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  2. Structural analog - Wikipedia

    en.wikipedia.org/wiki/Structural_analog

    A structural analog, also known as a chemical analog or simply an analog, is a compound having a structure similar to that of another compound, but differing from it in respect to a certain component. [1] [2] [3] It can differ in one or more atoms, functional groups, or substructures, which are replaced with other atoms, groups, or ...

  3. Terrestrial analogue site - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_analogue_site

    Volcanic analogue site to test human robotic (co)operation inside a lava tube. Set as a research-based mission, two missions have been held thus far, of several days each. Its main purpose is to define the feasibility of portable systems and their deployment inside lava tubes. Moon Rocky ground, lava flows, lava tubes. Mars

  4. AP Human Geography - Wikipedia

    en.wikipedia.org/wiki/AP_Human_Geography

    Advanced Placement (AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, AP HuG, AP Human, HuGS, AP HuGo, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered by the College Board. [1]

  5. Rock analogs for structural geology - Wikipedia

    en.wikipedia.org/wiki/Rock_analogs_for...

    This is a compilation of the properties of different analog materials used to simulate deformational processes in structural geology. Such experiments are often called analog or analogue models. The organization of this page follows the review of rock analog materials in structural geology and tectonics of Reber et al. 2020. [1]

  6. Functional analog (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Functional_analog_(chemistry)

    Functional analogs are not necessarily structural analogs with a similar chemical structure. [1] An example of pharmacological functional analogs are morphine, heroin and fentanyl, which have the same mechanism of action, but fentanyl is structurally quite different from the other two with significant variance in dosage. [2]

  7. Nucleic acid analogue - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_analogue

    Nucleic acid analogues are compounds which are analogous (structurally similar) to naturally occurring RNA and DNA, used in medicine and in molecular biology research. Nucleic acids are chains of nucleotides, which are composed of three parts: a phosphate backbone, a pentose sugar, either ribose or deoxyribose , and one of four nucleobases .

  8. Transition state analog - Wikipedia

    en.wikipedia.org/wiki/Transition_state_analog

    Transition state analogs (transition state analogues), are chemical compounds with a chemical structure that resembles the transition state of a substrate molecule in an enzyme-catalyzed chemical reaction. Enzymes interact with a substrate by means of strain or distortions, moving the substrate towards the transition state. [1]

  9. List of designer drugs - Wikipedia

    en.wikipedia.org/wiki/List_of_designer_drugs

    Some supposed nootropic substances are compounds and analogues of choline, a precursor of acetylcholine (a neurotransmitter) and phosphatidylcholine (a structural component of cell membranes). Alpha-GPC – L-alpha glycerylphosphorylcholine has been studied only in the context of cognitive performance alongside other substances such as caffeine.