Vocabulary
variable in a scientific experiment that is affected by another variable, called the
independent variable
dependent variable
theory that all living things are made up of cells, all life functions occur within cells,
and all cells come from already existing cells
What is cell theory?
small molecule that is a building block of protein
What is amino acid?
characteristic that helps living things survive and reproduce in a given environment
What is adaptation?
solution with a pH lower than 7
What is acid?
any type of data that may be used to test a hypothesis
evidence
relationship between living things that depend on the same resources in the same
place and at the same time
What is competition?
force that holds molecules together
What is chemical bond?
the variety of life and its processes; including the variety of living organisms, the
genetic differences among them, and the communities and ecosystems in which they occur.
What is biodiversity?
solution with a pH higher than 7
What is base?
special type of scientific investigation that is performed under controlled conditions
experiment
all the living things in a given area together with the physical factors of the nonliving
environment
What is ecosystem?
double spiral shape of the DNA molecule
What is double helix?
group of similar ecosystems with the same general type of physical environment
What is biome?
type of chemical bond that forms between molecules: found between water molecules
What is hydrogen bond?
possible answer to a scientific question; must be falsifiable
hypothesis
change in the characteristics of living things over time; the change in species over time
What is evolution?
simple sugar such as glucose that is a building block of carbohydrates
What is monosaccharide?
part of Earth where all life exists, including land, water, and air
What is biosphere?
scale that is used to measure acidity
What is pH?
variable in a scientific experiment that is manipulated by the researcher to investigate
its effect on another variable called the dependent variable
independent variable
theory that the characteristics of living things are controlled by genes that are passed from parents to offspring
What is gene theory?
organic compound such as DNA or RNA
What is nucleic acid?
an individual living thing
What is organism?
difference in electrical charge between different parts of the same molecule
What is polarity?