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A Level only CIE 9679: Afrikaans: A Level only CIE 9680: Arabic: A Level only CIE 9686: Urdu – Pakistan only: A Level only CIE 9687: Hindi: A Level only CIE 9688: Marathi: A Level only CIE 9689: Tamil: A Level only CIE 9690: Telugu: A Level only CIE 9691: Computing: CIE 9692? CIE 9693: Marine Science: CIE 9694: Thinking Skills: available from ...
Enzymes from processes that take place in the matrix. The citric acid cycle is facilitated by pyruvate dehydrogenase, citrate synthase, aconitase, isocitrate dehydrogenase, α-ketoglutarate dehydrogenase, succinyl-CoA synthetase, fumarase, and malate dehydrogenase. [2]
The Higher School Certificate is an academic qualification in Mauritius awarded upon the completion of Grade 13, the final stage of secondary school.The qualification is awarded upon earning passing marks on the A-level exams administered by the Mauritius Examinations Syndicate, in conjunction with the University of Cambridge Local Examinations Syndicate of the Cambridge International ...
It has been called "the most beautiful experiment in biology". [1] Meselson and Stahl decided the best way to trace the parent DNA would be to tag them by changing one of its atoms. Since nitrogen is present in all of the DNA bases, they generated parent DNA containing a heavier isotope of nitrogen than would be present naturally. This altered ...
Fluid mosaic model of a cell membrane. The fluid mosaic model explains various characteristics regarding the structure of functional cell membranes.According to this biological model, there is a lipid bilayer (two molecules thick layer consisting primarily of amphipathic phospholipids) in which protein molecules are embedded.
The lactose operon (lac operon) is an operon required for the transport and metabolism of lactose in E. coli and many other enteric bacteria.Although glucose is the preferred carbon source for most enteric bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available through the activity of β-galactosidase. [1]
The mitotic index is a measure of cellular proliferation. [1]It is defined as the percentage of cells undergoing mitosis in a given population of cells. Mitosis is the division of somatic cells into two daughter cells.
In biology, membrane fluidity refers to the viscosity of the lipid bilayer of a cell membrane or a synthetic lipid membrane. Lipid packing can influence the fluidity of the membrane. Viscosity of the membrane can affect the rotation and diffusion of proteins and other bio-molecules within the membrane, there-by affecting the functions of these ...