Final answer:
The mRNA sequence complementary to the DNA sequence 5' ATGCCC 3' is 5' AUGCCC 3'. Amino acids are determined by translating each codon in the mRNA according to a genetic code chart.
Step-by-step explanation:
The sequence of the mRNA will be complementary to the sequence of the DNA strand given, meaning each DNA nucleotide (adenine (A), cytosine (C), guanine (G), and thymine (T)) has a corresponding mRNA nucleotide (uracil (U) replaces thymine in RNA). Therefore, from the DNA sequence 5' ATGCCC 3', the complementary mRNA sequence would be 5' AUGCCC 3'.
To determine the amino acids encoded by this mRNA sequence, we would use the genetic code chart to translate each set of three nucleotides, known as a codon, into an amino acid. Since the exercise does not provide the entire genetic code chart, we can't specify the amino acid sequence here; however, the student could do this by matching each codon in the mRNA to its corresponding amino acid according to the chart provided in their textbook or class materials.