DNA Structure & Replication Exam Review |
Chapter 9 Biology
What are the three parts of the nucleotide?
Sugar, phosphate, base
What kind of sugar is found in a nucleotide?
Deoxyribose
Which nucleotide component contains nitrogen?
Bases
Name the four nitrogen bases
Guanine, Adenine, Thymine, and Cytosine
What makes up the rungs of the "ladder"?
Bases
What makes up the backbone of the "ladder"?
Sugar and phosphate
What type of biological molecule is a DNA helicase?
Enzyme
What is the role of the DNA helicase in the replication of DNA?
Unzips the DNA molecule
What rule is used to join the free nucleotides to the exposed bases of the DNA?
Complementary base pair rule
Why is DNA replication called semi-ceonservative?
Because half of it is original and half of it is new
hydrogen bonds
the two strands of dna that are held together with hydrogen bonds between the nitrogen bases
double helix
Chapter 9 Biology
What are the three parts of the nucleotide?
Sugar, phosphate, base
What kind of sugar is found in a nucleotide?
Deoxyribose
Which nucleotide component contains nitrogen?
Bases
Name the four nitrogen bases
Guanine, Adenine, Thymine, and Cytosine
What makes up the rungs of the "ladder"?
Bases
What makes up the backbone of the "ladder"?
Sugar and phosphate
What type of biological molecule is a DNA helicase?
Enzyme
What is the role of the DNA helicase in the replication of DNA?
Unzips the DNA molecule
What rule is used to join the free nucleotides to the exposed bases of the DNA?
Complementary base pair rule
Why is DNA replication called semi-ceonservative?
Because half of it is original and half of it is new
hydrogen bonds
the two strands of dna that are held together with hydrogen bonds between the nitrogen bases
double helix
