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 10, Problem 11PIAT
Can green algae replace “black gold”?
Over the past decade, there has been great interest in developing a sustainable and renewable energy source that would displace our dependence on fossil fuels. Photosynthetic organisms, like the microalgae being cultured in the image above, are currently being used to produce bioethanol, biodiesel, and bio-H2. How are photosynthetic organisms being engineered to promote the production of these biofuels?
Aquatic plants and algae carry out photosynthesis using the same light reactions and Calvin cycle as in land plants. Would you expect any of these organisms to also require the C4 pathway? Describe the problem that is solved by the C4 pathway in land plants and if this could ever be an issue in an aquatic environment.
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Students have asked these similar questions
You grow plants under two watering treatments: high water and low water. You examine photosynthetic rates as a function of light for plants in each treatment. Your results are in attached image
A) Which treatment is dashed line B?
a) high watering
b) low watering
B) What abiotic factor is limiting photosynthesis between the open circle and closed circle for treatment B?
a) light
b) water
c) carbon dioxide
C) What process is limiting photosynthesis between the open triangle and closed triangle for treatment A?
a) light-dependent reactions
b) calvin cycle
Atrazine is one of the world’s most used herbicides. It functions by bonding to and disabling a protein in photosystem II. Plants treated with this herbicide die via starvation. Based on this information, what is also true about atrazine-treated plants?
a) Only non-cyclic electron flow is possible.
b) There is not enough ATP created to fuel the Calvin cycle.
c) The plants can switch to C4 pathways.
d) The chloroplast is disabled.
Artificial photosynthesis is being researched to provide:
a)Plastic shrubbery
b)Synthetic fuel
c)Permanent leaves
d)Synthetic proteins
Chapter 10 Solutions
Biological Science (7th Edition)
Ch. 10 - Why is chlorophyll green? a. It absorbs all...Ch. 10 - At what point in photosynthesis is the...Ch. 10 - 5. Why is the chlorophyll in chloroplasts less...Ch. 10 - Describe the three phases of the Calvin cycle and...Ch. 10 - Predict how the following conditions would affect...Ch. 10 - Prob. 10TYPSSCh. 10 -
Can green algae replace “black gold”?
Over the...Ch. 10 - Prob. 12PIATCh. 10 - One of the contributing factors to environmental...
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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
- Please answer all questionsarrow_forwardIn addition to the pigments commonly associated with photosynthesis, a certain photosynthetic species contains two additional pigment types. Which of the following best supports the claim that this species is better adapted to environmental changes than other photosynthetic species are? a) The additional pigments allow the species to outcompete other species for the wavelengths of light commonly used in photosynthesis. b) The increased pigment concentration better facilitates energy production within the cells of the species. c) The pigment combination allows the organism to absorb heat as well as light, making better use of available energy. d) The additional pigments allow the species containing them to harvest energy from wavelengths of light that the other photosynthetic species cannot use.arrow_forward34) During photosynthesis, electron transfer follows which sequence? A) sun -> chlorophyll -> electron transport chain -> ATP i vo B) water -> NADPH -> chlorophyll -> electron transport chain -> chlorophyll C) water -> chlorophyll -> electron transport chain -> chlorophyll -> NADPH Jen D) sugar -> electron transport chain -> oxygen -> ATParrow_forward
- Despite CAM photosynthesis having a comparatively higher water use efficiency relative to C3 and C4 plants, its distribution is restricted primarily to desert succulents. In terms of water use efficiency, explain why CAM photosynthesis has not spread more widely.arrow_forwardWhich of the following correctly sequences the steps of non-cyclic electron transport? a) Chlorophyll molecules absorb UV radiation exciting electrons which flow through photosystem I, returning to the chlorophyll molecules b) Electrons donated from water molecules pass through photosystem I then photosystem II before returning to the chlorophyll molecules, generating ATP in the process c) Water is oxidized by the capture of light energy; these excited electrons are passed through the dark reactions, returning to chlorophyll during the final light reactions d) The ATP and NADPH generated by the reactions of photosystem II and photosystem I are utilized by the Calvin Cycle to build high energy glucose moleculesarrow_forwardGreen sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfide Green sulfur bacteria are able to generate which of the following inorganic product molecules during anoxygenic photosynthesis? elemental sulfur glucose C6H12O6 oxygen hydrogen sulfidearrow_forward
- Why is carbon important to life? What is the role of photosynthesis in the carbon cycle? What is the role of cellular respiration in the carbon cycle? How does the burning of fossil fuels contribute to the carbon cycle? How do death and decomposition contribute to the carbon cycle? Why is nitrogen important to life? How much of the atmosphere is made up of nitrogen gas? Why is N2 (atmospheric nitrogen) not usable by most organisms? What organisms are responsible for nitrogen fixation? How do plants receive the nitrogen that they require? Why are bacteria essential to the carbon and nitrogen cycles?qarrow_forwardIf ribulose bisphosphate were removed from a chloroplast, which of the following statements would BEST describe the immediate result? b)ATP could not be produced in the thylakoid a) CO2 could not enter the Calvin cycle d) Light energy could not be trapped in the grana c) 02 could not enter the Calvin Cyclearrow_forwardWhy might chemosynthetic communities exist only in places like the deep-ocean floor rather than across a wide range of land and sea habitats, the way photosynthesis-based communities are?arrow_forward
- What are the potential advantages of promoting artificial photosynthesis research?arrow_forwardSuppose we set up a system in a lab where plants are automatically injected with all the glucose they need to survive. What part of photosynthesis would the plants no longer need to perform? Group of answer choices a)ETC 1 b)the entire dark reaction c)the entire light reaction d)P700 e)all of itarrow_forwardWhy is only 1 out of 100 chlorophylls attached to the electron transport chain? does the chlorophyll attached to the electron transport chain differ from the others?arrow_forward
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