Final answer:
The hormone that lets cells take in fatty acids and amino acids for lipid/protein synthesis is insulin-like growth factor (IGF). IGFs are involved in energy and amino acid metabolism, fat synthesis, and fat breakdown. They stimulate amino acid uptake by target cells, promoting protein synthesis.
Step-by-step explanation:
The hormone that lets cells take in fatty acids and amino acids for lipid/protein synthesis is insulin-like growth factor (IGF). IGFs are a type of non-steroid hormone that is made of amino acids and bind with receptors on the plasma membrane of target cells. They are involved in energy and amino acid metabolism, fat synthesis, and fat breakdown. IGFs stimulate amino acid uptake by target cells, promoting protein synthesis.
Examples of stimuli that can trigger the release of IGFs include sleep, stress, exercise, low blood glucose, high amino acid content in the blood, and starvation. When released, IGFs have several actions, such as enhancing amino acid uptake by cells, aiding in the retention of phosphorous, potassium, sodium, and calcium, and accelerating the mobilization of fat from adipose tissue.