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TetR protein family members are mostly transcriptional repressors, meaning that they prevent the expression of certain genes at the DNA level. These proteins can act on genes with various functions including antibiotic resistance, biosynthesis and metabolism, bacterial pathogenesis, and response to cell stress.
The IUPAC numerical multiplier is a system of prefixes used in chemistry to indicate the number of atoms or groups in a molecule.
This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Video game series Tetris Tetris -like games have been created on a large variety of platforms, including TI-83 series graphical calculators. Genre(s) Puzzle Developer(s) "Various" with supervisor for The Tetris Company Publisher(s) Various Creator(s) Alexey Pajitnov Platform(s) Various ...
The term is derived from the Greek tetra, meaning four, and morph, shape. The word comes from the Greek for "four forms" or "shapes". In English usage, each symbol may be described as a tetramorph in the singular, and a group as "the tetramorphs", but usually only in contexts where all four are included.
Computer-aided (or computer-assisted) assessment (CAA) includes all forms of assessments students' progress, whether summative (i.e. tests that will contribute to formal qualifications) or formative (i.e. tests that promote learning but are not part of a course's marking), delivered with the help of computers. [1]
The truncated tetrahedron is an Archimedean solid, meaning it is a highly symmetric and semi-regular polyhedron, and two or more different regular polygonal faces meet in a vertex. [6] The truncated tetrahedron has the same three-dimensional group symmetry as the regular tetrahedron, the tetrahedral symmetry T h {\displaystyle \mathrm {T ...
The Common Education Data Standards (CEDS) project is a United States national collaborative effort [1] to develop voluntary, common data standards for a key set of education data elements to streamline the exchange, comparison, and understanding of data within and across P-20W institutions and sectors. [2]
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