Evolution Test Wednesday Warm Up: What type of biological molecules are enzymes? What is the function of an enzyme? Flush: What is your favorite ice cream flavor? Evolution Test Wednesday

Enzymes Enzymes are proteins They act as biological catalysts and speed up chemical reactions They speed up reactions by lowering the activation energy- the energy required for a reaction to take place

Human Evolution

Phylogenetics Scientists can map out evolutionary relationships using phylogenetic trees Work as a group (same problem, same time) to complete the phylogenetic tree activity Answers can be found in your brain, in the reading, or in the pictures! If your whole group is stumped, raise your hand and I will come help!

Dichotomous Keys What does the prefix di mean? A dichotomous key gives the reader TWO choices to select from in a cascade of questions The goal is to take an unknown species, and identify it using the dichotomous keys

Dichotomous Keys Complete the worksheet Part 1: Analyze dichotomous keys and identify unknown organisms Part 2: Create your own dichotomous keys