Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 8.3, Problem 1CC
Summary Introduction
To determine: The maximum energy state attained by electron during the transfer from photosystem II to NADPH
Introduction: The electron moves in a zigzag manner through a series of energy changes that take place during photosynthesis. This is referred to as Z-scheme which has been proposed by Hill and Bendall.
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Introduction
The major context for this lab is photosynthesis, and the overall equation for photosynthesis is:
12 H2O + 6 CO2+ light energy → C6H12O6+ 6O2+ 6 H2O
Exercise A: Photosynthetic Pigments
Watch the following two videos about plant pigments and chromatography. To analyze the data we’ll give you, you’ll need to understand what types of pigments are found in a leaf, and understand some general characteristics of those pigments.
Photosynthetic Pigments (~3 min)
link: https://www.youtube.com/watch?v=dwz3qozDiyI
Leaf Color Chromatography (~4.5 min)
link: https://www.youtube.com/watch?v=qH-AJDqsSII
Answer the below questions :
Define the following terms:
photosynthesis
chromatography
absorption spectrum
action spectrum
chlorophylls
carotenoids (carotene and xanthophyll)
Referring to the Photosynthetic Pigments video, in the table below, write in the peak wavelength ranges absorbed by each of the following pigments. Include the colors that are associated with those…
Q no 2: Describe in detail what happens during the light reactions of photosystems. Use terms such as photosystems (be specific about which is which), pigments, reaction center, water-splitting, NADPH, ATP, ADP, NADP+, oxygen gas, etc?
Please answer fast
Many commercial herbicides act by inhibiting photosynthetic electron transport. They are investigating three herbicides for potential inhibitors of photosynthetic electron transport.
a) How can you determine whether these substances have an inhibitory effect on photosynthetic electron transport? How can you quantify the effect?
b) An inhibitor has produced a strong effect in "in vitro" tests, but the effect is significantly less in "in vivo" tests. What can be the reason for the reduced effect "in vivo"?
Chapter 8 Solutions
Biology
Ch. 8.1 - Core Skill: Modeling The goal of this modeling...Ch. 8.1 - Prob. 2CSCh. 8.1 - Can the Calvin cycle occur in the dark?Ch. 8.2 - Prob. 1CCCh. 8.2 - Prob. 2CCCh. 8.2 - Prob. 3CCCh. 8.2 - Prob. 4CCCh. 8.2 - Why does cyclic photophosphorylation provide an...Ch. 8.2 - Prob. 6CCCh. 8.3 - Prob. 1CC
Ch. 8.4 - Prob. 1CCCh. 8.4 - Prob. 1EQCh. 8.4 - Prob. 2EQCh. 8.4 - Prob. 3EQCh. 8.5 - Prob. 1CCCh. 8.5 - Prob. 2CCCh. 8 - The water necessary for photosynthesis a. is split...Ch. 8 - In PSII, P68o differs from the pigment molecules...Ch. 8 - Prob. 3TYCh. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - Prob. 6TYCh. 8 - Prob. 7TYCh. 8 - Prob. 8TYCh. 8 - Prob. 9TYCh. 8 - Prob. 10TYCh. 8 - Prob. 1CQCh. 8 - Prob. 2CQCh. 8 - Prob. 3CQCh. 8 - Discuss the advantages and disadvantages of being...Ch. 8 - Biotechnologists are trying to genetically modify...
