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  2. List of unsolved problems in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Developmental psychobiology posed this question since the lack of knowledge about the precise coordination of all cells, even those not related anatomically, in space and time during the embryonic period does not allow us to understand what forces at the cellular level coordinate four very general classes of tissue deformation, namely: tissue ...

  3. Basic State Exam (Russia) - Wikipedia

    en.wikipedia.org/wiki/Basic_State_Exam_(Russia)

    Questions 1–20 require selecting one correct answer from four options. Question 21 requires comparing two social objects or phenomena (indicating two similarities and two differences). Question 22 is a matching task. Questions 23 and 24 test the ability to work with statistical materials (diagrams or tables).

  4. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    However, the Term-I examination was criticised by many for having wrong answer keys, tough question papers and wrong or controversial questions, with a question being dropped in Sociology exam of class 12 and a paragraph in the English Language and Literature exam for class 10 by CBSE following which CBSE dropped the experts who set the ...

  5. Board examination - Wikipedia

    en.wikipedia.org/wiki/Board_examination

    The 2025 CBSE board examination for Class 10 were held from 15 February till 18 March and from 15 February till 4 April for class 12. The usual starting time for each exam was 10:30 am( IST ) but depending on the length and/or maximum marks for the subject, the finishing time was either 12:30 pm ( IST ) (2 hours, shorter exams, usually 40-50 ...

  6. Taxonomy (biology) - Wikipedia

    en.wikipedia.org/wiki/Taxonomy_(biology)

    Systematic biology (hereafter called simply systematics) is the field that (a) provides scientific names for organisms, (b) describes them, (c) preserves collections of them, (d) provides classifications for the organisms, keys for their identification, and data on their distributions, (e) investigates their evolutionary histories, and (f ...

  7. Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia

    Several languages of Wikipedia also maintain a reference desk, where volunteers answer questions from the general public. According to a study by Pnina Shachaf in the Journal of Documentation , the quality of the Wikipedia reference desk is comparable to a standard library reference desk , with an accuracy of 55 percent.

  8. Biostatistics - Wikipedia

    en.wikipedia.org/wiki/Biostatistics

    The research question will define the objective of a study. The research will be headed by the question, so it needs to be concise, at the same time it is focused on interesting and novel topics that may improve science and knowledge and that field. To define the way to ask the scientific question, an exhaustive literature review might be ...

  9. Protein - Wikipedia

    en.wikipedia.org/wiki/Protein

    [12] The difficulty in purifying proteins impeded work by early protein biochemists. Proteins could be obtained in large quantities from blood, egg whites, and keratin, but individual proteins were unavailable. In the 1950s, the Armour Hot Dog Company purified 1 kg of bovine pancreatic ribonuclease A and made it freely available to scientists ...