1.What is the base sequence of the complementary strand of DNA for TACATGCGA?

For your first question, the DNA strand complementary to the sequence given is ATGTACGCT

Since you have provided the DNA strand, the complementary mRNA strand is as follows:

AUGUACGCU

This sequence is based on the following base-pairing rules:

Adenine---Uracil (in RNA)

Guanine---Cytosine

Each codon (sequence of three bases) specifies a particular amino acid. This mRNA sequence codes for the following amino acids:

Met (start codon)---Tyr---Ala

SURE. I have provided a link. To find out which particular amino acid each codon specifies, you simply refer to the following chart:

http://content.answcdn.com/main/content/img/McGraw...

-the tRNA molecule carries an anticodon and the specified amino acid. This anticodon recognizes the complementary codon on the mRNA molecule. For example, the codon AUG would be recognized by the anticodon UAC. The codon GCU would be recognized by the anticodon CGA. Hence, tRNA functions in recognizing the complementary mRNA codon and adding the specified amino acid to the growing polypeptide chain. I hope this helps!

mRNA --> AUGUACGCU

Codons --> AUG UAC GCU

Amino Acid Sequence --> Methonine ( start ), Tyrosine, Alanine.