Nuremberg Race Laws in Germany.

Who could now be defined as a "Jew"?.

People that could be defined as a jew were people with maybe, four or three Grandparents that are Jewish, even the people who have changed their religion to christianity. Even if a certain person (Jewish person) identified themselves as a jew or not, they were identified as a Jew.

What was meant by "Aryanizing" Jewish Businesses?

This means dismissing Jewish businesses, and letting non-Jewish Germans take over (the businesses).

How were Jews who were professionals (lawyers, doctors etc.) restricted?

They were were not allowed to attend to non-Jewish Germans, only being able to attend to their "own kind", this would most likely decrease the amount of money made by businesses.

What did Jewish identity cards need to include now?

The Jewish identity cards needed to include a red J stamped on the identity card, not only this but all Jews were required a new middle name: "Israel" for males, "Sara" for females. These cards allowed the Police to identify the Jews and the Germans

What was the "Law for the Protection of the Hereditary Health of the German People" (sum up in your own words)?

The "Law for the Protection of the Hereditary Health of the German People" is where German citizens had to get a clarification that that they were healthy enough or did not have diseases the can spread not only to their partners but their offspring (possibly). And also this allows a Jewish and non-Jewish Germans to marry (which obligates against the Nuremberg Race Laws.