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science
words to know
12
Science
9th Grade
12/01/2011

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Term
Chromosome
Definition
A thredlike structure in a cell nucleus that carries genes
Term
DNA
Definition
A biological molecule found in the cell nucleus that carries genetic information
Term
Gene
Definition
Segment of DNA located at a specific place on a chromosome, each contain information to produce proteins
Term
Nucleolus
Definition
A membrain free organelle that floats in the interior of the nucleus and ribosomes
Term
Nucleus
Definition
In chemistry the positively charged center of an atom, which contains proyons and neutrons
Term
Protiens
Definition
Essentail materials requried for the cell to carry out activities necessary for its survival
Term
Gene mutation
Definition
A change in the specific order of the A, G, C and T bases that make up the particular
Term
Gene therapy
Definition
Techniques developed to alter mutated genes in order to make them fuction normally
Term
Mutagen
Definition
Substances or factors that can cause mutations in DNA
Term
Negative Mutation
Definition
A mutation that harms an organisms or reduses the probility that organisms with the mutation can produce offspring or survive in the environment
Term
Nuetral Mutation
Definition
A mutation that does not affect the organisms or does not increase or decrease the survival rate of the organism
Term
Positive Mutation
Definition
A mutation that benifits and organism
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