Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 19, Problem 2P
Interpretation Introduction
Interpretation:
The component, to which the photo system donates electron.
Concept introduction:
Photosystem I (PSI, or plastocyanin-ferredoxin oxidoreductase) is a photosystem of the photosynthetic light reactions. It is an integral membrane protein complex which uses light energy to produce high energy carrier molecules ATP and NADPH.
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Which of the following statements is most correct? Explain
A. NAD/NADH are involved in catabolic reactions.
B. In plants the major source of NADH is from ferredoxin formed from the high energy electrons generated by Photosystem II.
C. Large molecules are built using catabolic reactions.
D. NADP is not found in animal cells.
During respiration various oxidation reduction reaction occur in plants. Could you expand this point further?
True or False? In photosynthesis, both photosystems (I and II) depend on the energy of sunlight to excite a chlorophyll molecule until it releases an electron.
Chapter 19 Solutions
Biochemistry
Ch. 19 - Prob. 1PCh. 19 - Prob. 2PCh. 19 - Prob. 3PCh. 19 - Prob. 4PCh. 19 - Prob. 5PCh. 19 - Prob. 6PCh. 19 - Prob. 7PCh. 19 - Prob. 8PCh. 19 - Prob. 9PCh. 19 - Prob. 10P
Ch. 19 - Prob. 11PCh. 19 - Prob. 12PCh. 19 - Prob. 13PCh. 19 - Prob. 14PCh. 19 - Prob. 15PCh. 19 - Prob. 16PCh. 19 - Prob. 17PCh. 19 - Prob. 18PCh. 19 - Prob. 19PCh. 19 - Prob. 20PCh. 19 - Prob. 21PCh. 19 - Prob. 22PCh. 19 - Prob. 23PCh. 19 - Prob. 24PCh. 19 - Prob. 25PCh. 19 - Prob. 26PCh. 19 - Prob. 27PCh. 19 - Prob. 28PCh. 19 - Prob. 29PCh. 19 - Prob. 30PCh. 19 - Prob. 31P
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- True or False? The following is the correct sequence for the movement of electrons during the light-dependent reactions of plants: A) P680 --> P700 --> water --> NADP+ In cellular metabolism, photosynthesis uses solar energy to produce energy-rich organics; respiration breaks down energy-rich organics to synthesize ATParrow_forwardPhotosynthesis and Respiration: Explain the details of the light-independent reaction. Make sure to explain the role of ATP and NADPH and where this reaction takes place.arrow_forwardExplain how CO2 is "fixed" by the Calvin cycle and converted into glyceraldehyde 3-phosphate. (i.e. explain how the whole Calvin cycle works)arrow_forward
- Photosynthesis and Respiration: Explain the details of the light-dependent reaction. Make sure you provide the details as to how all three products are made and where this reaction takes place.arrow_forwardTrue or False: 1. Electron-deficient chlorophyll molecules of PS II receives electron from PS I. 2. Xanthophylls around the reaction centers transfer their energy to chlorophyll molecules. 3. CO2 is fixated when it combines with the phosphate during the initial phase of the Calvin cycle.arrow_forwardThe compound Carbonyl cyanide-p-trifluoromethoxyphenyl hydrazone (FCCP) acts as an uncoupler of electrochemical gradients (in both mitochondria and chloroplasts) by shuttling protons across membranes. Predict the effect of a high dose of FCCP on the synthesis of ATP and NADPH in photosynthesis. Rationalize your answersAnswer separately with prediction and reason please thank you so mucharrow_forward
- In chapter 9 you were given the overall equation for respiration. In Chapter 10 you were given the overall equation for photosynthesis. It has been said that photosynthesis is the opposite of respiration. But is it really? Describe several of the similarities between photosynthesis and respiration, and list several ways in which these reactions are quite different from each other.arrow_forwardIS THIS A GOOD BREAK DOWN? WHAT ELSE CAN I SHOULD I ADD? Briefly explain the light-dependent reactions of photosynthesis: where does this take place, what are the reactants and what is produced? Light-dependent reactions are used to convert light energy into chemical energy for use by the plants. Through the process of photosynthesis, the energy collected from the sun is broken down, along with water molecules, to produce NADPH and ATP. Light-dependent reactions Goal Convert light energy into chemical energy Location Chloroplasts—thylakoids Input Sunlight, H2O, NADP+, ADP Output NADPH, ATP, O2arrow_forwardChoose 2 of the following terms: Z protein / ATP synthase / Photosystem II. What is the specific role of each of the following? Describe what and how the protein does its job. As well, explain the importance of each in the overall process of photosynthesis.arrow_forward
- During respiration various oxidation reduction reaction occurs in plants?could you expand this point further?in detailarrow_forwardPlease don't copy Complete the Calvin-Benson cycle if 12 CO2 molecules are fixed. Indicate the number of starting products, intermediates and final products. Count your carbons at each step. How many glucose molecules can be made?arrow_forwardAdjusting the wavelength of light and increasing the temperature can increase the rate of photosynthesis. Using specifics, describe in detail the effect of wavelength and temperature on photosynthesis and why or how these 2 factors affect the creation of the molecules used in or produced by photosynthesis.arrow_forward
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