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The cycle comprises three enzyme-catalysed reactions. The first stage is the deamination of the purine nucleotide adenosine monophosphate (AMP) to form inosine monophosphate (IMP), catalysed by the enzyme AMP deaminase:
In molecular biology, protein catabolism is the breakdown of proteins into smaller peptides and ultimately into amino acids. Protein catabolism is a key function of digestion process. Protein catabolism often begins with pepsin , which converts proteins into polypeptides.
Schematic diagram showing anabolism and catabolism. Anabolism (/ ə ˈ n æ b ə l ɪ z ə m /) is the set of metabolic pathways that construct macromolecules like DNA or RNA from smaller units. [1] [2] These reactions require energy, known also as an endergonic process. [3] Anabolism is the building-up aspect of metabolism, whereas catabolism is
Metabolism (/ m ə ˈ t æ b ə l ɪ z ə m /, from Greek: μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms.The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks of proteins, lipids, nucleic acids, and some carbohydrates; and the ...
When the AP Reading is over for a particular exam, the free response scores are combined with the results of computer-scored multiple-choice questions based upon a previously announced weighting. The Chief Reader (a college or university faculty member selected by the Educational Testing Service and The College Board ) then meets with members ...
For example, collagen, found in connective tissue, bones, and cartilage, and keratin, found in nails, claws, and hair, have observed stiffnesses that are several orders of magnitude higher than that of elastin, [116] which is though to give elasticity to structures such as blood vessels, pulmonary tissue, and bladder tissue, among others.
The assessment and plan (abbreviated A/P" [1] or A&P) is a component of an admission note. Assessment includes a discussion of the differential diagnosis and supporting history and exam findings. The plan is typically broken out by problem or system. Each problem should include: brief summary of the problem, perhaps including what has been done ...
The phosphate/oxygen ratio, or P/O ratio, refers to the amount of ATP produced from the movement of two electrons through a defined electron transport chain, terminated by reduction of an oxygen atom.