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35 terms

Biology 1 SATP

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biolgy
the study of life
cells
smallest unit capable of all life functions
reproduction
the process by which organisms make more of their own kind from one generation to the next
metabolism
the sum of all the chemical reactions carried out in an organism
homeostasis
the maintenance of stable internal conditions in spite of changes in the external environment
heredity
passing of traits from parent to offspring
genes
sets of inherited instructions for making proteins
mutation
a change in DNA of a gene
evolution
change in the inherited traits of species over time
species
a group of genenetically over time
natural selection
process in which organisms with favorable genes are most likely to survive and reproduce
ecology
the environment as it relates to living organisms
HiV
a virus that destroy the immune system
cancer
any malignant growth or tumor caused by abnormal and uncontrolled cell division
cystic fibrosis
a human genetic disorder caused by a recessive allele for a chloride channel protein; characterized by an excessive secretion of mucus and consquent vulnerability to infection; fatal if untreated (4% whites are carriers - most common lethal genetic disease)
observation
the act of observing
hypothesis
a tentative theory about the natural world
prediction
the act of predicting (as by reasoning about the future)
pH
is the relative measure of the hydrogen ion concentration within a solution
experiment
a planned procedure to test a hypothesis
control group
a group in an experiment that recieves no experimental treatment
independent variable
the variable was the acid pH level
dependent variable
variable that is measured in an experiment
theory
a set of related hypothesis that have been tested and confirmed many times
atom
the smallest unit of matter
compound
a substance made of the joined atoms of 2 or more different eelements
molecule
a group of atoms held together by convalent bonds
ion
molecules that have gained or loseone or more electrons
cohension
is an attraction between substances of the same kind
adhension
is an attraction between different substances
solution
is a mixture in which one or more substances are evenly distrubuted in another subhstances
acids
Substances that release Hydrogen in water
bases
compounds that reduce the concentration of hydrogen ions
carbohydrates
organic compounds made of carbon, hydrogen, and oxygen atoms in the proportion of 1:2:1
monosaccharides
such as glucose