How many different proteins does the ribosome consist of?

Which of the following is not correct about translation

Synthesis of enzymes take place by

In biological systems, the $RNA$ molecules direct the synthesis of specific proteins which are characteristics of each kinds of organism. This process is known as

Assertion : Replication and transcription occur in the nucleus but translation takes place in the cytoplasm.

Reason : $mRNA$ is transferred from the nucleus into cytoplasm where ribosomes and amino acids are available for protein synthesis.