Answer:
The answer is actually B) Memory T. Memory T cells rapidly produce large numbers of effector T-cells when re-exposed to their antigens, which provides the immune system memory against past infections.
Answer:
b
Explanation:
they chose the best tomatoes to make even better ones
Answer:
The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Explanation:
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<span>It has the advantage that only when the substrate is presence the genes responsible for its metabolism are turned on.</span>
