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
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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…
In an experiment conducted on photosynthesis-CO2 update and photosynthesis-Determining rate in white light. what gas will be produce as an product of photosynthesis and if present, what will this allow the leaf dice to do? Also, what will be the goal of photosynthesis, and how will it be different from the goal of cellular respiration?
Artificial photosynthesis history? Who developed it? And when did major advancements
about it happened?
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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- ATP 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_forwardPlease explain thoroughly. Thanks. 1. Would Hill reaction proceed at a significantly faster rater if... a) Reaction proceeded at a temperature 10 degrees centigrade HIGHER. Why or why not? b) Reaction is conducted at HIGHER light intensitites. Why or why not? 2. Does measuring Hill reaction accurately measure the entire photosynthetic process? Why or why not?arrow_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_forward
- 2.) A.) Explain how electron transfer leads to ATP biosynthesis in the light reactions of photosynthesis. You must give details about how electron flow builds a pH gradient and a description of the compartments in the chloroplast in relation to pH. Also, compare the ETC of the mitochondrion with the ETC of the light reactions for both the source and destination for electrons. B.) Would ATP biosynthesis happen if ionophores, which would create holes in the thylakoid membrane and allow uncontrolled passage of charged molecules such as protons between compartments, are provided to the chloroplast? Why or why not? C.) How would you modify Complex I of the electron transport chain to decrease ATP yield from Step 3 of β-oxidation? As part of this, you must explain why there is a difference in ATP yield between NADH and FADH 2 AND give a specific change to the ETC that would decrease ATP yield from Step 3arrow_forwardQuestion:- Which of the following statements about photosynthesis are FALSE? a) Photosystem II has a higher redox potential than water. b) Plastocyanin donates its electrons to photosystem I. c) Chloroplast ATP synthase releases ATP into the thylakoid space d) Water-splitting enzyme releases four protons into the thylakoid space for every water molecule that is split. e)cytochrome b6-f complex pumps protons into the thylakoid space.arrow_forwardWhy is a hypotonic buffer used for the resuspension? 1.DCPIP passes easily across the intact chloroplast membrane, but can't get into the thylakoid, so electron transport could not be reliably measured if using a hypotonic buffer. 2.To gently lyse the chloroplasts, leaving the electron transport membranes intact, whilst allowing DCPIP access 3.To gently separate the chloroplasts from each other, leaving the electron transport membranes intact, whilst allowing DCPIP access 4.DCPIP cannot easily across the intact chloroplast membrane, so electron transport could not be reliably measured if using a hypotonic buffer.arrow_forward
- . Describe cyclic electron flow (be sure to include which photosystems are involved and what end products are made in the reactions).arrow_forwardQ) Start with a photon of sunlight and a carbon atom in a molecule of carbon dioxide in the atmosphere: model/diagram their pathway from that starting point to their final destination as a glucose molecule that is used for energy in a cell in the plant root. Following your diagram/model, provide a written explanation for what your diagram/model depicts. Make sure both your model and explanation are clear, concise, and have the appropriate level of detail to clearly demonstrate you understand photosynthesis, cellular respiration, and the movement of mass and energy in plants.arrow_forwardTags: photosynthesis, plants, biology, chemistry, biochemistry Consider a recently discovered planet that scientists believe is capable of supporting life due to its similarities to the earth. However, its daytime temperature and oxygen content in its atmosphere are HIGHER than earth. Design a plant that can survive and show MAXIMUM photosynthetic efficiency in this planet by enumerating the features (anatomical/metabolic) that you will include and explain why it is necessary to include them.arrow_forward
- "Energy Transformation" ATP-ADP CYCLE Construct a final draft sketch on the photoexcitation of Chlorophyll.With labels and explanation.arrow_forwardCompare how the high-energy electrons produced by the Krebs cycle and Photosystem II convert their energy into ATP production. Make sure you point out where the electrons come from and where they eventually end up in both systems. What is the resulting ATP used for in each system?arrow_forwardPlease help! Photosynthesis and Cell respiration: A. What should happen to the O2 levels in a closed container containing a plant during the day? why? B. And what happens to the O2 levels during the night (no light)? Why?arrow_forward
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