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Nataly [62]
3 years ago
10

The unit used to measure period is the ____

Biology
1 answer:
erica [24]3 years ago
3 0

Answer:

Answer is B.

Explanation:

<u>Period is duration of time</u>.

Period can be of a second,minute,hour or of Some years.We will give unit according to the duration of time.In the given options second is most obvious because it is used to measure time.

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Positive selection tests to see if the ______ of a T-lymphocyte can recognize and bind to an MHC molecule.
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Positive selection tests to see if the TCR of a T-lymphocyte can recognize and bind to an MHC molecule.

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A T-lymphocyte is a special type of immune cell that is generated inside the bone marrow.

The T-cell receptor (abbreviated as TCR) is a protein located on these immune T lymphocytes.

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