Unit 2A Quiz

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

Which 2 molecules form the sides (backbone) of the DNA ladder?

• deoxyribose and adenine
• deoxyribose and a hydrogen bond
• deoxyribose and the nucleus
• deoxyribose and phosphate

The process by which a DNA molecule is copied is called _____.

• binary fission
• mitosis
• replication
• translation

Where does DNA replication take place?

• Nucleus
• Ribosome
• Cytoplasm
• Golgi Body

An enzyme that breaks the hydrogen bonds holding the base pairs together as it UNWINDS and UNZIPS the double helix, allowing new nucleotides to bind to the single strands by base pairing.

• ligase
• RNA polymerase
• DNA Helicase
• DNA polymerase

What are the following rules called?
1 - The amount of A, T, G, and C varies from species to species.
2 - In each species, the amount of A = T and G = C.

• Rosalind's Rules
• Watson's Rules
• Crick's Rules
• Chargaff's Rules

Transcription is the process where 

• DNA is replicated
• DNA is copied into mRNA 
• DNA is copied in tRNA
• DNA is copied

One difference between DNA and RNA is that RNA....

• is double stranded 
• contains the base Thymine
• contains the base Uracil 
• contained the base Guanine