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  2. Ethiopian General Secondary Education Certificate Examination

    en.wikipedia.org/wiki/Ethiopian_General...

    The Ethiopian General Secondary Education Certificate Examination (EGSECE) is a nationwide exam in Ethiopia that is given to students after final year of secondary school education. [1] Students take EGSECE usually that would eligible to continue eleventh grade or college in preparatory schools. Since 2001, the Ethiopian Secondary Education ...

  3. Category:Matrices (biology) - Wikipedia

    en.wikipedia.org/wiki/Category:Matrices_(biology)

    Download as PDF; Printable version; In other projects Wikidata item; ... Pages in category "Matrices (biology)" The following 8 pages are in this category, out of 8 ...

  4. Mitochondrial matrix - Wikipedia

    en.wikipedia.org/wiki/Mitochondrial_matrix

    Mitochondrial matrix has a pH of about 7.8, which is higher than the pH of the intermembrane space of the mitochondria, which is around 7.0–7.4. [5] Mitochondrial DNA was discovered by Nash and Margit in 1963. One to many double stranded mainly circular DNA is present in mitochondrial matrix. Mitochondrial DNA is 1% of total DNA of a cell.

  5. Substitution matrix - Wikipedia

    en.wikipedia.org/wiki/Substitution_matrix

    One PAM unit is defined as 1% of the amino acid positions that have been changed. To create a PAM1 substitution matrix, a group of very closely related sequences with mutation frequencies corresponding to one PAM unit is chosen. Based on collected mutational data from this group of sequences, a substitution matrix can be derived.

  6. Matrix (biology) - Wikipedia

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

    In biology, matrix (pl.: matrices) is the material (or tissue) in between a eukaryotic organism's cells. The structure of connective tissues is an extracellular matrix. Fingernails and toenails grow from matrices. It is found in various connective tissues. It serves as a jelly-like structure instead of cytoplasm in connective tissue.

  7. Evolutionary grade - Wikipedia

    en.wikipedia.org/wiki/Evolutionary_grade

    The green box (central) may represent an evolutionary grade (paraphyletic), a group united by conservative anatomical and physiological traits rather than phylogeny. The flanking red and blue boxes are clades (i.e., complete monophyletic subtrees). A grade is a taxon united by a level of morphological or physiological complexity.

  8. Inner mitochondrial membrane - Wikipedia

    en.wikipedia.org/wiki/Inner_mitochondrial_membrane

    In S. cerevisiae mitochondria, phosphatidylcholine makes up 38.4% of the IMM, phosphatidylethanolamine makes up 24.0%, phosphatidylinositol 16.2%, cardiolipin 16.1%, phosphatidylserine 3.8%, and phosphatidic acid 1.5%. [6] In the inner mitochondrial membrane, the protein-to-lipid ratio is 80:20, in contrast to the outer membrane, which is 50:50 ...

  9. Distance matrices in phylogeny - Wikipedia

    en.wikipedia.org/wiki/Distance_matrices_in_phylogeny

    Distance-matrix methods of phylogenetic analysis explicitly rely on a measure of "genetic distance" between the sequences being classified, and therefore they start with a multiple sequence alignment (MSA) as an input. From it, they construct an all-to-all matrix describing the distance between each sequence pair.