Which of the following is the correct sequence for the movement of electrons duringthelight-dependent reactions of plants?a) P680, water, P700, NADP+c) P700, P680, NADP+, waterb) Water, P680, P700, NADP+d) Water, P700, NADP+, P680

During the light-dependent reactions, light energy is absorbed by photosystems I and II (PSI and…

Answered: Which of the following is the correct…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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At the end of the first photosystem, an electron leaves a chlorophyll molecule. This electron is replaced by another electron that comes from… Group of answer choices a)water b)P540 c)ETC 1 d)molecular oxygen e)P680
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions are luciferin+O2 ⇌ oxyluciferin+light ATP ⇌ AMP+PPi, ΔGo=−31.6 kJ/mol If the overall ΔGo of the coupled reaction is -8.70 kJ/mol, what is the equilibrium constant, K, of the first reaction at 27oC?
The following image is a schematic of the metabolic processes occurring in a plant contained in a closed container. A=Light Dependent reactions B=Glycolysis C=Light Independent Reactions D=Kreb's cycle E=electron transport chain 2a) Use the figure above to explain the conditions in which the oxygen concentration remains constant in the container. b) 2-carboxyarabinitol-1,5-bisphosphate (CABP) is an inhibitor of the enzyme rubisco. Which pathway would this affect most?
In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? In photosynthesis, which of the following is NOT true about the light-dependent (“light”) reaction? Glucose is synthesized from CO2 and water during the light-dependent reaction The light-dependent reaction converts light energy to chemical energy stored in ATP The light-dependent reaction (non-cyclic) captures electrons in NADPH Light-excited electrons in chlorophyll provide the energy for ATP production None of the other four answers (All are true of the light-dependent reaction)
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
The respiration rate (as measured by the slope of the line) of an organism is calculated by O A) dividing the weight (g) of the organism by the amount of CO2 produced (ppm) B) dividing the time elapsed (per second) by CO2 produced (ppm) C) dividing the CO2 produced (ppm) by the weight of the organism (g) D) dividing the CO2 produced (ppm) by the time elapsed (per second)
The use of the C4 pathway for initial carbon fixation (CO2 into a 4C compound) I. occurs only in plants with specialized leaf anatomy containing bundle sheath cells surrounded by a ring of mesophyll cells II. occurs during the day in CAM plants III. reduces the problems of photorespiration by isolating the enzyme PEP carboxylase from high levels of dissolved O2
34) 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 -> ATP
CAM photosynthesis differs from C4 photosynthesis in that in CAM… a) photorespiration occurs at a high rate. b) photosynthesis occurs entirely at night. c) photosynthesis extracts carbon from organic compounds. d) photosynthesis is more efficient in times of drought. e) photosynthesis is more efficient in high light environments.
Which 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 molecules
Draw a diagram of the dark phase of photosynthesis. You must represent this phase in the form of a cycle indicating the parts of carboxylation, reduction, generation of hexoses and regeneration. Ribulose, CO2, rubisco, phosphoglycerate (PGA), bisphosphoglycerate, phosphoglyceraldehyde (PGAL), ATP, ADP, NADPH, NADP, kinase, fructose, and glucose should appear.
As energy passes from blue-absorbing chlorophylls down to red-absorbing chlorophylls, surprisingly, no energy passes from lower energy-absorbing pigments back to higher ones (in other words, the process is irreversible). Why might that be?

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Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plants? a) P680, water, P700, NADP+ c) P700, P680, NADP+, water b) Water, P680, P700, NADP+ d) Water, P700, NADP+, P680