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- Step Input Output Light Dependent Reactions Light Independent Reactions (Dark Reactions) Write the full chemical equation for photosynthesis below: Eactors that Affect Photosynthesis Gas exchange usually results in a loss of o Desert plants have special, • Photosynthesis has an optimal and is limited by amounts of Section 3: Cellular Respiration (Aerobic Respiration) All living things need The food ( is broken down to and energy is released in the form of Write the chemical equation for cellular respiration below: Step 1: Glycolysis step process that breaks down into two smaller Results in small amounts of Does not require (anaerobic) Occurs outside Input Output © 2020 to present Keystone Sclence - All Rights Reserved www.teacherspayteochers.com/Store/Keystone-Sciencearrow_forwardObserving the over-all equation for photosynthesis, what are two variables other than light intensity, which would have an influence on how quickly the leaf disks float? Thanks in advancearrow_forwardIn photosynthesis, reaction? which of the following is NOT true about the light-dependent ("light”) 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) The light-dependent reaction converts light energy to chemical energy stored in ATP The light-dependent reaction (non-cyclic) captures electrons in NADPH Glucose is synthesized from CO2 and water during the light-dependent reactionarrow_forward
- Photosyntheis related question (s): When protons move out of the thylakoid, are they moving up or down their concentration gradient? (From low to high concentration or from high to low concentration?) What protein(s) facilitate the transport of protons out of the thylakoid? We can write the formula for photosynthesis as follows: 6 H2O + 6 CO2 + light energy → C6H12O6 + 6 O2 How would you write a formula for the light reactions? Include ATP, ADP, NADP and NADPH as relevant? How would you write a formula for the Calvin cycle? Include ATP, ADP, NADP and NADPH as relevant.arrow_forwardPlease answer fast Indicate if the following statements are true or false for the diagram: 1. The diagram includes both systems. 2. The diagram represents the dark reactions. 3. The green circles inside the photosystems represent pigments. 4. In the first electron transport chain, NADPH is produced. 5. In these reactions sugars are produced.arrow_forwardc) . solar photons. Describe two ways through which Photosystem I and Photosystem II optimize the capture of d) good oxidant and a good reductant at the same time. With a simple frontier orbital diagram, explain why the photo-excited P680 pigment is both aarrow_forward
- Photosynthesis 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_forward"Energy Transformation" ATP-ADP CYCLE Answer the following questions correctly and explain your answer. 1. What wavelength of light is most important to life on earth? 2. What color/s of light does chlorophyll absorb? What color does it reflect? 3. What composes a photosystem ? 4. In what part of the photosystem does the first step of light reaction take place? 5. Differentiate the two types of photosystem.arrow_forwardATP is produced by chemiosmosis in photosynthesis". Identify where and how this chemical gradient is formed?how this is driving the ATP synthesis. Mention where the light dependent and light independent reactions of photosynthesis take place along with the functional end product(s) of these two stages. Dark and light reactions of photosynthesis are interconnected, how?arrow_forward
- 119 Insert 6. Table Chart Text Shape Media Comment Plants cells contain both mitochondria and chloroplasts. What outputs of photosynthesis can become inputs for respiration? What outputs of respiration can become inputs of photosynthesis? 7. The rate of photosynthesis was measured for two different plants for varying levels of CO2 (concentration of CO2). Use the graph below to answer the following questions: a. Label the two curves with the enzyme used for initial step of carbon fixation in each plant. j b. Which curve has the lowest Km value? What does that tell us about the ability of each enzyme to fix CO2? Rate of Photosynthesis CHSELHOSOS 40 35 30 25 20 15 10 } 5 0 -5 0 200 404 words [CO2] Based on the graph, which plant would seem to benefit the most from higher levels of CO2 in the atmosphere due to global warming? Why? MacBook Pro 400 d. Which plant will better handle rising temperatures due to global climate change? Why? Collaborate Maize (C₁) Bean (C3) 600arrow_forwardThe light phase of photosynthesis at the molecular... Photosystem II r QUALI Watch on YouTube Q Search Answer the following questions using the virtual lab light phase video. Where do the electrons for the light reaction come from? How does light cause protons to be pumped? If photosystem 1 (the second photosystem in the chain) is mutated and does not work, will the plant still be able to provide ATP for the Dark reaction? SLO 2 LO M CSU 40 4+ 8 244 9 >11. Share 111 112 +arrow_forward"Energy Transformation" ATP-ADP CYCLE Construct a final draft sketch on the photoexcitation of Chlorophyll.With labels and explanation.arrow_forward
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