NEETZoologyChemical Coordination and Integration
Which of the following is an incorrect statement regarding the physiological and metabolic effects of catecholamines secreted by the adrenal medulla?
Options
- AThey stimulate the breakdown of lipids.
- BThey increase the rate of respiration and heartbeat.
- CThey promote the synthesis of proteins from amino acids.
- DThey stimulate the breakdown of glycogen resulting in hyperglycemia.
Correct answer
C. They promote the synthesis of proteins from amino acids.
Step-by-step solution
Adrenal medullary hormones (adrenaline and noradrenaline) are emergency hormones that prepare the body for fight or flight. Metabolically, they stimulate the breakdown of glycogen (glycogenolysis) resulting in an increased concentration of glucose in the blood (hyperglycemia). In addition, they also stimulate the breakdown of lipids (lipolysis) and proteins (proteolysis) to provide immediate energy. They do not promote the synthesis of proteins. Therefore, the statement claiming they promote protein synthesis is in