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15 terms

Chapter 9 Vocabulary

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Deoxyribose
Five-carbon sugar found in DNA nucleotides
Polymearse
Enzyme that adds nucleotides to expose nitrogen bases
Vaccine
substance prepared from killed or weakened microorganisms
Transformation
Change in genotype of bacteria caused by the presence of foreign genetic material
Double Helix
the shape of DNA; two strands twisted around each other like a winding staircase.
Bacteriophage
a virus that infects bacteria
Helicase
enzyme that separates DNA by breaking the hydrogen bonds that link the nitrogen bases
Nucleotides
The subunits that make up DNA.
complementary base pairs
relationship of two DNA strands to each other.
Virulent
Able to cause disease.
Base-Pairing rules
describe the arrangment of the nitrogen bases between two DNA strands
DNA Replication
the process by which DNA is copied
replication fork
the area that results after the double helix separates during replication
DNA helicase
open the double helix by breaking the hydrogen bonds that link the complementary nitrogen bases between the two strands
DNA polymerases
enzymes that move along each ot the DNA strands