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Chapter 1

Exploring Life

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
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