Part
One - The Science and Building Blocks of Life 1
1.
Studying Life 2
1.1.
What Is Biology? 3
Living organisms consist of cells 4
The diversity of life is due to evolution
by natural selection 5
Biological information is contained
in a genetic language common to all
organisms 7
Cells use nutrients to supply energy
and to build new structures 7
Living organisms control their internal
environment 7
Living organisms interact with one
another 9
Discoveries in biology can be generalized 9
1.2. How
Is All Life on Earth Related? 10
Life arose from nonlife via chemical
evolution 10
Biological evolution began when cells
formed 11
Photosynthesis changed the course
of evolution 11
Eukaryotic cells evolved from prokaryotes 11
Multicellularity arose and cells became
specialized 12
Biologists can trace the evolutionary
Tree of Life 12
1.3.
How Do Biologists Investigate
Life? 13
Observation is an important skill 13
The scientific method combines observation
and logic 13
Good experiments have the potential
of falsifying hypotheses 14
Statistical methods are essential
scientific tools 15
Not all forms of inquiry are scientific 16
