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BIO1010
101 test 2
27
Biology
Undergraduate 2
03/09/2011

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Term
Genes
Definition
provide the information for building a protein
Term
Mutation
Definition
a change in the sequence of bases in the DNA
Term
Mutagen
Definition
high-energy radiation chemicals that resemble bases
Term
Expressed
Definition
transcribed into Mrna and translated into protein
Term
Activator proteins
Definition
bind to genes; turning them on
Term
Regulatory Genes
Definition
control expression of other genes by turning them on and off
Term
number of chromosomes in the human body
Definition
46
Term
pairs of chromosomes in the body
Definition
23
Term
where are the chromosomes located in the human body?
Definition
nucleus
Term
Homologous chromosomes
Definition
chromosomes that make up a pair and have the same genes in the same locations
Term
XX
Definition
women
Term
XY
Definition
men
Term
SRY gene
Definition
codes for an activator protein that binds to other genes turning them on
Term
Gametes
Definition
sex cell that only contains one chromosome from each homologous pair
Term
Diploid
Definition
cells that contain homologous pairs of chromosomes (all cells in the body except sex cells)
Term
Haploid
Definition
cells that contain 1 chromosome from each pair (sex cells only)
Term
Cancer
Definition
uncontrolled cell division
Term
oncogene
Definition
a growth-regulatory gene that has malfunctioned, stimulating uncontrolled cell division
Term
Tumor-suppressor gene
Definition
a gene that inhibits cell
Term
Carcinogens
Definition
high-energy radiation, chemicals that mimic bases, viruses that insert oncogenes into DAN of cell
Term
How the body protects itself from cancer
Definition
DNA repair molecules, the immune system destroys abnormal cells
Term
Radiation
Definition
destroys the DNA in cancer cells
Term
Chemotherapy
Definition
poisons the cancer, affects all cells undergoing cell division
Term
Alleles
Definition
different possible forms of the same gene
Term
Genotype
Definition
the combination of 2 alleles an individual possesses for a particular gene
Term
Blood types
Definition
the gene coding for blood surface protein, has 3 possible alleles
Term
Genetic engineering
Definition
a process for modifying an organisms genes
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