Allosteric protein
Allosteric protein can be defined as a protein with a
multiple ligand- binding site that changes from one folding conformation to a
different shape when another molecules binds to it. However, the conformational
changes alter the properties or activities of the protein.
C) Tectonic is not a type of plate boundary
If you didn't know already, trisomy 21 is also known as Down Syndrome. It is caused by error in the cell division which is called nondisjunction. It leaves a sperm or egg cell with an extra copy of chromosome 21 before or after conception.
No I have not completed it but, I'd be happy to help you with any other questions you might have.