Question

dna review quiz

1. what is the structure of dna called?
2. what are the four base pairs of dna?
3. draw a 20 letter dna template strand and the complementary strand.
4. what is the function of dna polymerase?
5. what are the 3 building blocks of dna?
6. the ______________ is the structure that contains all three building blocks of dna?
7. dna located in the ______________ of a human cell.
8. dna located in the ______________ of a bacteria cell.
9. dna located in the ______________ of a virus.
10. dna has a ______________ charge.
11. a section of dna that codes for a protein is called a ______________.

Explanation:

Answer:

1. Double - helix
2. Adenine (A) pairs with Thymine (T), Guanine (G) pairs with Cytosine (C)
3. (Example) Template strand: A T G C A T G C A T G C A T G C A T G C

Complementary strand: T A C G T A C G T A C G T A C G T A C G (Sketch two parallel strands with these sequences, showing base - pairing: A - T, G - C)

1. Synthesizes new DNA strands by adding nucleotides to a pre - existing template strand during DNA replication (also involved in proofreading and repair)
2. Phosphate group, deoxyribose sugar, nitrogenous base (adenine, thymine, guanine, cytosine)
3. Nucleotide
4. Nucleus (and also in mitochondria)
5. Nucleoid region (and also in plasmids)
6. Capsid (in some viruses; some viruses have RNA instead of DNA, but for DNA viruses, the DNA is in the capsid)
7. Negative
8. Gene