Do question 29 What happens when an excited electron is passed through electron acceptors in theelectron transport chain in a photosystem?The electron acceptor is oxidizedEnergy in sunlight is transformed to chemical energyO It drops back down to its ground state, resulting in the phenomenon as fluorescenceThe chemical energy in the excited electron is released as heatThe electron acceptor is transformed to a higher free energy state than the excited electron

The electron transport occurs during light reaction in the chloroplast.

What happens when an excited electron is passed through electron acceptors in the electron transport chain in a photosystem? The electron acceptor is oxidized Energy in sunlight is transformed to chemical energy It drops back down to its ground state, resulting in the phenomenon as fluorescence The chemical energy in the excited electron is released as heat The electron acceptor is transformed to a higher free energy state than the excited electron

What happens when an excited electron is passed through electron acceptors in the electron transport chain in a photosystem? The electron acceptor is oxidized Energy in sunlight is transformed to chemical energy It drops back down to its ground state, resulting in the phenomenon as fluorescence The chemical energy in the excited electron is released as heat The electron acceptor is transformed to a higher free energy state than the excited electron

Biochemistry

6th Edition

ISBN:9781305577206

Author:Reginald H. Garrett, Charles M. Grisham

Publisher:Reginald H. Garrett, Charles M. Grisham

Chapter21: Photosynthesis

Section: Chapter Questions

Problem 5P: The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If...

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The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)
Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2
Which of the following pathways requires molecular oxygen (O2)? a. aerobic respiration b. lactate formation c. alcoholic fermentation d. photosynthesis
Which of the following sequences correctly represents the flowof electrons during photosynthesis?(A) NADPH S O2 S CO2(B) H2O S NADPH S Calvin cycle(C) H2O S photosystem I S photosystem II(D) NADPH S electron transport chain S O2
The above reaction (FADH2 donating its electrons to the electron transport chain) takes place in whichof the following eukaryotic cell locations?A. the mitochondrial matrixB. the thylakoid membrane of chloroplastsC. the chloroplast stromaD. the inner mitochondrial membraneE. the cytoplasm
n cyclic photophosphorylation in photosystem I, ATP is produced, even though water is not split. Explain how the process takes place
After electrons are raised to high energy levels in photosystem II, they travel down an electron transport chain. As they are stepped down in energy, the lost energy is used to power which process. The pumping of high energy electrons into the intermembrane space. This creates a large difference in concentration and in electric charge between the intermembrane space and the lumen of the thylakoid. When these high energy electrons rush back into the thylakoid lumen, they are forced to travel through one of the ATP synthase molecules that sits embedded in the thylakoid membrane. ATP synthase uses the flow of hydrogen ions to phosphorylate ADP, converting it to ATP. The pumping of hydrogen ions into the stroma. This creates a large difference in concentration and in electric charge between the stroma and the lumen (watery interior) of the thylakoid. When When the hydrogen ions in the stroma rush back into the thylakoid lumen, they are forced to…
The "high energy electrons" used in the electron transport chain (ETC) of cellular respiration come from glucose. Plants and cyanobacteria produce glucose through photosynthesis. Where does the energy come from to produce glucose with "high energy electrons"?
Excited molecules can return to the ground state by severalmeans. Describe each briefly. Which of these processes areimportant in photosynthesis? Describe how they function ina living organism.
Which of the following descriptions about photosystems during linear electron flow is not correct? Select one: a. energy required for ATP synthesis is provided when electrons pass through the electron transport chain from photosystem I b. photosystem II works before photosystem I c. P680 is the chlorophyll a pair that exists in photosystemII d. the primary electron acceptor receives electrons from P680 or P700 e. P680+ receives electrons from the splitting of water
The terminal electron acceptor during the light reactions of photosynthesis is __________________________. (i.e. what picks up the electrons at the end of the light reactions of photosynthesis?) H2O Pyruvate O2 NADP+
Which of the following statements is/are TRUE for photosynthesis? The e- moves from H20 to NADP+. Some of the products from the dark reaction are required in the light reaction. It is an exergonic process that naturally by using energy from light It Involves conversion of 02 to H20 and C02 to glucose.