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Oxaloacetate has two main roles. It is an intermediate which is consumed in gluconeogenesis and it is also a key intermediate in the citric acid cycle where it fuses with acetyl CoA to form citrate, finally being regenerated by the cycle. Thus pyruvate carboxylase produces oxaloacetate for gluconeogenesis but also must maintain oxaloacetate stages for citric acid cycle function. Intended for the latter reason the activity of pyruvate carboxylase depends absolutely on the presence of acetyl CoA; the biotin prosthetic set of the enzyme cannot be carboxylated unless acetyl CoA is bound to the enzyme. This allosteric activation by acetyl CoA ensures which more oxaloacetate is made when excess acetyl CoA is available. In this role of maintaining the level of citric acid cycle intermediates and the pyruvate carboxylase reaction is learn to be anaplerotic which is filling up.
Determine the blood plasma levels of glucagon A. production in the liver increases in response to an increase in blood plasma levels of glucagon. B. is secreted by alpha-isl
Biologists established that new cells Consequent to this doctrine, biologists established that new cells are formed by cell division and by the end of the nineteenth century, t
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Schizocoelous pattern – Coelom There are two patterns of coelom formation in animals schizocoelous and enterocoelous. In schizocoelous pattern, two teloblasts cells (primordi
Explain about the Cancer? The word 'cancer' comes from the Latin for crab. It refers 90 any malignant growth or tumor caused by abnormal and uncontrolled cell division. Body ce
PLACENTA - A common tissue of foetus & mother (uterus) which is physical, physiological & endocrinal connection is known as placenta. FUNCTIO N - To provide nutrients
Q. What is a population? In the Biology a population is a set of individuals of the same species living in a given place and in a given time.
The following histograms were produced using flow cytometry after labelling B-cell lymphocytes with propidium iodide. Histogram A is from a healthy individual while Histogram B is
Explain about the Macro Minerals? Previously we learnt about the structure, properties, deficiencies/toxicity and recommended dietary intakes of several vitamins. In this unit,
Platyhelminthes - Nervous Systems Among Platyhelminthes, you will observe that turbellarians have a brain and three to five pairs of longitudinal nerve cords extending from th
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