Advanced Biology

Properties of Life

Biology

The scientific study of life

1.1

Properties of Life

1.2

Organization of Life

1.4

Organization of Life

1.4

Three Major Themes

Cell Theory Energy Transfer Evolution

1.3

Cell Theory

Cells are highly ordered

1.3

Cell Theory

Cell structures have specific functions

1.3

Cell Theory

Cells carry out chemical reactions (metabolize)

1.3

Cell Theory

Cells use metabolism to: Reproduce (with heredity) Regulate Communicate Move Grow

1.3

Where do cells get the energy?

1.3

Energy Transfer

Cells use energy Cells gather energy through

transformation

Light Food

1.3

Evolution

Where did life come from?

Evolution

Three hypotheses on the origin of life Creation Extraterrestrial Chemical Evolution

Creation

The idea that life originated as the creation of a supreme being

Extraterrestrial

Based on: Presence of basic molecules of life found in

Meteorites Comets Mars

Chemical Evolution

Cells arose from the assembly of simple organic molecules present in the Earth’s primitive oceans about 3.7 billion years ago

1.3

Heredity in reproduction

All living things contain coded information in the form of:

DNA This allows for both continuity and

change in living things

1.3

Scientific Method

Discovery Science Based on observation Usually qualitative

Experimental Science Based on experimentation (testing a hypothesis)

Usually quantitative

1.5