What among the following would happen to plant exposed to toxin that made thylakoid membranes permeable to protons? a reverasal of proton gradient across thylakoid membrans would result in higher pH in thylakoid lumen than the surrounding stroma reduction of NADP+ inthe chloroplasts would no longer be possible the proton gradient across the ehylakoid membrane woudl be eliminated the transport of electrons by the protein complexes int eh thylakoids would be prevented.

What among the following would happen to plant exposed to toxin that made thylakoid membranes permeable to protons? a reverasal of proton gradient across thylakoid membrans would result in higher pH in thylakoid lumen than the surrounding stroma reduction of NADP+ inthe chloroplasts would no longer be possible the proton gradient across the ehylakoid membrane woudl be eliminated the transport of electrons by the protein complexes int eh thylakoids would be prevented.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter5: Photosynthesis

Section: Chapter Questions

Problem 9RQ: Where in plant cells does the Calvin cycle take place? a. thylakoid membrane b. thylakoid space c....

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Diagram 4: The Light Reactions of Photosymtnes STROMA dow soncentrations Photoeystem PhotoeytmE oomple Light Ligt THYLAKOID SPACE Ohigh concentration) Thylakold membrane ATP wynthase STROMA low H concentration) ADP en from a chloroplast inside of a le the light dependent cyde that take place along the thylakoid membrane a Diagram 4 shows a single thylakoid membrane In photosystem I and II, an electron will O be transferred to ATP be transferred to NADPH lose energy gain energy
Diagram 41 The Light Reactions of Photosynthesis STROMA Poteyte Potayate mples HAD Light HLARO ACE (high ir Carto Thylakold membrane ATP ynthase STROMA ow N concentration) ADP Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a leaf cell. The events of the light dependent cycle that take place along the thylakoid membrane are shown. Identify an energy transfer that takes place n Diagram 4. Light energy is directly transferred into the chemical bonds of sugar. O Light energy is directly transferred into the chemical bonds of ATP The energy of the bonds of water are transferred into the chemical bonds of ATP. The energy from an excited electron is transferred into the chemical bonds of NADPH.
In chloroplasts, protons are pumped out of thestroma across the thylakoid membrane, whereas in mito-chondria, they are pumped out of the matrix across thecrista membrane. Explain how this arrangement allowschloroplasts to generate a larger proton gradient acrossthe thylakoid membrane than mitochondria can generateacross the inner membrane.
Where in plant cells does the Calvin cycle take place? a. thylakoid membrane b. thylakoid space c. stroma d. granum
Under conditions of very high light intensity, excess absorbed solar energy is dissipated by the action of photoprotective proteins in the thylakoid membrane. Explain why it is advantageous for these proteins to be activated by buildup of the proton gradient across the membrane.
If a C3 plant that normally closes its stomata during hot, dry conditions were triggered to open them instead, the most likely outcome would be that O water leaves the leaf, decreasing the rate of photosynthesis O glucose leaves the leaf, increasing the rate of photosynthesis O CO₂ enters the leaf, decreasing the rate of photosynthesis O O₂ enters the leaf, increasing the rate of photosynthesis more chlorophyll is made, increasing the rate of photosynthesis
Diagram 4: The Light Reactions of Photosynthesis STROMA dow concentralion Photonystem B Cytch e Photosystem Light omplex Light NADP reductoe NADP NADPH THYLAKOID SPACE igh ooncentration) Cavin Cyle Thylakid menbrane ATP STROMA ow H eone sythase ADP ATP Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a leaf cell. The events of the light dependent cycle that take place along the thylakoid membrane are shown. Light energy is captured by O ATP synthase O Photosystems I and II O NADP+ reductase The thylakoid membrane's lipid structures Drovious
Even though C4 plants require more ATP per CO₂ fixed, at higher temperatures, they are more efficient than C3 plants. Which of the following explains the effectiveness of C4 plants? contains a mutant form of Rubisco that does not bind to oxygen oxygen is prevented from entering the bundle-sheath cells where Rubisco is found Oduring the night, carbon dioxide is stored as malate so that stomata do not need to open during the day O photorespiration in C4 plants produces energy while in C3 plants, energy is consumed
Which of the following best summarizes the strategy used by CAM plants, which live in hot and dry climates, in order to conserve water? O These plants use a different electron donor so that they won't consume water O These plants keep stomata closed day and night to avoid evaporation O These plants collect carbon dioxide at night, but then use the carbon dioxide during the day O These plants are heterotrophs, so they do not need to rely on light reactions that consume water
Which is a difference between proteins and DNA? "Proteins contain carbon atoms, DNA does not" "DNA is found in the cell membrane, proteins are only in the cytoplasm " "DNA is mostly contained in the nucleus, proteins are found in nucleus and cytoplasm " "Proteins store information, DNA catalyzes reactions "
The C4 pathway utilizes less ATP than C3 pathway thus enabling C4 plants to adapt to tropical temperatures. O True O False « Previous Nex Saving... Subm
Describe why the H+ gradient across a thylakoid membraneis referred to as a storage of energy.