Natural selection it has to be 20 characters so disreguard the rest
“I don't feed the birds because they need me; I feed the birds because I need them.” “Feeding birds means feeding yourself! Birds are part of nature and feeding nature is nothing but feeding yourself!”
There would be more Carbon Dioxide because plants use CO2 when they go through photosynthesis.
Answer and explanation:
Antibodies are structures made of four polypeptides, <em><u>two light (L) chains and two heavy (H) chains that join together and form a molecule shaped like a "Y"</u></em>. This structure is possible thanks to the <u>disulfide bonds</u> that bind light chains and heavy chains together. While the stem of the Y is constant and doesn't change ("<em>constant region</em>"), the tips of the Y, composed of 110-130 amino acids and called "<em>the variable region</em>", vary greatly among the different antibodies and are responsible for the high specificity of these molecules.
<u>This is why we could say that the primary structure of this protein is given by disulfide bridges that twist the antibody and allow it to bind to a protein from the flu virus.</u>
Answer:
D. friction between two rock surfaces grinding away minerals. :)
Explanation:
