| 343. What is the Holy Eucharist? | The body, blood, soul and divinity of Christ really present under the appearance of bread and wine. |
| 344/345. When did Christ institute the Holy Eucharist? | At the Last Supper on Holy (Maundy) Thursday in the presence of the apostles. |
| 347. What happened when Our Lord said: "This is My body . . . this is My blood"? | The entire substance of the bread changed into His body and the wine changed into His blood. |
| 348/349. Did anything of the bread and wine remain after this? | Only the appearance (what our senses tell us such as sight, taste, etc.). |
| 350. What is this change called? | Transubstantiation. |
| 351. Is Jesus Christ whole and entire both under the appearances of bread and wine? | Yes, Jesus is entire in the bread and Jesus is entire in the wine. |
| 356. Why does Christ give us His own body and blood in the Holy Eucharist? | (RRR) Real presence among us as He promised, Renew and commemorate His sacrifice on the cross for all time, and Receive Him in Holy Communion to obtain grace. |
| 357. What is the Mass? | The unbloody sacrifice of the body and blood of Christ under the appearance of bread and wine. |
| 358. What is a sacrifice? | The offering and destruction of a victim by a priest acknowledging that God is the Creator. |
| 359. Who is the principal priest in every Mass? | Jesus Christ acting through the ministry of His ordained priest. |
| 360. Why is the Mass the same sacrifice as the sacrifice of the cross? | Because the victim and priest are the same: Jesus Christ. |
| 361. What are the purposes for which the Mass is offered? | (PAST) Petition, Adoration, Satisfaction, Thanksgiving. |
| 363. How should we assist at Mass? | Reverence, attention, and devotion. |