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  2. Escherichia virus T4 - Wikipedia

    en.wikipedia.org/wiki/Escherichia_virus_T4

    The virus also codes for unique DNA repair mechanisms. [28] The T4 phage head is assembled empty around a scaffolding protein, which is later degraded. Consequently, the DNA needs to enter the prohead through a tiny pore, which is achieved by a hexamer of gp17 interacting with DNA first, which also serves as a motor and nuclease.

  3. Khan Academy - Wikipedia

    en.wikipedia.org/wiki/Khan_Academy

    On its IRS form 990, the organization reported $31 million in revenues in 2018 and $28 million in 2019, including $839,000 in 2019 compensation for Khan as CEO. [ 15 ] In 2010, Google donated $2 million for creating new courses and translating content into other languages, as part of their Project 10 100 program. [ 16 ]

  4. Abeka - Wikipedia

    en.wikipedia.org/wiki/Abeka

    Some Abeka textbooks have been criticized by educators as lacking academic rigor and taking contrary or reactive positions toward their subject matter. Experts from the University of Florida and University of Central Florida in 2018 criticized the content of Abeka textbooks as being markedly more simple and less challenging than the content of comparable textbooks used in public education.

  5. List of schools in Georgia (U.S. state) - Wikipedia

    en.wikipedia.org/wiki/List_of_schools_in_Georgia...

    28 Clarke County. Toggle Clarke County subsection. 28.1 Athens. ... Bacon County Primary School (pre-school - grade 2) Baker County. Baker County School, Newton;

  6. Standardized test - Wikipedia

    en.wikipedia.org/wiki/Standardized_test

    Most everyday quizzes and tests taken by students during school meet the definition of a standardized test: everyone in the class takes the same test, at the same time, under the same circumstances, and all of the tests are graded by their teacher in the same way.

  7. Last universal common ancestor - Wikipedia

    en.wikipedia.org/wiki/Last_universal_common_ancestor

    It also reduced CO 2 and oxidized H 2 (methanogenesis or acetogenesis) via acetyl-thioesters. [24] [25] By phylogenetic bracketing, analysis of the presumed LUCA's offspring groups, LUCA appears to have been a small, single-celled organism. It likely had a ring-shaped coil of DNA floating freely within the cell. Morphologically, it would likely ...

  8. Irreducible complexity - Wikipedia

    en.wikipedia.org/wiki/Irreducible_complexity

    Irreducible complexity (IC) is the argument that certain biological systems with multiple interacting parts would not function if one of the parts were removed, so supposedly could not have evolved by successive small modifications from earlier less complex systems through natural selection, which would need all intermediate precursor systems to have been fully functional. [1]

  9. Modern synthesis (20th century) - Wikipedia

    en.wikipedia.org/wiki/Modern_synthesis_(20th...

    Inputs to the modern synthesis, with other topics (inverted colours) such as developmental biology that were not joined with evolutionary biology until the turn of the 21st century [103] Biologists, alongside scholars of the history and philosophy of biology, have continued to debate the need for, and possible nature of, a replacement synthesis.