Restrictive Laws in Nazi Germany

1.  Who could now be defined as a "Jew"?
Anyone who had three or four Jewish grandparents was defined as a Jew
2.  What was meant by "Aryanizing" Jewish Businesses?
Aryanizing Jewish businesses was when The Nazis dismissed all Jewish worker or managers and replaced with with non-Jews.
3.  How were Jews who were professionals (lawyers, doctors etc.) restricted?
Jewish Doctors were restricted from attending to non-jews and Jewish lawyers could not practice the law.
4.  What did Jewish identity cards need to include now?
If the persons first name was not Jewish sounding the identity cards of Jews had to include the middle name Israel if the person was a male and Sara if the person was a female.
5.  What was the "Law for the Protection of the Hereditary Health of the German People" 
The Law for the Protection of the Hereditary Health of the German People was a law stating all German citizens must obtain a certificate of fitness if wanting to marry.