The Otterspoor.com Practice Quiz O'matic : dna

1. What is the first step in the process of DNA replication?

a. Helicase must unzip (break) the bonds between bases pairs
b. DNA is bonded to a ribosome
c. Hydrogen bonds form between bases
d. chromosomes condense

2. Okazaki fragments form during DNA replication because:

a. mRNA is single stranded
b. Half of the DNA strand is inverted thus necessitating DNA Polymerase work in two directions, towards and away from the replication fork.
c. The base pair rule dictates that the amount of Adenine must equal the amount of Thymine
d. The coding strand is read from the 5' to 3' end

3. Which of the following is required for DNA replication to occur?

a. DNA helicase
b. Proofreading enzymes
c. DNA polymerase
d. all of these

4. A nucleotide consists of:

a. nitrogen base
b. nitrogen base and a sugar
c. nitrogen base, sugar, and phosphate
d. two nitrogen bases, a sugar, and a phosphate

5. The material responsible for bacterial transformation in Griffith's (the mouse guy) experiments was:

a. protein
b. capsules
c. DNA
d. heat

6. The Hershey-Chase blender experiment finally proved that:

a. bacteria could be transformed
b. DNA was the molecule of heredity
c. DNA was in the shape of a double helix
d. bases paired in a predictable way (A to T and G to C)

7. The "rungs" of the DNA ladder are made of:

a. phosphates and bases
b. sugars
c. sugars and phosphates
d. nitrogen bases

8. Before the Hershey-Chase experiment, many scientists believed that ________ carried the hereditary information.

a. proteins
b. phages
c. helicase
d. the plasma membrane

9. In order to transform to a virulent form of bacteria, rough bacteria must:

a. divide
b. be exposed to dead smooth bacteria
c. be exposed to radioactive phosphorous
d. infect a host

10. A DNA strand has the following bases: A-A-G-C-C-A. What are the bases on its complimentary strand?

a. A-A-G-C-C-A
b. A-C-C-G-A-A
c. T-T-C-G-G-T
d. C-C-A-T-T-C

There are plently more review quizzes where this one came from:

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