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A substance used in a vaccination that consists of weakened or killed pathogens that can trigger the immune system into action
A form of asexual reproduction in which one cell divides to form two identical cells.
A reproductive process that involves only one parent and produces offspring that are identical to the parent.
A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents.
The process in which a unicellular organism transfers some of its genetic material to another unicellular organism.
A process of heating food to a temperature that is high enough to kill most harmful bacteria without changing the taste of the food.
An organism that breaks down chemicals from dead organisms and returns important materials to the soil and water.
A "false foot" or temporary bulge of cytoplasm used for feeding and movement in some protozoans.
The cell structure that collects extra water from the cytoplasm and then expels it from the cell.
A close relationship between two organisms in which at least one of the organisms benefits.
A eukaryotic organism that has cell walls, uses spores to reproduce, and is a heterotroph that feeds by absorbing its food.
A form of asexual reproduction of yeast in which a new cell grows out of the body of a parent.
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