Microbiology: An Evolving Science (Fourth Edition)
4th Edition
ISBN: 9780393615098
Author: John W. Foster, Joan L. Slonczewski
Publisher: W. W. Norton & Company
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Chapter 3, Problem 3TQ
Summary Introduction
To review:
The two distinct ways used by aquatic prototroph for maximizing light access through subcellular structures also, mention the ways used by aerobes for remaining close to the surface, with access to air.
Introduction:
Prototrophs are the organisms that use sunlight along with several inorganic materials as their source of energy. It is one of the classifications of autotrophs that synthesize their food by using sunlight. Aquatic phototrophs are the phototrophic organisms that are present in water like sea, ocean, river, and lakes.
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If you could measure pH within a chloroplast, where would it be lowest?
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Compare and contrast light-dependent reactions and the Electron Transport Chain of cellular respiration.
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Microbiology: An Evolving Science (Fourth Edition)
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- In a photosynthetic investigation, a student measured the following pH of the stroma and the inner thylakoid compartments of spinach leaf cells at the conclusion of the experiment. Source of Fluid pH (mean) Standard Error of Mean (SEM) Stroma 8.2 0.75 Inner compartment of thylakoid 5.6 0.35 Describe the stages of photosynthesis. Explain the need for a constant supply of inorganic carbon dioxide.arrow_forwardExplain why the arrangements of pigments in the chlorosome an efficient way of absorbing light at low intensities?arrow_forwardExplain briefly how an increase in light intensity can affect the rate of photosynthesisarrow_forward
- A student measures the pH of the stroma and the inner thylakoid compartments of spinach leaf cells. His results are shown in the following table. Explain these results and the difference in pH, using your understanding of the Photosynthetic process.arrow_forwardCan ATP production take place in chloroplasts in the absence of light? Give the reason for your answerarrow_forwardFigure 8.6 On a hot, dry day, plants close their stomata to conserve water. What impact will this have on photosynthesis?arrow_forward
- If you landed on a planet where all of the plants had purple leaves, what wavelengths of light would you expect to be least effective for photosynthesis? explain your reasoning.arrow_forwardDiscuss in detail photorespiration in plants.arrow_forward. Plants can harvest the energy from light, but also rely on light as a stimulus to control other processes. Briefly describe one example of how plants use light for something other than photosynthesis, including the processes, structures and/or molecules involved.arrow_forward
- What Kinds of Photosystems Are Used to CaptureLight Energy?arrow_forwardWhich best describes cyclic photophosphorylation? (a) it uses two photosystems (b) it produces water as a waste product (c) it produces oxygen as a waste product (d) it utilizes a single photosystem (e) it uses substrate level phosphorylation to produce ATParrow_forwardDuring the light reactions of photosynthesis, pigments within the thylakoids membranes absorb solar energy, split water, and releasearrow_forward
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