Biology I : Chapter 1 : Biology in the 21st Century

All living things and all the places they are found on Earth

• species

• biodiversity

• habitat

• biosphere

The variety of organisms in a given area

• natural selection

• biodiversity

• species

• system

A group of organisms that are closely related and can produce fertile offspring

• system

• biosphere

• species

• DNA

The study of living things and their interactions with their environment

• physics

• chemistry

• astronomy

• biology

Knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws and principles that can be verified or tested

• hypothesis

• science

• evolution

• mitochondria

Any individual living thing

• organism

• cell

• species

• atom

The basic unit of life

• atom

• DNA

• cell

• organism

The chemical processes that build up or break down materials

• metabolism

• respiration

• cannibalism

• circulation

The genetic material that contains the information that determines inherited characteristics

• vacuole

• mitochondria

• cytoplasm

• DNA

An organized group of related parts that interact to form a whole

• species

• ecology

• cell

• system