Question

Dietary lipids absorbed from the intestinal brush border are transported as chylomicrons in blood. T/F?

Glycosaminoglycans commonly contain repeating disaccharides. T/F?

Which of the following statements about glycolysis is TRUE?

A.	Glucokinase catalyzes the conversion of glucose to glucose 6-Phosphate in the liver
	B.	When one molecule of glucose is converted to pyruvate via glycolysis, one molecule of NAD+ is reduced
	C.	When one molecule of glucose is converted to pyruvate via glycolysis, one carbon is lost as carbon dioxide
	D.	Hexokinase catalyzes the conversion of fructose 6-phosphate to fructose 1,6-Bisphosphate

Answer 1

1,true

Chylomicrons are large lipoproteins which transports the lipids and fatty acids metabolised in the intestine to the blood stream. They are long chained fatty acid. When the chylomicrons increase in the blood, they make it look milky.

2, true

Glycosaminoglycans are polysaccharides which has repeating disaccharides subunits. They can be found in the extracellular matrix. Ex- Heparin, hyaluronate,etc

3, opt-a- Glucokinase catalyses the conversion of glucose into glucose-6 phosphate in the liver is true and this is a rate limiting step.

other options are incorrect because.,

For one molecule of glucose, 2 NAD+ is reduced

There is no loss of CO2 in glycolysis

Hexokinase catalyses the first step of glycolysis- conversion of glucose to glucose-6- phosphate.

The difference betweeb hexokinase and glucokinase is that the former is present in all tissues whereas the latter is present only in liver and beta cells of pancreas.