The Catholic church is unbiblical...
1Co 11:24 And when he had given thanks, he broke it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me.
Luk 24:30 And it came to pass, as he sat at meat with them, he took bread, and blessed it, and broke, and gave to them.
Luk 24:31 And their eyes were opened, and they knew him; and he vanished out of their sight.
Luk 24:35 And they told what things were done in the way, and how he was known of them in breaking of bread.
Know to them by eating bread??? Nope...Known to them by eating broken bread??? Nope...Known to them by breaking bread??? You got it...
Transubstantiation is a false doctrine because Jesus instituted Lords Supper before his blood was shed and body broken! He spoke of His blood being shed, which was still yet future. This proves it was a symbol.
The very record of historically, (Justin Martyr, Irenaeus, Tertullian, Cyprian and Hippolytus) which the Roman Catholic and Orthodox churches love to quote as authority, proves that before 200 AD, the church viewed the bread and juice as symbols. Conversely, the earliest historical hint of transubstantiation was in the 4th century.