What makes something living?What makes something non-living?

Turn in:1. Scientific Method Homework

Word break down

• What does “bio” mean?– What is a biography?– What does it mean to write your instagram bio?

• What does “-ology”mean?– Psychology? Sociology?– Bonus points: campanology?

Biology

• Biology means the study of life

• Based on that definition, what should we learn in this class?

What does it mean to be living?

What does it mean to be living?

• Lucky for us, scientists created a list of 7 criteria that an organism must meet in order to be classified as ‘living’

7 Characteristics of Life

• 1. All living things are composed of cells.

Matter

• Matter is anything and everything that takes up space– Desks, you, air, bananas,

cockroaches etc.

• All matter, living and non-living, is made up of atoms– These are like tiny Legos

that get put together to make up something larger

Atoms

• A computer is made up of atoms

• You are made up of atoms

• What is the difference?

7 Characteristics of Life

• 2. All living things have metabolism and use energy.

This is usually in the form of ATP.

What do we need energy for?

7 Characteristics of Life

• 3. Reproduce and have heredity

Can be sexual or asexual

7 Characteristics of Life

7 Characteristics of Life• 4. Grow and Develop

7 Characteristics of Life

• 5. Respond to stimuli

What is a stimulus?

In this picture, what is responding?

7 Characteristics of Life

• 6. Evolve and adapt over time

What is the difference?

• Evolution: genetic change over time– Individuals do NOT evolve– Populations Evolve

• Adaptation: change in order to better fit the environment– Individuals CAN adapt

7 Characteristics of Life

• 7. Maintain homeostasis

• Homeostasis: the ability of a system to maintain equilibrium

What about viruses???

• Viruses do: have DNA or RNA, respond to stimuli, evolve, require energy

• Viruses are not: able to reproduce on their own, made up of cell(s),

Ebola Virus