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Chapter Nine Stack

QuestionAnswer
A substance prepared from killed or weakened pathogens and introduced into a body to produce immunity. Vaccine
Describes a micro-organism or virus that causes diseases and that is highly infectious. Virulent
The trnasfer of genetic material in the form of DNA fragments from one cell to another or from organism to another. Transformation
A virus that infects bacteria. Bacteriophage
The sprial-staircase structure characteristic of the DNA molecule. Double Helix
In a nucleic-acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base. Nucleotide
A five-carbon sugar that is a component of DNA nucleotides Deoxyribose
Thr rules stating the cytosine pairs with guanine and adenine paors with thymine in DNA, and that adenine pairs with uracil in RNA. Base-Pairing Rules
A characteristic of nucleic acids in which the sequence of bases on the other. Complementary Base Pair
The process of making a copy of DNA. DNA Replication
An enzyme that unwinds the DNA double helix during DNA replication. DNA Heilcase
A Y-shaped point that results when the two strands of a DNA double helix separate so that the DNA molecule can be replicated. Replication Fork
An enzyme that catalyzes the formation of the DNA molecule. DNA Polymerase
Created by: ohawkins
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