Which Vitamin is required to make the building blocks for collagen ?
Vitamin C is required to make the building blocks for collagen
'corkscrew' hair growth seen in which vitamin deficiency?
Vitamin C Deficiency - spongy gums, 'corkscrew' hair growth, and poor wound healing
Which sugar in Breast milk help to prevent infectious diseases?
Breast milk contains a unique type of sugars, human milk oligosaccharides (HMOs), which are not present in infant formula. HMOs are not digested by the infant but help to make up the intestinal flora.
They act as decoy receptors that block the attachment of disease causing pathogens, which may help to prevent infectious diseases.
Ascorbic acid is required as a cofactor for which of the following enzyme?
Ascorbic acid is required as a cofactor for prolyl hydroxylase and lysyl hydroxylase. These two enzymes are responsible for the hydroxylation of the proline and lysine amino acids in collagen.
Hydroxyproline and hydroxylysine are important for stabilizing collagen by cross-linking the propeptides in collagen.
The metabolically active form of Vitamin B6 is -
Pyridoxal 5′-phosphate - metabolically active form of vitamin B6.
involved in many aspects of macronutrient metabolism, neurotransmitter synthesis, histamine synthesis, hemoglobin synthesis and function, and gene expression.
Which Vitamin is required for the conversion of tryptophan to niacin?
Vitamin B6 is required for the conversion of tryptophan to niacin
Which vitamin plays a cofactor role in releasing selenium from selenohomocysteine to produce hydrogen selenide?
Vitamin B6 plays a cofactor role in releasing selenium from selenohomocysteine to produce hydrogen selenide, which can then be used to incorporate selenium into selenoproteins.
Major products of vitamin B6 metabolism which is excreted in the urine -
Major products of vitamin B6 metabolism that is excreted in the urine is 4-pyridoxic acid.
All of the following are the biochemical tests most widely used for Vitamin B6 Deficiency EXCEPT?
Biochemical tests most widely used -
Activation coefficient for the erythrocyte enzyme aspartate aminotransferase,
Plasma PLP concentrations,
Urinary excretion of vitamin B6 degradation products, specifically urinary PA.
Which of the following is FALSE for Megavitamin-B6 syndrome is -
Also known as hypervitaminosis B6
Glycogen content of liver is -
The glycogen content of liver is 10 g/100 g tissue which is more than in the skeletal muscle (1–2 g/100 g).
But the total quantity of muscle glycogen is more than liver glycogen because of the larger muscle mass.
Most of the liver glycogen is depleted after ------------- hours of fasting,
After about 18 hours fasting, most of the liver glycogen is depleted, when depot fats are hydrolyzed and energy requirement is met by fatty acid oxidation
Which is FALSE -
Muscle will not release glucose to the bloodstream, because muscle tissue does not contain the glucose-6-phosphatase.
Energy yield from one glucose residue derived from glycogen is -
Energy yield from one glucose residue derived from glycogen is 3 ATP molecules, because no ATP is required for initial phosphorylation of glucose (step 1 of glycolysis).
If glycolysis starts from free glucose only 2 ATPs are produced.
Which is FALSE about Glycogenin?
Glycogenin -primer is essential to accept the glycosyl unit.
Which of the following is FALSE?
Glycogen synthase -
becomes inactive on phosphorylation
Which of the following is correct?
The regulation of glycogenolysis in skeletal muscle is by epinephrine.
Glucagon has no effect on muscle glycogenolysis.
All of the following are correct about Von Gierke’s Disease EXCEPT?
Von Gierke’s Disease -Glucose-6-phosphate is accumulated
When 6 molecules of glucose are entering in this pathway. The ------------ carbon atoms of all 6 glucose molecules are removed as 6 molecules of CO2
HMP Shunt - When 6 molecules of glucose (6 × 6 = 36 carbons) are entering in this pathway. The first carbon atoms of all 6 glucose molecules are removed as 6 molecules of CO2
Which is the rate limiting step of HMP Shunt?
First Step of HMP Shunt is the rate-limiting step
