• 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
Introductory Microbiology Chap. 5 Chapter Outlines/Notes I
Introductory Microbiology Chap. 5 Chapter Outlines/Notes I

... End of Chap. ‘Study Questions’ Review #2 a-c & Critical Thinking #2 1. Example of Competitive Inhibition and its use in Medicine: Sulfa Drugs All cells require folic acid for growth. Folic acid (vitamin B9) in food diffuses or is transported into human cells. However, folic acid cannot cross bacteri ...
Biological Molecules
Biological Molecules

... What process do you see happening here to create this peptide bond between the two amino acids? What is the scientific term for many monomers linked together? ...
Chapter 04 - Lecture Outline
Chapter 04 - Lecture Outline

... Name the two major divisions of metabolism, and compare and contrast them in terms of a general descriptive sentence, additional descriptive terms, how energy is involved, whether bonds are formed or broken, and how water is involved. Also write a chemical reaction for each and give an example impor ...
Cellular Respiration
Cellular Respiration

...  Glycolysis – always occurs in the cytoplasm/cytosol of the cell & produces 2 ATP’s (Four molecules of ATP are produced during glycolysis, but 2 molecules are consumed in activating the glucose.); glycolysis is an anaerobic process and does NOT need oxygen. All living organisms go through glycolysi ...
lec---10
lec---10

... • These components include a hydrogen atom, a carboxyl group, an amino group, and a variable R group (or side chain). General Formula of the ...
5-Metabolism of Pyrimidine Nucleotides
5-Metabolism of Pyrimidine Nucleotides

... Step-1: dUTP is hydrolyzed to dUMP and PPi by the enzyme dUTP diphosphohydrolase (dUTPase)  Step-2: dUMP is then methylated to form dTMP  Step-3 & 4: dTMP is then phosphorylated with ATP in two rounds to form dTTP ...
Amino acid sequence alignment of a `small` citrate synthase from
Amino acid sequence alignment of a `small` citrate synthase from

... Escherichia coli [4] and Bacillus subtilis [S], organisms considered for many years to contain a single molecular form of CS. There is also evidence that CS isoenzymes may have different metabolic roles [6]. Citrate synthase isoenzymes have recently been purified to homogeneity, from Pseudomonas aer ...
Artificial Photosynthesis - The Mars Homestead Project
Artificial Photosynthesis - The Mars Homestead Project

... Calcium Magnesium Potassium Sodium Iron Phosphorus ...
Chapter 3
Chapter 3

... against the effectors of human sleeping sickness and the animal trypanosomiasis; T . b . b r u c e i, T .b e v a n s i and T . b . e q u i p e r i d u m . M e l a r s o p r o l is still the drug of choice in late stage trypanosomiasis. It is, however, associated with severe side effects, which are o ...
Nucleic Acid metabolism De Novo Synthesis of Purine
Nucleic Acid metabolism De Novo Synthesis of Purine

... phase of control is involved with maintaining an appropriate balance (not equality) between ATP and GTP. Each one stimulates the synthesis of the other by providing the energy. Feedback inhibition also controls the branched portion as GMP inhibits the conversion of IMP to XMP and AMP inhibits the co ...
CHAPTER 4: CELLULAR METABOLISM
CHAPTER 4: CELLULAR METABOLISM

... 2. The chemical reactions in CR must occur in a particular sequence, with each reaction being catalyzed by a different (specific) enzyme. There are three major series of reactions: a. glycolysis b. citric acid cycle c. electron transport chain 3. Some enzymes are present in the cell’s cytoplasm, so ...
Biological Molecules
Biological Molecules

CH 2 -CH 2 -CH 2 -CH 2 -CH 2
CH 2 -CH 2 -CH 2 -CH 2 -CH 2

... rate of a reaction, the following events must take place. 1. The enzyme must form a temporary association with the substance or substances whose reaction rate it affects. These substances are known as substrates. 2. The association between enzyme and substrate is thought to form a close physical ass ...
III. Cellular Respiration
III. Cellular Respiration

... 4. Most cells only have a small quantity of ATP (just a few seconds worth)! a. ATP is not efficient at storing energy for a long time. b. Cells rely on the ability to make more ATP from ADP by using energy from carbohydrates and lipids. ...
Protein mteabolism L..
Protein mteabolism L..

