Science Quiz
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17 Terms
6 characteristics of living things
Made of cells
Contain similar chemicals
Use energy
Respond to stimuli
Grow and develop
Reproduce
the basic unit of structure and function in living things
cell
single-celled organism
Unicellular
organism consisting of many cells
Multicellular
The most common chemical in cells
Water
five chemicals found in cells
water, carbohydrates, proteins, lipids and nuclei acids
A change or signal in the environment that can make an organism react
stiumulus
An action or change in behavior due to a stimulus
response
How cells are powered
energy
Process by which producers get energy from sunlight
Photosynthesis
The mistaken idea that living things arise from nonliving sources
Spontaneous generation
Four needs of living things
water, food, space, homeostasis
All living things consume this for energy
food
Organisms that make their own food
Producers or autotrophs
Organisms that cannot make their own food
consumers or heterotrophs
half of human blood is made up of this chemical
Water
The maintenance of stable internal conditions
Homeostasis