Can someone pls explain to me multiple choice questions 17 and 40 on the vcaa 2014 exam?
For 17 why can't it be d?
For 40 why can't it be a?
17) Invading host cell or host cell
DNA? It seems that b would be the more accurate answer here
40) the other great apes (hominids) have opposable thumbs as well. (C would be the answer)
Also how do you know when to talk about clonal selection being activated by a B cell detecting a specific raw antigen or when clonal expansion is initiated by a specific T helper cell stimulating an activated B cell?
I tend to mix both together (not sure if it's right? but I've been getting full marks for immunity questions that describe the action of a vaccine)
- T helper cells release cytokines to stimulate the clonal expansion of clonal selected naive B cells which detect specific antigens as non-self, which divides and differentiates to form antibody-producing B plasma cells, and B memory cells......(continue)