• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Photosynthesis
Photosynthesis

... the e- is passed along a series of electron carriers called …  the electron transport chain ...
photosynthesis
photosynthesis

... electron transfer Occurs. The basis of photosynthesis is transduction of light energy into chemical energy. Photon absorption raises chlorophyll (Chl) to Chl*. Electron transfer from Chl* to an adjacent molecule A, producing oxidized Chl (Chl•+) and reduced A (A-). Oxidation of A- eventually culmina ...
You are Star-stuff, But You Can`t Eat Photons
You are Star-stuff, But You Can`t Eat Photons

... base of life’s pyramid, consisting of most of the biomass on planet earth, and spending all of its time doing nothing but look up at the sun and feast on its rays. This feasting is known as photosynthesis, and effectively converts the bombardment of photons constantly blanketing the earth into usefu ...
Learning Objectives
Learning Objectives

... o Where NADH is produced. o Where FADH2 is produced. o Where CO2 is produced o Where GTP is produced o What type of reaction is happening in each step (hydration, decarboxylation, etc) o Which steps involve oxidations and reductions What are 4 of the different ways in which the citric acid cycle is ...
Song Skit Story Poem Photosynthesis
Song Skit Story Poem Photosynthesis

... Song, Skit, or Story!!!!!!!!!!!! Chloroplast, thylakoid, stroma, sunlight, energy, electron, hydrogen ion, Water, oxygen, NADP, H, NADPH, ADP, P, ATP, ATP Synthase, Photosystem II, Photosystem I, Calvin Cycle, Light-Dependent Reaction, Electron Transport Chain, sugar, carbon dioxide, *** OK, here’s ...
Chapter 8 Answers to Even Numbered Study Questions
Chapter 8 Answers to Even Numbered Study Questions

... two waters for the four electrons to reduce the two NADPH. Each electron has to be excited in PS II and then in PS I, so it requires two photons per electron, or a total of eight photons for noncyclic photophosphorylation. The process also releases four protons into the thylakoid space, and four pro ...
Stroma
Stroma

... 23. Refer to Question #22. What wavelength of light would be the least effective at supporting photosynthesis? Why? 24. Compare cyclic and non-cyclic photophosphorylation. 25. Where does photophosphorylation occur? 26. What is the function of water in photosynthesis? 27. How much ATP and NADPH does ...
Stroma
Stroma

... Refer to Question #24. What wavelength of light would be the least effective at supporting photosynthesis? Why? Compare cyclic and non-cyclic photophosphorylation. Where does photophosphorylation occur? What is the function of water in photosynthesis? How much ATP and NADPH does it take to produce o ...
DiscBio: C9 Voc Definitions
DiscBio: C9 Voc Definitions

... 19. metabolic pathway; 20 metabolism; 21 mitochondrion; 22 NADH; 23 NADPH; 24 oxidative phosphorylation; 25 photosynthesis; 26 photosystem; 27 photosystem I; 28 photosystem II; 29 producer; 30 proton gradient; 31 pyruvate; 32 reaction center; 33 rubisco; 34 stoma; 35 stroma; 36 thylakoid 1. oxygen-d ...
Chapter 10: Photosynthesis
Chapter 10: Photosynthesis

... Primary electron acceptor in photosystem I is a chlorophyll called P700 Primary electron acceptor in photosystem II is a chlorophyll called P680 They are identical but have different absorption spectra Noncyclic electron flow This is the major pathway, uses both photosystems Use figure 10.12 and fol ...
BCH 413- PLANT BIOCHEMISTRY (2 UNITS) • ORGANIZATION OF
BCH 413- PLANT BIOCHEMISTRY (2 UNITS) • ORGANIZATION OF

... This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ATP and P700. 2. Excited electrons from Photosystem I could flow down a different electron transport chain to produce NADPH, which is used to synt ...
lecture1
lecture1

... Excited electrons from Photosystem I can use an electron transport chain to reduce oxidized P700. This sets up a proton gradient, which can generate ATP. The end result of this looping electron flow, called cyclic phosphorylation, is the generation of ATP and P700. Excited electrons from Photosystem ...
Dr. Harris Chemistry 105 Practice Exam 1 Isotope Atomic Number
Dr. Harris Chemistry 105 Practice Exam 1 Isotope Atomic Number

... reactions. Label the reducing and oxidizing agents. Show the net ionic equation. If no reaction occurs, write “no reaction”. a.) Titanium (IV) perchlorate (aq) + Lithium (s)  b.) Magnesium (s) + Sulfuric acid (aq)  c.) Aluminum nitrate (aq) + Potassium (s)  19. Provide an acceptable set of quantu ...
8.3 The Process of Photosynthesis I. Light Dependent Reactions
8.3 The Process of Photosynthesis I. Light Dependent Reactions

... o Reactions of photosynthesis use reactions that function between 0 and 35 degrees Celsius o Higher light intensity= higher rate of photosynthesis  There is however, a maximum rate of photosynthesis o Shortage of water can slow photosynthesis and damage plant tissues  Some plants in desert areas h ...
photosynthesis - UniMAP Portal
photosynthesis - UniMAP Portal

... There are 3 types of primary photosynthetic pigments. Chlorophylls- the green pigments that absorb blue-violet and red wavelengths of light Carotenoids- the orange pigments molecules which serves as antenna pigments and protect from ROS (reacting oxygen species) Xanthophylls- oxygenated derivatives ...
CHLOROPLASTS, CALVIN CYCLE, PHOTOSYNTHETIC
CHLOROPLASTS, CALVIN CYCLE, PHOTOSYNTHETIC

