The Science of Biology The study of living things.

Properties (or Characteristics) of Life: 1. Cellular organization 2. Order 3. Sensitivity 4. Growth, development, and reproduction. 5. Energy utilization. 6. Evolutionary adaptation 7. Homeostasis

Hierarchical Organization of the Biological World: 1. Cellular Level 2. Organismal Level 3. Populational Level Know Page 3

Fig. 1.2a(TE Art) CELLULAR LEVEL Atoms Molecule Macromolecule Organelle Cell Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Fig. 1.2a1(TE Art) Atoms Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Fig. 1.2a2(TE Art) Molecule Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Macromolecule Fig. 1.2a3(TE Art) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Fig. 1.2a4

Fig. 1.2a5

ORGANISMAL LEVEL Tissue Organ Organ system Organism Fig. 1.2b(TE Art) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Fig. 1.2b1

Fig. 1.2b2(TE Art) Organ Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Organ system Fig. 1.2b3(TE Art) Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Fig. 1.2b4

Fig. 1.2c

Fig. 1.2c1

Fig. 1.2c2

Fig. 1.2c3

Fig. 1.2c4

Emergent Properties At each higher level in the living hierarchy, novel properties emerge. They result from the way in which components interact, and often cannot be guessed just by looking at the parts themselves Example: one fish cell tells you very little about the whole fish