Answer:
i think its ans is D ...
Explanation:
The primary protein structure refers to the sequence of amino acids and the location of disulfide bonds
B is the answer.
As sexual reproduction results in genetic variation. So the traits are not passed.
I think the correct answer from the choices listed above is the first option. T<span>he scientists were concerned about the glue used to reattach the birds’ tails because they </span><span>did not know if it would hold the tails in place very long. Hope this answers the question.</span>
Answer:
Antigen-presenting cells
Explanation:
Class II MHC molecules are present on the surface of all the antigen-presenting cells. Some of the examples of antigen-presenting cells (APCs) are dendritic cells, macrophages and B cells.
The Class -II MHC molecules are formed in the endoplasmic reticulum of these cells followed by binding of antigen peptide fragments to these class II MHC molecules. The antigen-MHC II complexes are then inserted into the plasma membrane of these antigen-presenting cells.
Answer:
A. All matter in the universe has expanded outward from a single point.