Questions pertaining to Lab Questions 11"DNA"

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Questions:

 

 Questions pertaining to Lab Exercise 11, “DNA”

 

 

 

1. What is indicated by 1 through 3 in the illustration of the DNA molecule?

 

 

 

2. If a molecule of DNA were found to contain 33% adenine, could you calculate the expected amounts of the other bases? What would they be?

 

  • Adenine pairs with thymine in a 1:1 basis. Therefore, there would be 33% thymine.

 

 

 

3. Which would be harder to break, the adenine-thymine base pair or the guanine-cytosine base pair. Explain your answer.

 

  • The guanine-cytosine base pair would be hardest to break, as these two bases have three hydrogen bonds holding them together. Adenine-thymine base pairs are only joined by two hydrogen bonds.

 

4. List the parent strand of DNA you used in activity 11.2 and then list its complimentary DNA strand.

 

 

 

Questions pertaining to Lab Exercise 12, “Protein Synthesis”

 

 

 

 

 

5. List the parent strand of DNA you used in activity 12.2 and then list its complimentary mRNA strand.

 

 

 

6. List the sequence of codons you used in activity 12.3 and for each, list its corresponding amino acid.

 

 

 

7. What is the amino acid sequence for the mRNA strand given on page 12/5?

 

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