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DNA Test - AP Bio
Regulation of Gene Expression; 2nd semester test
Question | Answer |
---|---|
Proline, Methionine, and Aspartic acid represent three types of | Amino Acids |
What do the 5’ and the 3’ represent at the ends of a DNA molecule? | The 5th and 3rd carbon on the sugar, while the phosphate connects to the 5th carbon. |
Name the nitrogen bases | Adenine, Cytosine, Guanine, and Thymine. |
How do the bases connect? | A – T, G – C |
Which of the bases are purines and pyridines? | A + G are Purines; T + C and Pyrimidines. |
What are the number of hydrogen bonds formed between the bases? | A – T: 2; G – C: 3. |
What 3 parts make up a nucleotide? | Phosphate – Sugar – Base |
Describe the Hershey and Chase experiment. | Tagged protein and DNA to see which got infected by a virus. |
Describe the experiment by Griffith on mice w/ S and R bacteria. | R – Harmless, until heated; S – kills, until heated. |
What’re Okazaki fragments? | Openings in Lagging Strand later rejoined by the DNA Ligase. |
What holds the two sides of DNA together? | (weak) Hydrogen bonds. |
Where is Protein assembled from the message on the RNA? | Cytoplasm |
What’s the shape of DNA? | Double Helix |
What’s the process of copying DNA? | Replication |
What’re the sections of DNA that code for a trait? | Gene |
What carries the message of DNA to the ribosomes? | RNA |
DNA stands for | Deoxyribonucleic Acid |
RNA stands for | Ribonucleic Acid |
What’s the sugar found in DNA? | Deoxyribose |
Who established the structure of DNA? | Watson and Crick |
DNA is found where in the cell? | Nucleus |
What does the DNA Helicase do? | Unzips the bases / breaks the hydrogen bonds. |
What does the DNA Polymerase do? | Pairs the bases |
How many different codons are there? | 64 |
What does Semi-Conservative mean? | 1 old strand paired with one new strand. |