Biology 1 SATP

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35 terms

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

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