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DNA/Diseases
DNA reproduction
31
Biology
10th Grade
05/03/2009

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Term
virus
Definition
a package of nucleic acid wrapped in a protein coat
Term
bacteriophage
Definition
a virus that infects bacteria
Term
DNA
Definition
holds the heritable genetic information of an organism
Term
nucleotides
Definition
the building blocks of nucleic acid polymers
Term
nitrogenous base
Definition
a single or double ring of carbon and nitrogen atoms with functional groups
Term
pyrimidines
Definition
thymine and cytosine-single ring structers
Term
purine
Definition
adenine and guanine- double ring structures
Term
DNA replication
Definition
the process of copying the DNA molecule
Term
Nerinburg
Definition
scientist that figured out the genetic code
Term
Griffith Experimentj
Definition
experiment that used mice, determined there was a transforming factor
Term
Avery Experiment
Definition
showed that DNA was the transforming factor
Term
Hershey & Chase Experiment
Definition
using viruses and radioactive probes, showed DNA was the transfroming factor
Term
DNA polymerases
Definition
in DNA replication, these enzymes make the covalent bonds between the nucleotides of the new DNA strand
Term
RNA
Definition
nucleic acid whose sugar is ribose instead of deoxyribose, RNA containss uracil, RNA is a single strand not double helix like DNA
Term
transcription
Definition
DNA's nucleotide sequence is converted to the form of a single-stranded RNA molecule
Term
translation
Definition
converts nucleic acid language into amino acid language
Term
codon
Definition
a three base word that codes for one amino acid
Term
mRNA
Definition
transcribed from a DNA template
Term
RNA polymerase
Definition
transcription enzyme that links the RNA nucleotides together
Term
tRNA
Definition
translates the three-letter codons of mRNA to amino acids that make up proteins
Term
introns
Definition
nonsense groups of letters in initial RNA transcripts that have to be removed
Term
exons
Definition
coding regions of the mRNA transcript
Term
RNA splicing
Definition
process of removing introns and putting together the extrons
Term
anticodon
Definition
three bases on tRNA that are complementary to a specific codon on the mRNA
Term
rNA
Definition
coordinates the functioning of mRNA and tRNA
Term
mutagens
Definition
physical or chemical agents that cause mutations
Term
taxonomy
Definition
the study of organisms and how they are related to each other through a system of classification
Term
phylogenetic tree
Definition
shows how the classification system works to create life on Earth
Term
disease
Definition
a malady of the body that lasts for a prolonged period of time
Term
pathogens
Definition
microbial life that causes diesease, they invade the body
Term
vectors
Definition
organisms that transmit the disease agent to another organism so that the life cycle can be complete
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