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review for final exam
LE regents vocabulary and simple definitions
23
Biology
10th Grade
06/10/2008

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Term
photosynthesis
Definition
rearranging CO2 and H2O using sunlight energy into food and waste O2
Term
stomate
Definition
holes in leaf that allow plant cells to exchange gases
Term
ribosome
Definition
organelle where protein synthesis occurs
Term
excretion
Definition
process of removing cell waste from the body
Term
dependent variable
Definition
the data in your experiment
Term
control group
Definition
the set-up in your experiment that gets the ordinary conditions, not the conditions being tested
Term
heterotroph
Definition
synonym for consumer
Term
meiosis
Definition
process of making new cells with only one of each chromosome pair
Term
cancer
Definition
disease involving mitosis out of control
Term
mutation
Definition
error in the DNA nucleotide sequence
Term
gene
Definition
segment of a chromosome that stores the instructions for making one amino acid chain
Term
protein
Definition
organic nutrient that is made of amino acids
Term
diffusion
Definition
molecules spreading out from high concentration to low concentration without using energy
Term
vaccine
Definition
shot containing dead or weakened pathogen
Term
pathogen
Definition
synonym for germ
Term
antibody
Definition
y-shaped protein that attaches to non-self antigens to immobilize them
Term
global warming
Definition
increase in Earth's average surface temperature
Term
natural selection
Definition
nature's version of selective breeding - the best individuals survive and, if they reproduce, pass on their great genes to the next generation
Term
carrying capacity
Definition
the population size the habitat can support over time; the population may increase or decrease but it usually comes back to this
Term
receptor
Definition
structure in the cell membrane that is shaped to fit chemical messengers
Term
zygote
Definition
fertilized egg
Term
differentiation
Definition
process of expressing some genes and not other to give a cell a special job
Term
AIDS
Definition
collection of illnesses that result from an extremely weakened immune system due to a specific viral infection
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