Q&A's: "Why do Catholics...?" And other quick questions about the faith

What is a Bishop?  And what role does he play in the Church?

Why do Catholics practice fasting and abstinence during Lent?

If Jesus was a Jew, why are we Catholic?

Who are the saints?

How can the saints in heaven hear us?

Jesus gave the Eucharist after everybody had eaten, so why do Catholics have to fast before Mass?

Why do Catholics kneel?

Why do we genuflect and what does it mean?