• 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
BIOCHEMISTRY AND MOLECULAR BIOLOGY Problem Unit Two
BIOCHEMISTRY AND MOLECULAR BIOLOGY Problem Unit Two

... b. Simply, fluoride strongly inhibits a key enzyme for energy production. c. The negatively charged phosphate group of the substrate probably coordinates with the Mg2+ or Mn2+ ions, i.e., electrostatic interaction of substrate to the active site. ...
The Citric Acid Cycle
The Citric Acid Cycle

... transferred to oxygen to form water in a series of oxidation–reduction reactions. This transfer is highly exergonic, and the released energy is used to synthesize ATP. We will focus on the citric acid cycle in this section, leaving oxidative phosphorylation until Section 9. The citric acid cycle is ...
physical setting chemistry
physical setting chemistry

... are found in the nucleus. (2) They are positive subatomic particles are found surrounding the nucleus. (3) They are negative subatomic particles are found in the nucleus. (4) They are negative subatomic particles are found surrounding the nucleus. ...
National German competition
National German competition

... To become a member of the German IChO-team you have to be successful in four rounds. The problems to be solved in the 1st round are sent to all highschools. To solve the problems the students may use all resources available, e.g. textbooks etc. All the students who solve about 70% will receive the p ...
SCH4U TEXT BOOK
SCH4U TEXT BOOK

... polar CO bonds, but it is not a polar molecule. On the other hand, a water molecule has two polar OH bonds, and it is a polar molecule. How do you predict whether or not a molecule that contains polar bonds has an overall molecular polarity? To determine molecular polarity, you must consider the s ...
PROPERTIES OF CARBOXYLIC ACIDS
PROPERTIES OF CARBOXYLIC ACIDS

... their formation. When Wöhler, in 1828, made urea from inorganic salt, ammonium cyanate, NH4CNO, he changed the definition of organic chemistry. Today, the term organic chemistry refers to the chemistry of millions of carbon compounds. Theory of chemical structure of organic compounds was formulated ...
content - Thesis Scientist
content - Thesis Scientist

... P or As, the dopant atom forms four covalent bonds like a Si or Ge atom but the fifth electron, not used in bonding, becomes delocalised and contribute its share towards electrical conduction. Thus silicon or germanium doped with P or As is called n-type semiconductor, n indicative of negative, sinc ...
AS Chemistry Teacher Handbook
AS Chemistry Teacher Handbook

... exists when a pair of electrons is shared and that, if both electrons are contributed by the same atom, this is co-ordinate bonding. ...
08 Redox Reactions
08 Redox Reactions

... no useful electrical work could be obtained. In these reactions, chemical energy appears as heat. If the transferance of electrons from zinc to copper ions is allowed to occur through some metallic wires, useful electrical work could be performed. Such redox reactions are called Indirect redox react ...
Contents - Elsevier
Contents - Elsevier

Enzyme Mechanisms
Enzyme Mechanisms

... in which two (or more) substrates are directed down potential-energy gradients to positions where they are close to one another. Thus the enzyme is able to defeat the entropic difficulty of bringing substrates ...
Substrate Specificity and Mechanism from the Structure of
Substrate Specificity and Mechanism from the Structure of

File
File

... Permission to reproduce items where third party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included ...
CHAPTER 9 Notes
CHAPTER 9 Notes

... theoretical yield: Amount of product one should get based on the chemical equation and the amount of reactants present -One generally calculates this in grams from info given Actual yield: Amount of produce one actually obtains -Generally smaller than the theoretical yield because of impurities and ...
Section 1.3 - The Student Room
Section 1.3 - The Student Room

... formed from its elements, with both the compound and its elements being in their standard states (ie their most stable state at 1 atmosphere pressure and at a stated temperature, often 298 K). ...
Fatty Acid Biosynthesis
Fatty Acid Biosynthesis

