निम्नलिखित में से किस रक्त समूह को सार्वभौमिक प्राप्तकर्ता (यूनिवर्सल एक्सेप्टर) कहा जाता है?

Which digestive hormone inhibits both gastric secretion and motility, stimulates insulin release, and is secreted mainly when fat is present in the duodenum?

The repeated sequence of gradual onset of apnoea followed by gradual restoration of respiration is called ________.