Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Chapter 10.3, Problem 4CC
DRAW IT → Redraw the cycle in Figure 10.19 using numerals to indicate the numbers of carbons instead of gray balls, multiplying at each step to ensure that you have accounted for all the carbons. In what forms do the carbon atoms enter and leave the cycle?
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1. You decide to perform step three of the green pathway first. You start with
1.81 g of the starting material. After the reaction is complete, you weigh 1.18
g of the product, which is a dry solid. What is the percent yield for the third
step of the green pathway? Show all of your work!
Of course, one cannot stick a piece of tape to each carbon atom in the actual glucosemolecule. But one can do the next best thing: use radioisotopes to trace themovement of various atoms. Specifically, because carbon dioxide is a gas, usingradioactive C-14 allows for the easy detection of the 14CO2 that is given off.Suppose you introduce one glucose molecule that has had all of its carbons radioactivelylabeled. Suppose further that each step in glycolysis and in the citric acid cycle takes oneminute to complete (so glycolysis, for instance, takes ten minutes to complete, theconversion to acetyl CoA takes one minute, and the citric acid cycle takes eight minutes).Draw a plot of time (x-axis) versus radioactivity detected by a gas sensor (y-axis). Labelthe x-axis with enough time increments so it is clear at what minute the radioactivitywas detected. Use differing peak heights to give an indication of the amount ofradioactivity detected at that point.
The equation for photosynthesis is 6CO2 + 6H2O + Sunlight --> C6H12O6 + 6O2. Explain the role of each of the products (left side of the arrow) and explain where the products (right side of the arrow) came from.
Chapter 10 Solutions
Campbell Biology: Custom Edition
Ch. 10.1 - Prob. 1CCCh. 10.1 - Explain how the use of an oxygen isotope helped...Ch. 10.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 10.2 - What color of light is least effective in driving...Ch. 10.2 - In the light reactions, what is the initial...Ch. 10.2 - Prob. 3CCCh. 10.3 - To synthesize one glucose molecule, the Calvin...Ch. 10.3 - How are the large numbers of ATP and NADPH...Ch. 10.3 - Prob. 3CCCh. 10.3 - DRAW IT Redraw the cycle in Figure 10.19 using...
Ch. 10.3 - Prob. 5CCCh. 10.4 - Describe how photorespiration lowers...Ch. 10.4 - The presence of only PS I, not PS II, in the...Ch. 10.4 - MAKE CONNECTIONS Refer to the discussion of ocean...Ch. 10.4 - WHAT IF? How would you expect the relative...Ch. 10.5 - MAKE CONNECTIONS Can plants use the sugar they...Ch. 10 - Compare the roles of CO2 and H2O in cellular...Ch. 10 - The absorption spectrum of chlorophyll a differs...Ch. 10 - Prob. 10.3CRCh. 10 - Why are C4 and CAM photosynthesis more...Ch. 10 - Explain how all life depends on photosynthsis.Ch. 10 - The light reactions of photosynthesis supply the...Ch. 10 - Which of the following sequences correctly...Ch. 10 - How is photosynthesis similar in C4 plants and CAM...Ch. 10 - Prob. 4TYUCh. 10 - Prob. 5TYUCh. 10 - In mechanism, photophosphorylation is most similar...Ch. 10 - Prob. 7TYUCh. 10 - Prob. 8TYUCh. 10 - EVOLUTION CONNECTION Photorespiration can decrease...Ch. 10 - SCIENTIFIC INQUIRY MAKE CONNECTIONS The following...Ch. 10 - WRITE ABOUT A THEME: ENERGY AND MATTER Life is...Ch. 10 - SYNTHESIZE YOUR KNOWLEDGE Watennelon snow in...
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- on k. 7.2 Natural carbon recycling ADVANCED STANDARD Science understanding FOUNDATION bushfire (n) a forest fire that is out of contral Carbon is the basis of all life on Earth. There is a fixed amount of carbon on Earth and this carbon is continuously recycled and reuscu. It takes carbon about 100 million vears to complete one cycle through the lithosphere (rock, soil, land), bydrosphere (oceans, lakes, rivers), the atmosphere and the biosphere. controlled burn In) a supervised fire Carbon stores HINT The Earth's four major carbon stores (or sinks) are-the atmosphere, occans, terrestrial ecosystems (on land) and Earth's crust. 1 Gigatonne = 10 tonne = 10" kg Table 7.2.1 Earth's principal carbon stores in gigatonnes (Gt) Stores of carbon Gigatonnes (Gt) Gigatonnes (Gt) Stores of carbon marine sediments and 3000 sedimentary rocks 66000 000-100 000 000 coal deep oceans soils and organic matter 1600 40 000 surface oceans 1000 oil and gas 300 vegetation 540-610 the atmosphere 750 Plants…arrow_forwardFrom one molecule of glucose, calculate the number of carbon atoms that are lost in Kreb’s cycle. Where do they go? How many turns of Kreb’s cycle are needed to process one glucose molecule?arrow_forwardSucrose is a carbohydrate produced naturally in plants. It is composed of glucose and fructose. Carbohydrates are made by plants which derive their food resources from photosynthesis. What molecules used in photosynthesis are rearranged to produce carbohydrates? Choose ALL that apply.arrow_forward
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