What happens in cells (and what do cells need)?

Easy

During protein synthesis, the DNA sequence coding for a protein is transcribed to form mRNA.

A section of a DNA template strand has the following base sequence:

\text{A\quad T\quad G\quad C\quad C\quad G\quad T\quad T\quad A\quad G}

What would be the complementary sequence of mRNA transcribed from this section of DNA?

$TACGGCAATC\text{T\quad A\quad C\quad G\quad G\quad C\quad A\quad A\quad T\quad C}$

$UACGGCAAUC\text{U\quad A\quad C\quad G\quad G\quad C\quad A\quad A\quad U\quad C}$

$ATGCCGTTAG\text{A\quad T\quad G\quad C\quad C\quad G\quad T\quad T\quad A\quad G}$

$AUGCCGUUAG\text{A\quad U\quad G\quad C\quad C\quad G\quad U\quad U\quad A\quad G}$

What happens in cells (and what do cells need)? Questions