Answer:
TCR
Explanation:
Helper T cells are the CD4T cells that are present in the inactive form. These cells have receptors for antigens on their surface. These antigen receptors are called T-cell receptors (TCRs). The function of TCR is to recognize and bind to specific foreign antigen fragments that are presented in antigen–MHC complexes. Different helper T cells have their unique TCRs to recognize a specific antigen–MHC complex. The CD4 proteins of helper T cells also interact with the MHC antigens and help maintain the TCR–MHC coupling.
There are more but birds would be a bad index fossils
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The answer has to be option B "testable." A hypothesis is a educated guess on what you think is going to happen during a experiment. Also its not going to be option A because a hypothesis doesn't exactly have to be written homeschool students have there instructions on a computer in order to be completed. Its not option C because a hypothesis has the have its test variables. (independent & dependent variables) Its also not option D because some scientists conduct their experiments by themselves.
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Answer:the elongated cylindrical shaft of a long bone is called its. diaphysis. the expanded end of a long bone is called the. epiphysis.
Explanation:
The answer to the blank provided in the question are filled up below.
<span>The force driving simple diffusion is the concentration gradient while the energy source for active transport is adenosine triphosphate or also known as ATP. This are use during the conversion of food to energy.
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