Answer:
The blood brain barrier blocks chemicals from entering brain tissue.
Explanation:
Answer:
the answer is c.
oceanic acidification is occurring, which results in shelled creatures, clams, lobster, to have weaker shells as a defense. the shells break easily and are too weak to protect the organisms inside, unable to properly calcify their shells leaves them vulnerable to preditors...
Answer:
I think the answer is (A) Allele.
Explanation:
I just guessed.
Archaebacteria<span> are the oldest organism living on Earth. They are unicellular prokaryotes - microbes without cell nucleus and any other membrane-bound organelles in their cells - and belong to the </span>kingdom, Archaea. Examples of which are p<span>sychrophiles, halophiles, methanogens and thermophiles.</span>
- T and B cells express clonally distributed antigen receptors in the adaptive immune system.
- Antigen-specific T cell populations are stimulated by professional antigen-presenting cells such as dendritic cells (DCs) to achieve functional adaptive immune responses, which provide critical stimulatory signals for efficient expansion and development of effector functions.
- Helper T cells send costimulatory signals to antigen-specific B cells, promoting affinity maturation and isotype switching. In this section, we discuss the interactions between DCs, T cells, and B cells, as well as the critical signals for the efficient induction of adaptive immune responses.
To learn more about T and B cells from the given link
brainly.com/question/13588544
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