DNA #1

Monomers for the synthesis of DNA are called ________.

• fatty acids

• nucleotides

• amino acids

• monosaccharides

• disaccharides

In DNA, the two purines are ________, and the two pyrimidines are __________.

• adenine (A) and guanine (G)… cytosine (C) and thymine (T)

• adenine (A) and thymine (T) … cytosine (C) and guanine (G)

• adenine (A) and cytosine (C)… guanine (G) and thymine (T)

• cytosine (C) and thymine (T) … adenine (A) and guanine (G)

• cytosine (C) and guanine (G) … adenine (A) and thymine (T)

On this model of a DNA nucleotide, what color is deoxyribose?

• Yellow,

• Green

• Black

• Blue

• White

On this model of a DNA nucleotide, what color is the base?

• Yellow

• Green

• Black

• Blue

• White

In this model of DNA, what color is the phosphate group?

• Yellow

• Blue

• Green

• Black

• white

If one strand is 5'-GCAC-3', the complementary strand must be

• 3'-CACG-5'

• 3'-GTGC-5’

• 3'-CGTG-5'

• 3'-GCAC-5'

• 3'-ATCG-5'

For this question, consider only DNA nucleotides. How many different types of nucleotides are there?

• 5

• 8

• 16

• 3

• 4

The two strands of a DNA double helix are antiparallel. This means that __________.

• only one of the two strands can be used as a template for replication, because DNA polymerase only works in one direction

• The two strands are mirror images

• one strand runs in the 5' to 3' direction, and the other runs in the 3' to 5' direction

• they both run in the 3' to 5' direction

• one strand is actually composed of RNA

If we compared two different nucleotides, which parts would be identical between the two?

• Sugar and phosphate only

• Sugar, phosphate and base

• Phosphate only

• Base only

• Sugar only