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DNA dibedakan menjadi DNA sense dan DNA antisense. RNA dibedakan menjadi mRNA, tRNA dan rRNA. DNA dan RNA terlibat dalam sintesis protein. Sintesis protein berlangsung melalui dua tahap, yaitu transkripsi dan translasi. Kesalahan dalam penerjemahan kode oleh tRNA dapat menyebabkan mutasi. RNA berupa rantai tunggal yang pendek. Pada RNA, basa nitrogen timin diganti urasil. Dimanakah Kita Temukan Enzim? Di dalam tubuh makhluk hidup, beberapa enzim dibentu.
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