Three adjacent nucleotides constitute a unit known as the codon, which codes for an amino acid. For example, the sequence AUG is a codon that specifies the amino acid methionine. There are 64 possible codons.
<span>In cells, enzymes are proteins that are needed to lower the amount of energy required to start chemical.</span>
Enzymes are biological catalysts which accelerate chemical reactions (reactions are millions of times faster than without them). Every enzyme has an active site which binds substrates and converts them into products.
The
Thymocyte progenitors enter the subcapsular region of the thymus as
double-negative cd3- t cells where the double negative refers to lack of
cluster determinants CD4 and CD8. Double-negative cd3- t cells exist as small population
that is 1%-5% of lymphocytes in the lymphoid organs and peripheral blood of
humans and normal rodents.
1) The first part is the genus name, and the second part is the specific epithet, or name that identifies the specie. The first letter of the genus name is capitalized and all the letters for the specific name are lowercase.
