondria and chloroplasts, as well as the types of macromolecules that make up these organelles.arrow_forward
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