This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'On giving a patient insulin, which of the following is expected to occur first? \nSelect and explain. \nA. Increased transpo of K+ into adipocytes, B. Stimulation of protein synthesis, C. Activation of glycolysis, D. Increase in mRNA for lipolysis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Increased transpo of K+ into adipocytes will occur first onn giving an injection of insulin. Based onn time on onset, actions of insulin are classified as: Rapid(seconds): Increased permeability, leading to : Increased transpo of glucose, aminoacids, and K+ into insulin sensitive cells. Intermediate(minutes): Changes in activity levels of intracellular enzymes, leading to: Stimulation of protein synthesis Inhibition of proteinn degradation Activation of glycolytic enzymes and glycogen synthase Innhibition of phophorylase and glucogenic enzymes. Delayed (Hours to days): Changed rates of transcription for DNA, leading to: Increased in mRNAs for lipogenic and other enzymes. Ref: Guyton and Hall 13th edition Pgno: 985', 'role': 'assistant'}]