Which process inhibits skeletal muscle atrophy during prolonged hibernation in arctic ground squirrels?

💡 Explanation

When squirrels hibernate, they minimize energy expenditure via metabolic suppression; branched-chain ketoacid dehydrogenase activity decreases because it regulates branched-chain amino acid catabolism used for energy, limiting muscle protein breakdown. Therefore reduced BCKDH activity results, rather than enhanced mitochondrial fusion, increased synthesis, or elevated degradation which are inhibited by lower energy demands.

• Which consequence results when prolonged anoxia constrains the rhizosphere of legume plants?
• Which risk increases when a prolonged drought causes stomatal closure in plants?
• Which risk increases for birds relying on soaring flight when asymmetrical feather wear develops?
• Which outcome occurs when a songbird's syrinx bifurcations are unequal?
• Which outcome reduces nutrient absorption in herbivores with limited gut flora diversity?
• Which outcome occurs when humidity in bee colonies decreases, impacting dance communication?