Chapter 1-1.1 Flashcards
Bio is the…
study of life
living things are composed of…
the same chemical elements as nonliving things
living things obey…
the same physical and chemical laws that govern everything in the universe
the cell is the
basic unit of structure and function of all living things.
unicellular or
multicellular
the levels of biological organization range from … to the biosphere
atoms
levels of biological organization
atom,molecule,cell,tissue,organ,organ system,organism,species,population,community,ecosystyem,biosphere
an ecosystem
is a community plus its physical environment
the biosphere
is a zone of air,land, and water where organisms exist
a community
is a collection of interacting populations within the same environment
a population
is all the members of a species within an area
an organism
is formed when organ systems are joined together
organs work together to
form organ systems
tissues make up
organs
similar cells combine to form
tissues
molecules join to form larger molecules within a
cell
atoms combine to form
molecules
the organization of life begins with
atoms
energy is
the capacity to do work
metabolism is
all the chemical reactions that occur in a cell
the sun is the
ultimate source of energy for nearly all life on earth
plants capture solar energy to preform
photosynthesis
photosynthesis is
a process that converts solar energy into the chemical energy of carbohydrates
chemicals are not used up when
organisms die
ecosystems are characterized by
chemical cycling and energy flow
energy from the sun flows through plants and other members of the food chain as one population feeds on
another
homeostasis is
the maintenance of internal conditions within certain boundaries
living organisms interact with
the environment and respond to changes in the environment
all living organisms must
reproduce to maintain a population
when organisms reproduce they pass on copies of their genetic information to the next generation. this is called…
genes
genes are composed of
dna
genes determine
the characteristics of an organism
dna stands for
deoxyribonucleic acid
an adaptation
is any modification that makes an organism better able to function in a particular environment
evolution is
the change in a population of organisms over time to become more suited in the environment
the diversity of life exists because
over long periods of time, organisms respond to changing environments by developing new adaptations.
