The sequence of an mRNA molecule produced from a DNA template strand with the composition 5′-AGCTACACT-3′ is A. 5′-AGUGUAGCU-3′ B. 5′-UCGAUGUGA-3′ C. 5′-AGTGTAGCT-3′ D. 5′-TCGATGTGA-3′

The correct answer is A. 5′-AGUGUAGCU-3′.

The process of transcription is the first step in gene expression. It is the process by which DNA is converted into RNA. The sequence of bases in DNA is complementary to the sequence of bases in RNA. This means that the adenine (A) base in DNA pairs with the thymine (T) base in RNA, and the guanine (G) base in DNA pairs with the cytosine (C) base in RNA.

The DNA template strand is the strand of DNA that is used as a template for the synthesis of RNA. The RNA transcript is the RNA molecule that is synthesized from the DNA template strand.

In the question, the DNA template strand has the composition 5′-AGCTACACT-3′. The complementary RNA transcript will have the composition 5′-AGUGUAGCU-3′.

Option B is incorrect because it is not complementary to the DNA template strand. Option C is incorrect because it does not contain the correct sequence of bases. Option D is incorrect because it is not the complementary RNA transcript of the DNA template strand.