Final answer:
To transcribe the DNA sequence ATATCGGCA into mRNA, each adenine (A) is replaced with uracil (U) and thymine (T) with adenine (A), leading to the sequence UAUAGCCGU, which is option 5.
Step-by-step explanation:
The student's question asks for the sequence of bases that would be transcribed from the DNA molecule with the sequence ATATCGGCA. During transcription in Biology, DNA is used as a template to make an mRNA molecule. To transcribe DNA to mRNA, adenine (A) pairs with uracil (U) and cytosine (C) pairs with guanine (G), resulting in the DNA sequence changing to an RNA sequence by replacing thymine (T) with uracil (U). Therefore, the correct transcription would be UAUAGCCGU, which is option 5).