<span>It
is important that antibodies have a symmetrical quaternary structure to create
two identical binding sites for antigens. An antibody is a relatively large
protein having a Y-shape. Plasma cells produce antibodies which are then used
by the immune system to fight off pathogens (e.g. bacteria and virus). The antibody
is able to recognize the antigen of the pathogen. It binds with it either to
neutralize it directly or “tag” the microbe for future attack by other parts of
the immune system. </span>
Probably the Biosphere: where things live and grow
the answer is the second one how appearance of an organism and its structure
The correct answer is 5′ to 5′ triphosphate linkage.
<span>mRNA capping is the posttrancriptional modification of messenger RNA when the nucleotide on the 5′ end is specially altered. The process is highly regulated and it creates stable and mature messenger RNA able to undergo translation. The cap on the <span>5’ end of mRNA consists of a guanine nucleotide connected to mRNA via an unusual 5′ to 5′ triphosphate linkage. Guanosine is methylated on the position 7 after capping.</span></span>
Answer:
A. An orbital
Explanation:
Electrons are found on orbitals surrounding the atom.
