Practice question

α₂β₂ (A) is the right choice. This sits at the heart of Blood and their Component: the wording points straight to what is happening in the tissue or organ system. A useful study habit is to ask what the structure or process is for: α₂β₂ is the option that correctly names the structure, process, or principle asked for in Blood and their Component. That reasoning supports α₂β₂. One solid sentence about why this works is enough for recall — you do not need a long essay for every MCQ. When you practise, cover the choices first, write α₂β₂ from memory, then reveal the letter — that habit builds real recall for Blood and their Component.