Chapter 1: Energy Matter Flashcards
- share set of characteristics that collectively set apart from nonliving matter
- have biological molecules that contain instructions for building other molecules
- gather energy and materials form their surroundings to build new biological molecules
living organisms
characteristics that depend on the level of organization, but do not exist at lower levels
emergent properties
many single cells, such as bacteria and protozoans
unicellular organisms
plants and animals are made up of groups of interdependent cells
multicellular organisms
groups of organisms of the same kind that live together in the same place
populations
group of all the populations of different organisms that live in the same place
community
includes the community and the nonliving environmental factors with which it interacts
ecosystems
includes all the ecosystems of Earth’s waters, crust, and atmosphere
biosphere
the ability of a cell or organism to extract energy from its surroundings and use that energy to maintain itself , grow and reproduce
metabolism
electromagnetic energy in sunlight is absorbed and converted into chemical energy in biological molecules
photosynthesis
organisms break down biological molecules (with oxygen) releasing chemical energy for cellular activities
cellular respiration
- photosynthetic organisms
- assemble complex molecules (sugars) from water and CO2
primary producers
- animals
- feed directly or indirectly on the complex of molecules manufactures by plants
consumers
- bacteria and fungi
- feed on dead organisms and break down biological molecules into raw materials, which may then be recycled by producers
decomposers
- regulation of internal body temperature within a narrow range
- steady internal condition
homeostasis
