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Kate asked in Science & MathematicsBiology · 1 decade ago

Help with biology, please!?

1. Name at least two organelles that are involved in bio-synthesis?

2. Part of a mRNA strand has the following nucleotide sequence:

uracil, guanine, cytosine, cytosine, guanine, adenine, uracil, adenine, adenine

How many amino acids does this code have?

3. What DNA sequence produced the mRNA sequence given in problem #2?

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    1) chloroplasts are involved in the synthesis of glucose

    the nucleus, does that count? in the synth. of DNA

    2) amino acids are always encoded by triplets of nucleotides, hence, 3 amino acids (9 nucleotides)

    3) ugccgauaa

    is encoded by ttatcggca (note that the sequence always reads 5' to 3' and I turned the complementary strand (DNA) around. if your teacher does not want this, invert it to acggctatt

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