... subunits are shown in the figure below. The α subunits contain the β-ketoacyl-ACP synthase (KSase) domain and the β-ketoacyl reductase domain. The β subunit contains the acetyl transferase domain, the malonyl transferase domain, the β-hydroxyacyl dehydrogenase domain and the enoyl reductase domain. ...
Exploring the directionality of Escherichia coli formate
Exploring the directionality of Escherichia coli formate

... within the HycG, HycF, and HycB proteins to a selenium­and molybdenum-­ dependent formate dehydrogenase subunit encoded by the fdhF gene (Sauter et al. 1992; McDowall et al. 2014). The formate dehydrogenase component of FHL is commonly referred to as FDH-­H (formate dehydrogenase linked to hydrogen ...
Continuous Production of Ethanol via a Magnetically Stabilized
Continuous Production of Ethanol via a Magnetically Stabilized

... must be designed to run on 85 percent gas and 15 percent ethanol. A flex-fuel vehicle has also been designed which can run on 85 percent ethanol and 15 percent gasoline [7]. The current method of producing ethanol has been found to be too expensive, requires too much energy and is linked to environ ...
Go FIGure
Go FIGure

Instructor`s Resource Manual
Instructor`s Resource Manual

... removed a burden from the instructor, who can now concentrate his or her attention on the main requirements of teaching—motivating the students, emphasizing important points, discussing difficult concepts, drawing parallels, and so forth. In the introduction to your course, it may be well to note fo ...
Probing Allosteric Binding Sites of the Maize
Probing Allosteric Binding Sites of the Maize

... unsolved, structures of a nonnative, low-activity form of the potato tuber (Solanum tuberosum) AGPase (small subunit homotetramer) reported previously by others revealed that several sulfate ions bind to each enzyme. These sites are also believed to interact with allosteric regulators such as inorga ...
Learning Objectives: At the end of the lecture the student should be
Learning Objectives: At the end of the lecture the student should be

... • Two distinct globin chains (each with its individual heme molecule) combine to form hemoglobin. • One of the chains is designated alpha. • The second chain is called "non-alpha". • With the exception of the very first weeks of embryogenesis, one of the globin chains is always alpha. • A number of ...
chemical equilibrium type 1
chemical equilibrium type 1

... An equilibrium can be established either starting from reactants or starting from products. In fact, one technique that is used to determine whether a reaction it truly at equilibrium is to approach equilibrium starting with reactants in one experiment and starting with products in another. If the s ...
The Biosynthesis of N-Phosphorylcreatine: an Investigation of the
The Biosynthesis of N-Phosphorylcreatine: an Investigation of the

... under conditions similar to those described by these authors. Further fractionation, however, caused a loss of activity and, since this could be recovered in greater than additive amounts by recombination of fractions, it seemed that more than one enzyme was involved. Furthermore, it has been found ...
Problem 1-2
Problem 1-2

... Rate law constants can be determined by the method of relaxation. Thereby the system which is already in equilibrium is disturbed e.g. by a sudden change of temperature. Then rate constants can be determined by the observation of the adjustment of the new ...
< 1 ... 5 6 7 8 9 10 11 12 13 ... 551 >

Photosynthetic reaction centre

A photosynthetic reaction center is a complex of several proteins, pigments and other co-factors assembled together to execute the primary energy conversion reactions of photosynthesis. Molecular excitations, either originating directly from sunlight or transferred as excitation energy via light-harvesting antenna systems, give rise to electron transfer reactions along a series of protein-bound co-factors. These co-factors are light-absorbing molecules (also named chromophores or pigments) such as chlorophyll and phaeophytin, as well as quinones. The energy of the photon is used to promote an electron to a higher molecular energy level of a pigment. The free energy created is then used to reduce a chain of nearby electron acceptors, which have subsequently higher redox-potentials. These electron transfer steps are the initial phase of a series of energy conversion reactions, ultimately resulting in the production of chemical energy during photosynthesis.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report