I think it's fight or flight
Answer: The enzyme 's active site binds to the substrate. ... When an enzyme binds its substrate it forms an enzyme-substrate complex. Enzymes promote chemical reactions by bringing substrates together in an optimal orientation, thus creating an ideal chemical environment for the reaction to occur.
Answer:
is this it?
Explanation:
Cytotoxic CD8 T cells carry out their killing function by releasing two types of preformed cytotoxic protein: the granzymes, which seem able to induce apoptosis in any type of target cell, and the pore-forming protein perforin, which punches holes in the target-cell membrane through which the granzymes can enter.
The way HIV spreads quickly though the gay male population is through unprotected intercourse. A common misconception is that since men can't get pregnant, condoms do not need to be used. This is false, because without condoms, STD's are easily transmitted.
