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bio test chapter.1
An organism that cannot make its own food.
An organism that makes its own food
Control center of the cell
the basic structural and functional unit of all organisms
Made of a single cell
Consisting of many cells
A living thing
A change in an organism's surroundings that causes the organism to react
A reaction to a stimulus.
the mistaken idea that living things can arise from nonliving sources
Process by which organisms maintain a relatively stable internal environment.
Factor in an experiment that a scientist purposely changes; also known as independent variable
The factor that may change in response to the manipulated variable
what the exparamental goup is being compared to
A subject or group of subjects in an experiment that is exposed to the factor or condition being tested.
needs of living things
Water, food, living space, and stable internal conditions
6 characteristics of living things
chemicals of life,
response to surroundings,
growth and development,
A design in which researchers manipulate an independent variable and measure a dependent variable to determine a cause-and-effect relationship
eukaryotes tha cannot be classified by animals,plants or fungi
these are algal blooms that occur in salt water(diatoms)
anchor seaweed bodies to rocks
A reproductive cell with a hard, protective coating
A chemical that produces color
Grow in soil, on trees and on the bodies of turtles and frogs; smallest of all green plants
(genetics) any event that changes genetic structure
A close relationship between two species that benefits at least one of the species.
A long, whip-like filament that helps in cell motility. Many bacteria are flagellated, and sperm are flagellated.
saclike organelles that expand to collect excess water and contract to squeeze the water out of the cell
A temporary, foot-like extension of a cell, used for locomotion or engulfing food
Hairlike projections that extend from the plasma membrane and are used for locomotion