• Study Resource
  • Explore Categories
    • 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
CHAPTER 4: CELLULAR METABOLISM
CHAPTER 4: CELLULAR METABOLISM

... All organic molecules (carbohydrates, fats, and proteins) can be processed to release energy, but we will focus on the steps of CR for the breakdown of glucose (C6H12O6). ...
Metabolism
Metabolism

... and the transport of substances into and between different cells. ...
Energy Systems
Energy Systems

... re-synthesise three molecules of ATP but the process of glycolysis itself requires energy (one molecule)  The lactic acid system provides energy for high-intensity activities lasting up to 3 minutes but peaking at 1 minute, for example the 400m ...
Cellular physiology ATP and Biological Energy
Cellular physiology ATP and Biological Energy

... Highly ordered living organisms do not violate the second law because they are open systems. For example, animals: Maintain highly ordered structure at the expense of increased entropy of their surroundings. Take in complex high energy molecules as food and extract chemical energy to create and main ...
Lesson Overview
Lesson Overview

... energy carriers: NADPH and ATP 2. Light-independent reactions – uses carbon dioxide (CO2) to produce glucose, using energy from NADPH and ATP (from step 1) ...
video slide - Northwest Florida State College
video slide - Northwest Florida State College

... a) Pathway of several enzymes which pass e from one to another. 1) Everytime e moves from one enzyme to another, energy is released and used to make ATP b) ETC located in the inner membrane of ...
CHAPTER 6
CHAPTER 6

... the same product are not the same enzymatic reactions • Some steps may be common to both, others must be different - to ensure that each pathway is spontaneous • This also allows regulation mechanisms to turn one pathway on and the other off ...
CPP1
CPP1

... protein of POR 1 (CPP1), an essential protein for chloroplast development, plays a role in the regulation of POR stability and function. CPP1 contains a J-like domain and three transmembrane domains and is localized in the thylakoid and envelope membranes, and interacts with POR isoforms in chloropl ...
Chapter 6
Chapter 6

... NADH and Electron Transport Chains – The path that electrons take on their way down from glucose to oxygen involves many steps. – The first step is an electron acceptor called NAD+. • The transfer of electrons from organic fuel to NAD+ reduces it to NADH. ...
Adv. Bio. Ch 9 Glyco and Resp
Adv. Bio. Ch 9 Glyco and Resp

... Ancient prokaryotes probably used anaerobic respiration and fermentation before oxygen was present in the atmosphere Also, glycolysis does not require mitochondria to ...
PCMB Today
PCMB Today

... passes through a series of carriers including an iron containing red protein called ferredoxin (Fd) through an unknown electron acceptor called ferredoxin – reducing substance (FRS), cyt b6–f and plastocyanin before returning to photocentre. •• During the transfer of electrons from cytochrome b6 to ...
Energy 1
Energy 1

... What happens when not enough oxygen is supplied to the muscles? Hydrogens from glycolysis? Pyruvate to Lactate ...
Microscope File
Microscope File

... See also: fluorescence microscope, immunofluorescence, and confocal microscope The most recent developments in light microscope largely centre on the rise of fluorescence microscopy in biology. During the last decades of the 20th century, particularly in the post-genomic era, many techniques for flu ...
Periodic table Periodic Trends
Periodic table Periodic Trends

... You can think of this displacement reaction as being a competition between the chlorine in the bromine for an extra electron. Remember that the atomic radius increases down a group. The atomic radius of chlorine (100pm) is smaller than that of bromine (117pm) so chlorine has a stronger attraction fo ...
Slide 1
Slide 1

... 6.10 Most ATP production occurs by oxidative phosphorylation  Electrons from NADH and FADH2 travel down the electron transport chain to O2.  Oxygen picks up H+ to form water. ...
Slide 1
Slide 1

... Via the electron transport chain and chemiosmosis, each NADH can yield 2.5 ATP and each FADH2 1.5 ATP. From one molecule of glucose, glycolysis yields 2 NADH, the link reaction yields 2 NADH and the Krebs cycle yields 6 NADH and 2 FADH2. 10 × 2.5 = 25 ATP from NADH ...
Dark Reactions
Dark Reactions

... CO2 is fixed via the calvin cycle. Pyruvate returns to the mesophyll cell where it is reconverted into PEP and carboxylated to form oxaloacetate. The conversion of pyruvate to PEP is catalyzed by the plant enzyme pyruvate-Pi dikinase which takes pyruvate, ATP and Pi to form PEP, AMP and PPi.. Plants ...
[j26]Chapter 5#
[j26]Chapter 5#

... perform routine functions. These include such vital functions as the transport of materials across cell membranes; generating membrane potentials (chapter 6) and transmitting these electrical impulses (chapters 7-10); the synthesis and secretion of hormones (chapter 11); and muscle contraction (chap ...
semester iii
semester iii

... Decarboxylation of pyruvate, Reactions of citric acid cycle (with structures of intermediates), Calculation of energy yield (as ATP) of aerobic and anaerobic oxidation of carbohydrates, the mitochondria arrangement of electron carriers in the electron transport chain: Oxidative phosphorylation, site ...
Solutions - MIT OpenCourseWare
Solutions - MIT OpenCourseWare

... b) Which of these reactions, 1, 2, or 3 is most likely to proceed in the forward direction in the absence of an enzyme? If you do not have enough information to answer this question, write “Can’t tell” below. Explain your answer. Reaction 1 is most likely to proceed in the forward direction in the a ...
Carbohydrate metabolism
Carbohydrate metabolism

... What are Functions of NAD, NADP, FAD? Electron carriers Oxidation / reduction reactions NAD and catabolic reactions -- substrate oxidation -- H- used for ATP synthesis NADP and anabolic reactions -- substrate reduction -- e.g., --COOH to C=O to C-OH ...
Module 3 Practice Questions - Bangen Athletic Development
Module 3 Practice Questions - Bangen Athletic Development

... 46. Two trained athletes complete a training run. Athlete A performs their run at 90% of their VO2 Max and athlete B performs their run at 60% of their VO2 Max. Assuming they exercised for the same amount of time, which athlete would have a larger oxygen deficit and oxygen debt as a result of their ...
Brock Biology of Microorganisms, Twelfth Edition
Brock Biology of Microorganisms, Twelfth Edition

... Carbon  is  cycled  through  all  of  Earth’s  major  carbon  reservoirs,  i.e.,  atmosphere,  land,  oceans,  sediments,   rocks, and biomass Copyright Chap. 24.1© 2009 Pearson Education Inc., publishing as Pearson Benjamin Cummings ...
Chapter 14 - Electron Transport and Oxidative Phosphorylation 14.4
Chapter 14 - Electron Transport and Oxidative Phosphorylation 14.4

... • FMNH2 and FADH2 donate one electron at a time • All subsequent steps proceed by one e- transfers Prentice Hall c2002 ...
Atom The smallest part of an element that can exist on its own
Atom The smallest part of an element that can exist on its own

... • In B the 2p orbital is further from the nucleus • The 2p orbital is screened not only by the 1s2 electrons but also partially by the 2s2 electrons - These factors are strong enough to override the effect of the increased nuclear charge resulting in the IE to drop slightly • Screening identical and ...
< 1 ... 61 62 63 64 65 66 67 68 69 ... 286 >

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