Characteristics of life Flashcards
Movement
change in position of the body or of a body part; motion of an internal organ
responsiveness
reaction to a change taking place inside or outside the body
growth
increase in body size without change in shape
reproduction
production of a new organisms and new cells
respiration
obtaining oxygen, removing carbon dioxide, and releasing energy from foods
digestion
breakdown of food substances into simpler forms that can be absorbed and used
absorbtion
passage of substances from place to place in body fluids
assimilation
changing of absorbed substances into chemically different forms
excretion
removal of wastes produced by metabolic reactions
what are the requirements of life?
food, water, pressure, oxygen, heat