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   DNA Structure and Function Lab Report

  1. DNA Structure
  2. Which two scientists are credited with discovering DNA?
  1. Name the nitrogen bases that are purines.
  1. Which nitrogen base pairs with thymine?
  1. List the three components of a nucleotide.
  1. DNA Replication
  2. What is the purpose of DNA replication?
  1. How many times does replication occur in the life of a cell?
  1. In the Lab, Exercise 2, the original strand on the left had the bases shown below. Input the new bases that correctly pair with the original strand.

           

Original

New

C

A

G

T

  1. RNA Structure
  1. Describe the structure and function of RNA.
  1. Refer to Exercise 3 and record the bases of the RNA strand produced from the replicated DNA strand.

DNA

RNA

C

A

G

T

  1. Record the differences between DNA and RNA in the table below.

DNA

RNA

Sugars

Bases

Strands

  1. RNA Synthesis

  1. The process of assembling RNA is called _________.
  1. How is replication different from transcription?
  1. Refer to Exercise 4. Write the letters for the base sequence of mRNA in the spaces below DNA. Note that the order is reversed; start with the 3’ end of the DNA strand and the 5’ end of the mRNA strand. Transcription is DNA to mRNA. Note RNA contains Uracil instead of Thymine; There is no thymine in RNA.

DNA

3’

C

G

T

C

G

T

C

C

A

A

T

T

5’

mRNA

5’

3’

  1. Protein Synthesis

  1. What type of RNA provides amino acids to build polypeptide chains?

  1. If a mRNA strand has the bases 5’ CUC 3’, what amino acid will be translated? Refer to the printable chart in Exercise 5.

  1. Where in the cell does translation occur?
  1. Genes

  1. What could be the problem if there is a change in the base sequence of a gene as it is passed down to the offspring?
  1. Give an example of a disorder that results from changes in the amino acid sequence.
  1. What causes sickle cell anemia?
  1. Gene Cloning
  1. What is the function of a plasmid?
  1. Print the document from Lab, Exercise 6. Complete the activity along with the video demonstration. Sign, date, and take an image of your final product and include with this lab report.
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