DNA+Review

Define complementary paired bases- a pair of hydrogen bases in a cell

template-the double helix of dna

mutation- an error in replication

messenger RNA- produced in the nucleus, it serves as a template from replication

DNA replication-copying of dna

transcription-second step of dna replication

translation- changing the info on the dna strand

codon-a base in mrna is a codon

Questions 1. How does the structure of DNA allow it to be replicated? Dna strands unzip

2. How is the structure of RNA similar to, but also different from DNA? (THIS IS A LONG ANSWER SEE TABLE 21.1) Its similar because of its double helix but its base pairs are different

3. If a strand of DNA was GCCATGACC what would the complementary DNA strand be? cggtactgg 4. If a strand of DNA was GCCATGACC what would the complementary mRNA strand be? cgguacugg 5. What is the structure of a protein? sequence of amino acids

6. What functions do proteins perform? determine structure to different funtions in the body

7. If a mRNA had the codon sequence AUU GCG UGG, name the three amino acids that would be linked. Lysine, caline, theronine

8. What evidence with respect to DNA suggests that all living things are related and share a common ancestor? smilar genes and dna sequence

9. Where does transcription occur and what is the product? occurs in nucleus codons are passed

10. Where does translation occur and what is the product? it occurs in the ribsomes