NEET MDS Shorts
45163
Biochemistry
Glycolysis is a metabolic process that occurs in the cytoplasm of the cell.
The process is central to the conversion of glucose into energy in the form of
adenosine triphosphate (ATP) and is a fundamental part of cellular respiration.
1. Cytoplasm: Glycolysis takes place in the cytoplasm of the cell. The cytoplasm
is the fluid-filled space between the cell membrane and the nucleus (and other
organelles in eukaryotes) where various metabolic reactions occur. This process
involves a series of enzymatic reactions that break down one molecule of glucose
into two molecules of pyruvate, yielding two net molecules of ATP and two
molecules of NADH (a reduced form of nicotinamide adenine dinucleotide) along
with some other byproducts.
2. Mitochondrion: Although glycolysis does not occur in the mitochondrion, the
mitochondrion plays a crucial role in the subsequent stages of glucose
metabolism. After glycolysis, the pyruvate molecules produced in the cytoplasm
can be transported into the mitochondria, where they are further processed in
the citric acid cycle (also known as the Krebs cycle or TCA cycle) and the
electron transport chain to produce more ATP.
31789
Biochemistry
Gout is a form of arthritis caused by the accumulation of uric acid crystals,
specifically sodium urate crystals, in the joints. The body produces uric acid
as a waste product during the metabolism of purines, which are substances found
in certain foods and also synthesized by the body. High levels of uric acid can
lead to the formation of these crystals, which cause inflammation and pain in
the affected joints. Urea (Answer 1) is a waste product formed from the
metabolism of proteins and amino acids, while guanine (Answer 3) and
hypoxanthine (Answer 4) are purine bases involved in nucleotide metabolism, but
they do not directly form the crystals seen in gout.
38738
BiochemistryGlutamate-pyruvate trans-aminase is predominantly present In Liver
42310
BiochemistryRate limiting step of Kreb's cycle is catalysed by isocitrate dehydrogenase
83015
Biochemistry
Vitamin D is crucial for the maintenance of bone health as it aids in the
absorption of calcium from the digestive tract and facilitates the incorporation
of calcium into bones. A deficiency in vitamin D can lead to osteoporosis, a
condition characterized by weak and porous bones that are more susceptible to
fractures, which is common in the elderly. While vitamin A (Answer 1) is
important for vision and skin health, and niacin (Answer 2) and thiamine (Answer
3) have roles in energy metabolism and nerve function, respectively, vitamin D's
primary role in calcium homeostasis makes it most relevant to bone loss in older
individuals.
18233
BiochemistryMethionine is sulphur containing AminoAcid
82127
Biochemistry
Following digestion, the products of digestion enter the bloodstream.
These include glucose, amino acids, triacylglycerides packaged into chylomicrons from the intestine, and very low density lipoproteins from the liver.
The hormone of anabolism, insulin, is also elevated because of the signaling of the glucose and amino acids in the blood, which allows release of insulin from the β-cells of the pancreas. Insulin aids the movement of glucose and amino acids into cells. In contrast, all the hormones and energy sources associated with catabolism are decreased in the blood during this time. Long-chain fatty acids and glycerol released by lipolysis from adipocytes are not elevated. Glucagon and epinephrine are not released. The only time glucose levels rise significantly above approximately 80 mM is following a well-balanced meal when glucose is obtained from the diet. The concentration of glucose reaches a peak 30 to 45 minutes after a meal and returns to normal within 2 hours after eating. This response of blood glucose after eating (mimicked by giving 50 g of oral glucose) is the basis for the glucose tolerance test. In the event of insulin deficiency (diabetes mellitus), the peak glucose concentration is abnormally high and its return to normal is delayed.
82700
Biochemistry
Anemia is a condition characterized by a decrease in the number of red blood
cells or a reduction in their oxygen-carrying capacity. Vitamin B12 and folic
acid are essential for the production of red blood cells. Deficiencies in these
vitamins can lead to megaloblastic anemia, where the bone marrow produces
abnormally large and immature red blood cells.
40041
BiochemistryThe reaction used for estimating free amino, groups in proteins is Deamination with HNO2
64826
BiochemistryProthrombin production in the liver is dependent upon Vitamin K intake