... Several of these reactions in the Calvin cycle and gluconeogenesis (synthesis of 6C) are shared with glycolysis (breakdown of 6C), except the essentially irreversible reactions in glycolysis have to be bypassed by new reactions. These steps in the Calvin cycle consume 2ATP and 2NADPH per 6C formed f ...
PowerPoint Presentation - Clayton School District
PowerPoint Presentation - Clayton School District

... Describe what is meant by the electron transport chain. • Series of protein molecules embedded on the membrane where each has a successively higher attraction for electrons than the previous one ...
8-3 The Reactions of Photosynthesis
8-3 The Reactions of Photosynthesis

... • 1. Plants use energy contained in ATP and NADPH from the light-dependent reactions during the calvin cycle to make high-energy ...
Photosynthesis
Photosynthesis

... Two main processes of photosynthesis • light dependent or light reactions-use light energy directly to produce ATP that powers the light-independent reactions • light independent reactions-consist of the Calvin cycle, which produces sugar. • To power the production of sugar, the Calvin cycle uses t ...
Photosynthetic organisms
Photosynthetic organisms

... Photosynthetic organisms • Anoxygenic Photosynthesis – Green and purple (sulfur and non-sulfur) bacteria and heliobacteria ...
Ch 9 Notes Cellular Respiration: Harvesting Chemical Energy
Ch 9 Notes Cellular Respiration: Harvesting Chemical Energy

... Basically a transfer of electrons from something less electronegative to something more electronegative. ...
Chapter 15 (part1)
Chapter 15 (part1)

... • Light driven ETC generates a proton gradient which is used to provide energy for ATP production through a F1Fo type ATPase. • The photosynthetic ETC generates proton gradient across the thylakoid membrane. • Protons are pumped into the lumen space. • When protons exit the lumen and re-enter the st ...
Photosynthesis - Northwest ISD Moodle
Photosynthesis - Northwest ISD Moodle

... with six 5-carbon compounds to form 12 3carbon molecules called 3-phosphoglycerate (3PGA). • 2. Energy in ATP and NADPH is transferred to the 3-PGA molecules to form high energy molecules called glyceraldehyde 3-phosphates (G3P). ATP supplies the phosphate group, while NADPH supplies the H+ ions and ...
Chapter 8 Vocabulary
Chapter 8 Vocabulary

... Autotroph – Organism that can capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; called a producer. Heterotroph – Organism that obtains energy from the foods it consumes; also called a consumer. Adenosine Triphosphate (ATP) – One of the principal c ...
Electron Transport Chain _ETC
Electron Transport Chain _ETC

... Each complex accepts or donates electrons to relatively mobile electron carriers, such as ubiquinone (coenzyme Q) and cytochrome c. Each carrier in the electron transport chain can receive electrons from an electron donor, and can subsequently donate electrons to the next carrier in the chain. The ...
< 1 ... 280 281 282 283 284 285 >

Light-dependent reactions

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place. The thylakoid membrane contains some integral membrane protein complexes that catalyze the light reactions. There are four major protein complexes in the thylakoid membrane: Photosystem II (PSII), Cytochrome b6f complex, Photosystem I (PSI), and ATP synthase. These four complexes work together to ultimately create the products ATP and NADPH.[.The two photosystems absorb light energy through pigments - primarily the chlorophylls, which are responsible for the green color of leaves. The light-dependent reactions begin in photosystem II. When a chlorophyll a molecule within the reaction center of PSII absorbs a photon, an electron in this molecule attains a higher energy level. Because this state of an electron is very unstable, the electron is transferred from one to another molecule creating a chain of redox reactions, called an electron transport chain (ETC). The electron flow goes from PSII to cytochrome b6f to PSI. In PSI, the electron gets the energy from another photon. The final electron acceptor is NADP. In oxygenic photosynthesis, the first electron donor is water, creating oxygen as a waste product. In anoxygenic photosynthesis various electron donors are used.Cytochrome b6f and ATP synthase work together to create ATP. This process is called photophosphorylation, which occurs in two different ways. In non-cyclic photophosphorylation, cytochrome b6f uses the energy of electrons from PSII to pump protons from the stroma to the lumen. The proton gradient across the thylakoid membrane creates a proton-motive force, used by ATP synthase to form ATP. In cyclic photophosphorylation, cytochrome b6f uses the energy of electrons from not only PSII but also PSI to create more ATP and to stop the production of NADPH. Cyclic phosphorylation is important to create ATP and maintain NADPH in the right proportion for the light-independent reactions.The net-reaction of all light-dependent reactions in oxygenic photosynthesis is:2H2O + 2NADP+ + 3ADP + 3Pi → O2 + 2NADPH + 3ATPThe two photosystems are protein complexes that absorb photons and are able to use this energy to create an electron transport chain. Photosystem I and II are very similar in structure and function. They use special proteins, called light-harvesting complexes, to absorb the photons with very high effectiveness. If a special pigment molecule in a photosynthetic reaction center absorbs a photon, an electron in this pigment attains the excited state and then is transferred to another molecule in the reaction center. This reaction, called photoinduced charge separation, is the start of the electron flow and is unique because it transforms light energy into chemical forms.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report