Tagged: Pyruvate

trial 4 2

Lactate to glucose conversion

Lactate is oxidized to pyruvate in a reaction catalyzed by Lactate dehydrogenase. The patients with genetic deficiency of lactate dehydrogenase present with muscle cramping and myoglobinuria after intense exercise. The sources of lactate include muscle and red blood cells. Lactate is a waste product in such cells; it is transported to liver and can be converted to glucose through pathway of gluconeogenesis. The energy requirements for conversion of lactate to glucose are: A. 2 ATP B. 4 ATP C. 6 ATP D. 8 ATP E. 38 ATP. The correct answer is C- 6 ATP. Lactate produced by active skeletal muscle...

trial 4 0

Prolonged fasting and gluconeogenesis…

A 14-year-old high school girl who is extremely conscious about her appearance has gone a full day fasting to fit in to a dress she intentionally brought a size smaller than her actual size for a dance party. Which of the following organs/tissues contribute to the glucose that is being synthesized through gluconeogenesis during periods of prolonged fasting? A. Spleen B. Red blood cells C. Skeletal muscle D. Liver E. Brain D-Liver is the correct answer. Gluconeogenesis is the process of converting noncarbohydrate precursors to glucose or glycogen. The major substrates are the glucogenic amino acids, lactate, glycerol, and propionate....

Copy Protected by Chetan's WP-Copyprotect.