Memory Tc cells:.
a) are produced by the thousands, but they do not differentiate further the first time the antigen triggers an immune response.
b) immediately differentiate into helper T cells, producing a prompt, effective cellular response that can overwhelm an invading organism.
c) are highly mobile cells that roam throughout injured tissues.
d0 suppress the responses of other T cells and of B cells, and they limit the degree of immune system activation.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

japan is the correct anwser because i already took the test and i passed it