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Ch. 9 DNA

Chapter 9 Biology Vocabulary

QuestionAnswer
vaccine substance prepared from killed or weakened disease-causing agents, including certain bacteria
virulent able to cause disease
transformation change in genotype caused when cells take up foreign genetic material.
bacteriophage virus that infects bacteria
double helix two strands twisted around each other.
nucleotide subunits that make up DNA
deoxyribose five-carbon sugar in DNA nucleotides
base-pairing rules rules the state the following: cytosine pairs with guanine and adenine pairs with thymine in DNA. adenine pairs with uracil in RNA.
complementary base pairs sequence of bases on one strand determines sequence of bases on the other strand.
DNa replication process of making a copy of DNA
DNA helicases open the double helix by breaking the hydrogen bonds that link the complementary nitrogen bases between two strands.
replication forks area where double helix separates
DNA polymorases enzymes that move along the DNA strands
Created by: kobylangner
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