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Chapter 1
Exploring Life
| Term | Definition |
|---|---|
| Biology | is the scientific study of life. |
| Properties of Life | include order, reproduction, growth and developemtn, energy processing, regulation, response to the environment, and evolutionary adaptation. |
| The cell | is the structural and functional unit of life. |
| domains | LIfe can be organized into three higher levels |
| Domains Bacteria and Archae | contain organisms with simple cells. |
| Domain Eukarya | includes various protists and the kingdoms of Fungi, plantar, and animalia |
| Emergent properties | result from the specific arrangement and interactions among component parts |
| Lifes hierarchy of life include | Biosphere--->Ecosystem--->Community--->Population---> Organism---> Organs and organ system---> tissues---> cell---> organelle---> molecule ---> atoms |
| The scientific approach involves | observations, hypotheses, predictions, tests of hypotheses via experiments or additional observations, and analysis of data. |
| scientific theory | broad in scope and supported by a large body of evidence. |
| independent variable | factor that is manipulated |
| dependent variable | measure used to judge the outcome of the experiment |
| control group | A controlled experiment compares an experimental group |
| Forming and testing hypotheses at the core of science. This endeavor is influenced by three spheres | exploration/ discovery, analysis and feedback from the scientific community, and societal benefits and outcomes. |
| Five Unifying themes in Biology include: | evolution, flow of information, structure and function, transfer and transformation of energy and matter, and interactions within and between systems. |
| Observations: | Heritable variations and overproducion of offspring |
| Inferences | Natural selection- unequal reproductive success leads to evolution of adaptation in population. |
| the transmission and use of information. | The processes of life all depend on |
| DNA | responsible for heredity and for programming the activities of a cell by providing the blueprint for proteins. |
| Information from the external and internal environment includes | the stimuli, signals, and pathways that regulate body processes and gene expression. |
| molecular level | the structure of a protein correlates with its function. |
| cellular level | the long extensions of nerve cells enable them to transmit impulses from your spinal cord to your toes. |
| Energy flows through an ecosystem in on direction | entering as sunlight, converted to chemical energy by producers, passed on to consumers, and exiting as heat. |
| Ecosystem are characterized by the cyclying of matter | from the atmosphere and soil, through producers, consumers, and decomposers, then back to the environment. |
Created by:
siani.mayes