Question

1. the process of dna being copied into mrna is called
2. the enzyme used to build the mrna using base pairing is called
3. the process in which mrna is decoded to make proteins is called

Explanation:

1. Transcription is the process where DNA is copied into mRNA. It occurs in the nucleus and uses DNA as a template.
2. RNA polymerase is the enzyme that builds mRNA by following base - pairing rules (A - U, T - A, C - G, G - C).
3. Translation is when the mRNA is decoded (by ribosomes) to make proteins. It occurs in the cytoplasm.

Answer:

1. Transcription
2. RNA polymerase
3. Translation