Given the following DNA template, what is the appropriate mRNA strand
3' TACTTCAAACCGATT 5'

5' AUGAAGUUUGGCUAA 3'

Explanation:

The process by which the information encoded in a DNA is used as a template to synthesize a mRNA is called TRANSCRIPTION. It is the first stage of gene expression carried out in the nucleus of eukaryotic cells and cytoplasm of prokaryotic cells by RNA polymerase enzyme.

The process of transcription follows the complementary base pairing rule, which says that Adenine base always hydrogen pairs with Thymine while Guanine pairs with Cytosine. During transcription, the Thymine base (T) is replaced by Uracil base (U). Hence, whenever RNA polymerase reads an A in the DNA, it synthesizes U in the mRNA and vice versa for T and A. The same applies for G and C.

For the DNA sequence;

3' TACTTCAAACCGATT 5'

The mRNA sequence will be synthesized;

5' AUGAAGUUUGGCUAA 3'

"d.) carbon dioxide and hydrogen sulfide"