Characteristics of Life
All living things are made up of this thing
cells
living things are alike in what ways?
made of cells, reproduce, maintain homeostasis
what are cells
the basic unit of structure and function
What are cells
the basic units of structure and function
living things use what to maintain life and grow
energy
living things obtain _______ from the environment
nutrients
living organisms break down nutrients to store energy through what process?
cell respiration
what comes first, cells or organs
cells
true or false: living things don't know how to maintain internal stability
false
true or false: cells transport materials throughout an organism
true
what is excretion
removal of waste
most cells contain specialized structures called what?
organelles
to maintain homeostasis, organisms must do what?
respond and adapt to internal and external environment
what four elements are all living things made of?
carbon, hydrogen, oxygen, and nitrogen
what is synthesis
combining simple substances into complex substances
cells are to tissues as organs are to
organ systems