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Biology Midterm 1/5

STUDY
PLAY
Reproduction
Needed for a species to survive
unicellular
containing one cell
irritability
the ability of an organism to respond a stimulus
anabolism
building up
catabolism
breaking down
metabolism
all of the chemical reactions that occur in an organism
sexual reproduction
two cells from different parents unite to form the first cell of a new offspring
homeostasis
the maintenance of a stable internal environment
DNA
Deoxyribonucleic acid, unique genetic material found in all living things
RNA
ribonucleic acid, a single-stranded nucleic acid that passes along genetic messages
viruses
not living because they cannot reproduce without a host (living organism)