How do hydrophobic and hydrophilic regions govern the arrangement of membrane lipids in a bilayer?

Lipids have a hydrophilic head and hydrophobic tail, that is, it is an amphipathic molecule. These characteristics allow lipids to be the appropriate molecules to make up cell membrane structures, as the hydrophilic head of the lipid faces the outside of the cell allowing the cell to come in contact with external substances, however, the hydrophobic lipid tail. faces the interior of the cell, preventing material from inside the cell from spilling out.

The right answer is C.

Gene therapy involves introducing the therapeutic gene that will replace the role of the defective gene and, thus, restores the functional capacity of the diseased organ.

The vector production method for gene therapy is a preliminary stage of synthetic biology. As the production of the first vectors has relied mainly on the use of viral sequences existing in nature, this approach is closer to conventional genetic engineering (biotechnology) than to synthetic biology. So gene therapy involves biotechnology.

The term "clone" refers to an object or organization considered to be identical to another.  In biotechnology, cloning refers to the reproduction in the laboratory of genes, cells or organisms from the same original entity.