A T cell, or T lymphocyte, is a type of lymphocyte a type of white blood cell that plays a central role in cell-mediated immunity.
I say D, because there are certain states that have national parks and a large tree area.
Answer:
pluto
Explanation:
the others are formed from other things
They help convert nitrogen to nitrate which is usable by living beings. (Living beings can't use regular nitrogen)
C. tRNA
The ribosome binds to mRNA at a specific area. The ribosome starts matching tRNA anticondon sequences to the mRNA condom sequence. Each time a new tRNA comes into the ribsome, the amino acid that it was carrying gets added to the elongating polypeptide chain.
