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Chapter 1
Biology: Exploring Life
March 7 (Thurs), 2014
Chapter 1: Big Ideas
Themes in the Studyof Biology
The Processof Science
Biology andEveryday Life
Evolution, the CoreTheme of Biology
THEMES IN THE STUDY OF BIOLOGY
© 2012 Pearson Education, Inc.
(1) Order
(2) Reproduction
(3) Growth and development
(4) Energy processing
(7) Evolutionary adaptation
(6) Regulation
(5) Response to the environment
sunbathing
Camouflages
Insectivorous plant
Figure 1.1 Some important properties of life
1.1 All forms of life share common properties
Biology is the scientific study of life.
Properties of life include
Order—the highly ordered structure that typifies life
Reproduction—the ability of organisms to reproduce their own kind
Growth and development—consistent growth and development controlled by inherited DNA
Energy processing—the use of chemical energy to power an organism’s activities and chemical reactions
© 2012 Pearson Education, Inc.
Response to the environment—an ability to respond to environmental stimuli
Regulation—an ability to control an organism’s internal environment within limits that sustain life
Evolutionary adaptation—adaptations evolve over many generations as individuals with traits best suited to their environments have greater reproductive success and pass their traits to offspring
© 2012 Pearson Education, Inc.
1.2 In life’s hierarchy of organization
Biosphere
Madagascar
Ecosystem:Forest inMadagascar
Community:All organisms inthe forest
Population:Group of ring-tailedlemurs
Organism:Ring-tailed lemur
All of the environments on Earth that support life
Figure 1.2 Life’s hierarchy of organization
Organism:Ring-tailed lemur
Organ system:Nervous system
Organ:Brain
Tissue:Nervous tissue
Nerve
Spinal cord
Brain
Organelle:Nucleus
Cell:Nerve cell
Nucleus
Atom
Molecule:DNA
Biosphere
Madagascar
Ecosystem:Forest inMadagascar
Community:All organisms inthe forest
Population:Group of ring-tailedlemurs
Organism:Ring-tailed le
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