Characteristics of Life Flashcards
(17 cards)
Movement
Change in Position
Responsiveness
Sense changes and react
Growth
Increase in size
Reproduction
Producing offspring
Respiration
Obtaining oxygen
Digestion
Breaking down food
Absorption
passing digesting products through membranes
Circulation
Movement of substances
Assimilation
Changing substances
Excretion
Removal of wastes
Metabolism
all the chemical changes that occur in the body
Energy
The capacity to do work
Homeostasis
maintaining the same internal environment
Receptors
senses that detect environmental conditions
Effectors
glands that respond to changes in the environment
Negative feedback loop
returns conditions to a set point (like a thermostat)
Positive feedback loop
amplifies occurrences, like the production of milk