You should be able to identify these by their structure Biomolecules You should be able to identify these by their structure

Lipids Figure 2.14a, b Slide 2.31 Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

Enzymes Act as biological catalysts Increase the rate of chemical reactions Figure 2.16 Slide 2.34 Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

pH Measures relative concentration of hydrogen ions pH 7 = neutral pH below 7 = acidic pH above 7 = basic Buffers Chemicals that can regulate pH change Figure 2.11 Slide 2.25 Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings