Theoretically, could a lay person, by virtue of their baptism, validly consecrate Holy Eucharist?

Does the ability to validly consecrate Eucharist come from our baptism? Does ordination add an extra power not given in baptism? Or is ordination simply the act of setting aside a baptized person for special training so that the Eucharist is done reverently and in order? In an emergency, could any baptized Christian, male or female, stand at the altar, recite the words of institution over bread and wine, and the Eucharist would be valid. Correct? Also, could any baptized Christian pronounce absolution for any other baptized Christian in confession?