... Folic acid is a member of vitamin B complex. It plays an important role in synthesis of purines and thymidine monophosphate (TMP) and so DNA synthesis. Deficiency of folic acid leads to diminished DNA synthesis and inhibit cell division resulting in meglaoblastic anemia (accumulation of large, immat ...
Al - Iraqia university/ college of medicine
Al - Iraqia university/ college of medicine

... atom to a complicated ring compound. Some R groups are polar & some are not. Also, amino acid cysteine ends with an —SH group, which often serves to connect one chain of amino acids to another by a disulfide bond, —S—S—. Several amino acids commonly found in cells are shown Fig.2.21. Peptides : Two ...
ATP citrate lyase – biology and implication in human
ATP citrate lyase – biology and implication in human

PENTOSE PHOSPHATE PATHWAY
PENTOSE PHOSPHATE PATHWAY

... The hexose monophosphate pathway has several names just to confuse you. It’s called the hexose monophosphate shunt or pathway (HMP shunt or pathway), or the pentose phosphate pathway, or the phosphogluconate pathway (Fig. 15-1). The pathway in its full form is complicated and has complicated stoichi ...
Study guide 4 and 6
Study guide 4 and 6

... why plants make oxygen). What does the cell use these electrons for (photosystem II)? After this, instead of the electrons then being put into a terminal electron acceptor (like oxygen for aerobic respirators), it gets re-powered by more photons and then can either be used to power the proton pump o ...
Lecture6
Lecture6

... to this most abundant class of lipids. Triacyl glycerol plays no other role than energy storage. Most of the energy derived from fat comes from the oxidation of the constituent fatty acids. The brain is the only tissue that is unable to use fatty acid as a significant energy supply. However, under c ...
Bacterial Fermentation
Bacterial Fermentation

... and grow not only on glucose but also on other substrates such as fructose, galactose, mannose, saccharose and pentoses. With these substrates, certain variations of the fermentation pathways occur. For example, pentoses are fermented by facultative homofermentative organisms via the phosphoketolase ...
Fatty Acid Metabolism - chem.uwec.edu
Fatty Acid Metabolism - chem.uwec.edu

... transferring the CoASH from succinyl–CoA. It is then split into two Acetyl–CoA by a thiolase reaction ...
1 - Rosshall Academy
1 - Rosshall Academy

... State that proteins specific to the body’s needs are built up within the body State that during digestion the hydrolysis of dietary proteins produces amino acids Identify the structure of amino acids obtained from the hydrolysis of proteins ...
Introduction to Metabolism
Introduction to Metabolism

... Metabolic pathways consist of sequential steps. There are more than 2,000 metabolic reactions, each catalyzed by a distinct enzyme. The enzymes may be physically separate requiring the intermediate metabolites to diffuse from one active site to the next or enzymes may form a multienzyme complex whe ...
Photosynthesis
Photosynthesis

... • When RuBP is oxidized, it produces only 1 molecule of 3-PGA. • This process is called photorespiration. ...
< 1 ... 244 245 246 247 248 249 250 251 252 ... 483 >

Citric acid cycle



The citric acid cycle – also known as the tricarboxylic acid (TCA) cycle or the Krebs cycle – is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidation of acetate derived from carbohydrates, fats and proteins into carbon dioxide and chemical energy in the form of adenosine triphosphate (ATP). In addition, the cycle provides precursors of certain amino acids as well as the reducing agent NADH that is used in numerous other biochemical reactions. Its central importance to many biochemical pathways suggests that it was one of the earliest established components of cellular metabolism and may have originated abiogenically.The name of this metabolic pathway is derived from citric acid (a type of tricarboxylic acid) that is consumed and then regenerated by this sequence of reactions to complete the cycle. In addition, the cycle consumes acetate (in the form of acetyl-CoA) and water, reduces NAD+ to NADH, and produces carbon dioxide as a waste byproduct. The NADH generated by the TCA cycle is fed into the oxidative phosphorylation (electron transport) pathway. The net result of these two closely linked pathways is the oxidation of nutrients to produce usable chemical energy in the form of ATP.In eukaryotic cells, the citric acid cycle occurs in the matrix of the mitochondrion. In prokaryotic cells, such as bacteria which lack mitochondria, the TCA reaction sequence is performed in the cytosol with the proton gradient for ATP production being across the cell's surface (plasma membrane) rather than the inner membrane of the mitochondrion.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report