Molecular Biology

Use the information on this page, your textbook or your notes to answer the following questions.


1.  How many letters are in a codon?

2.   What do the codons tell the cell to make?


3.  What is the basic material of life?  What is it made of?


4.  How many base pairs does a human DNA molecule have?


5.  What is the Central Dogma? (Draw the diagram)


6.  What is produced during transcription?


7.   What enzyme produces RNA?


8.   What is translation?


9.   Where does it occur?


10.  What are the three parts of a nucleotide?


11. What are three differences between DNA replication and transcription?


12.  What are two things that information in DNA does?


13.  Draw a picture of a nucleotide with a purine base.


14.  What kind of bond holds the nucleotides together?


15.  Is a hydrogen bond a strong bond or a weak bond?  Why might this be useful in DNA replication or transcription?

16.  What is the area that is unzipped during replication called?


17.  What is the purpose of helicase?


18.  What proofreads the new DNA?


19.  What are some types of cells that constantly divide?


20.  What are 4 functions of proteins?




Useful websites:
Information about codons, DNA and transcription
http://library.thinkquest.org/C0122429/intro/genetics.htm
Information about what DNA does and nucleotides
http://science.howstuffworks.com/environmental/life/cellular-microscopic/dna1.htm
Information about DNA replication
http://science.howstuffworks.com/environmental/life/cellular-microscopic/dna3.htm
Information about proteins
http://science.howstuffworks.com/environmental/life/cellular-microscopic/dna4.htm