Features of living things Lecture 1.3

What does it mean to be living? There are differences between living and non- living things. There are differences between living and non- living things. Icicles grow, but are they alive? Icicles grow, but are they alive? A fire responds and converts energy, but is it alive? A fire responds and converts energy, but is it alive?

Features of living things All living things share the same 8 characteristics All living things share the same 8 characteristics

Living things are made of units called cells

Living things reproduce

Living things are based on a universal genetic code Models of deoxyribonucleic acid: DNA

Living things grow ….

And develop Wood frog life cycle

Development is change over time

Living things obtain and use materials and energy

Energy is stored in the form of ATP

Living things respond to their environment

Living things maintain a stable internal environment : homeostasis Why does one shiver and the other sweat?

As a group, living things change over time Horse and plant evolution