Biology Characteristics of Life

autotroph

make their food internally

heterotroph

get energy from breaking down food from other sources

unicellular

one-celled organism

multicellular

more than one cell

colonial organism

colony of small almost identical organisms that function together

growth

organism gets larger via cell division

development

change in structure through life cycles

reproduction

must happen for species survival but not every individual must do it

heredity

universal genetic code

sexual reproduction

genetic information from two parents to produce offspring

asexual reproduction

reproduction through the splitting of cells

inside cells

cell parts (organelles) perform specific functions for regulation

inside organisms

cells, tissues, organs that perform specific functions

internal regulation

homeostasis, maintain body temperature, maintain respiration, digestion, pH bloodstream, H2O balance

response to environment

living things will respond to stimuli in their environment

stimulus

any signal that causes behavior change

response

behavior change

evolution and adaptation

populations of organisms change over time to adapt to their environment (natural selection)

self-feeding

Some organisms, known as autotrophs, have the ability to make their own food. What does autotroph mean?

adapt to environment

Which characteristic of living things is a requirement of a species but not a capability of an individual organism?

ability to move

Which of the following is not a characteristic of all living things?

organisms must respond to stimuli

What is true of all organisms?

exchanging gases through its gills to regulate oxygen levels

Which example is an example that a fish most likely uses to maintain homeostasis within its body?

a tulip opens at sunrise and closes at sunset

Which of the following is an example of a response to stimulus?