Question

78.Deoxyribonucleotides are formed by reduction of ribonucleoside diphosphates.True/False?

77.Acetyl CoA does not provide the carbon skeletons for the biosynthesis of glucose.True/False?

76.Ketone bodies are synthesized in mitochondria.True/False?

75.Agonists differ from antagonists in that only agonists can trigger intracellular metabolic changes.True/False?

74.The products of an aminotransferase-catalyzed reaction between pyruvate and glutamate would be alanine and a-ketoglutarate.True/False?

73.A drastic increase in plasma triacylglycerols occurs during the early few days of starvation in humans. True/False?

Answer 1

76) True .

Ketone bodies are synthesized in mitochondria and synthesis occur due to an unavailability of blood glucose, such as during fasting. The production of ketone bodies is then initiated to make available energy that is stored as fatty acids.

77) False .

Acetyl CoA provides the carbon skeleton for the biosynthesis of glucose. The carbon of acetyl CoA goes into citric acid cycle and form oxaloacetate which then help in formation of phosphophenolpyruvate ,and it then help in biosynthesis of glucose.

75) True .

Agonist bind to receptor and thus trigger intracellular metabolic changes , but antagonist cannot because antagonist only bind to receptor just to mask the site from binding of agonist and inhibiting agonist activity. It cannot generate intracelluar changes.