Sometimes, however, the aliens penetrate the protective shield. There are soldie

Question

Sometimes, however, the aliens penetrate the protective shield. There are soldiers living in the space station that can protect it from the aliens that get past the protective shield.

These soldiers “lock on to” an alien before it reaches the space station and neutralize it. Only certain soldiers can lock on to and neutralize a particular type of alien. For example, only soldiers with fire extinguishers can neutralize aliens that shoot fire and only soldiers with shields can neutralize aliens with swords. This is called the _______1_________, because only a certain type of soldier can neutralize each type of alien. Soldiers recognize each other because they all wear the same uniform, the _______2_______.

These are the options:

adaptive immune response • antibodies • IgG (antiserum or antitoxin) • inactivated • antigens • innate immune response • attenuated • autoimmunity • B cells • cytotoxic (CD8) T cells • helper (CD4) T cells • macrophages • memory B and T cells • MHC • sub-unit • vaccinate

Explanation / Answer

1 antibodies as it has crossed innate barriers and only certain type can fight to a specific invader i.e. antibodies are specific. It is adaptive immune response and antibodies are immunoglobins

2. CD8 cell recognise MHC1 and CD4 will recognise MHC2 i.e. MHC express for self and non self

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