Helper T cells are very important cells in the adaptive immunity. They are required for almost all adaptive immune responses and They also help activate cytotoxic T cells and macrophages to attack infected cells.
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Answer: Strong claws for climbing
Explanation:
If adenine and thymine are complimentary pairs, and we're finding how many thymine there should be in the case that there are 36 adenine bases, there would be 36 thymine bases.
Answer:
B--Organism
Explanation:
Different levels of biological organization start from the least complex object and end at the most complex. Every object has objects preceding it that it is made up of.
In this question, the organ system is made up of several organs. A community is made up of several populations of different people. Think about this now: what makes up a population and is made up of organ systems? The most logical answer here according to the flow is B--an organism. An organism is made up of organ systems and makes up a population, which in turn allows several populations to make up a community.
