How would increases in atmospheric CO2 concentration affect C3 vs. C4 plants (assuming no other changes...
How would increases in atmospheric CO2 concentration affect C3 vs. C4 plants (assuming no other changes in climate)?
Homework Answers
Increases in atmospheric CO2 concentration would increase the photosynthetic efficiency of C3 plants. At higher CO2 concentration, C4 plants do not show a significant increase in carbon fixation, compared to the increase seen in C3 plants. Thus C3 plants would become more efficient in carbon fixation at higher CO2 concentration.
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How would increases in atmospheric CO2 concentration affect C3
vs. C4 plants (assuming no other changes...
Which of these features are characteristic to fixation of CO2 in C3, C4, and both types of plants...
Which of these features are characteristic to fixation of CO2 in C3, C4, and both types of plants? Ribulose 1,5-biphosphate is regenerated in reactions involving tranketolases CO2 is obtained through decarboxylation of oxaloacetate CO2 is fixed in a reaction catalyzed by by rubisco Glycolate is converted into glycine Formation of glyceraldehyde 3-phosphate from 3-phosphoglycerate requires NADPH and ATP Glucose-6-phosphate is synthesized from 3-phosphoglycerate Choose... both C4 C3 Choose... + Choose Choose Check
Which of these features are characteristic to fixation...
Would you expect rising levels of carbon dioxide in the atmosphere to affect C4, C3, or...
Would you expect rising levels of carbon dioxide in the atmosphere to affect C4, C3, or CAM plants differently? Why or why not?
The atmospheric concentration of CO2 is currently 398 ppm. Assuming CO2 is the only substance to...
The atmospheric concentration of CO2 is currently 398 ppm. Assuming CO2 is the only substance to affect rainwater pH, calculate the pH of a raindrop in equilibrium with this concentration of CO2. (Ks[CO2 dissolution] = 5.0 E -2) (Ka1[carbonic acid equilibrium] = 5.0 E -7)
Define what C3 and C4 plants are and then compare how these two types of plants...
Define what C3 and C4 plants are and then compare how these two types of plants synthesize carbohydrates.
Compare and contrast how C4 plants and CAM plants separate the acquisition of CO2 from the...
Compare and contrast how C4
plants and CAM plants separate the acquisition of CO2 from the
production of sugar in the Calvin cycle.
Chapter 10 Question 11 Compare and contrast how C4 plants and CAM plants separate the acquisition of CO2 from the production of sugar in the Calvin cycle. Part A What do they have in common? Check all that apply. They generates an organic acid with four carbons by fixing CO2 to a 3-carbon molecule by rubisco. Both...
Describe why high temperature increases photorespiration in C3 plants (Hint: your answer should involve stomata and...
Describe why high temperature increases photorespiration in C3 plants (Hint: your answer should involve stomata and carbon dioxide). How do C4 plants avoid photorespiration?
Question 186 (1 point) There is an annual rise and fall in atmospheric CO2 concentration. What...
Question 186 (1 point) There is an annual rise and fall in atmospheric CO2 concentration. What is the primary reason for this? Seasonal cycle in contrail formation by jet airplanes Plant growth during the northern hemisphere summer removes atmospheric CO2 for photosynthesis, enough to cause a global reduction Fossil fuel usage increases in winter months Plant growth during the southern hemisphere summer removes atmospheric CO2 for photosynthesis, enough to cause a global reduction Question 187 (1 point) Coring can create...
If it were possible to stop increases global temperature without reducing atmospheric CO2, which of the...
If it were possible to stop increases global temperature without reducing atmospheric CO2, which of the following would be true. A) Species would still have to migrate long distances to stay within their climate envelopes. B) It would reduce ocean acidification. C) Result in a slowing of the methane-permafrost feedback. D) Emissions would slow.
1. Why is C3 photosynthesis inefficient when the concentration of CO2 in a leaf is low?...
1. Why is C3 photosynthesis inefficient when the concentration of CO2 in a leaf is low? 2. How do CAM plants solve the problem of obtaining CO2 for photosynthesis while minimizing water loss? 3. Describe the costs and benefits associated with the different nitrogen products excreted by fish, mammals and birds.
Review the long-term atmospheric CO2 record. What evidence is there that burning of fossil fuels is...
Review the long-term atmospheric CO2 record. What evidence is there that burning of fossil fuels is responsible for recent increases in atmospheric CO2 concentrations? Describe why rapid changes in global temperatures will likely lead to the extinction of large numbers of species? How might changes in global temperatures specifically affect each of The Anolis lizards we studied this semester The Gorongosa ecosystem What are two ways human societies can mitigate these impacts on large scales now?
Which of these features are characteristic to fixation of CO2 in C3, C4, and both types of plants? Ribulose 1,5-biphosphate is regenerated in reactions involving tranketolases CO2 is obtained through decarboxylation of oxaloacetate CO2 is fixed in a reaction catalyzed by by rubisco Glycolate is converted into glycine Formation of glyceraldehyde 3-phosphate from 3-phosphoglycerate requires NADPH and ATP Glucose-6-phosphate is synthesized from 3-phosphoglycerate Choose... both C4 C3 Choose... + Choose Choose Check
Which of these features are characteristic to fixation...
Compare and contrast how C4
plants and CAM plants separate the acquisition of CO2 from the
production of sugar in the Calvin cycle.
Chapter 10 Question 11 Compare and contrast how C4 plants and CAM plants separate the acquisition of CO2 from the production of sugar in the Calvin cycle. Part A What do they have in common? Check all that apply. They generates an organic acid with four carbons by fixing CO2 to a 3-carbon molecule by rubisco. Both...
Question 186 (1 point) There is an annual rise and fall in atmospheric CO2 concentration. What is the primary reason for this? Seasonal cycle in contrail formation by jet airplanes Plant growth during the northern hemisphere summer removes atmospheric CO2 for photosynthesis, enough to cause a global reduction Fossil fuel usage increases in winter months Plant growth during the southern hemisphere summer removes atmospheric CO2 for photosynthesis, enough to cause a global reduction Question 187 (1 point) Coring can create...
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