Date post: | 27-Jun-2015 |
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BIOLOGY as the study of LIFE
WHAT IS BIOLOGY?
What are the CHARACTERISTICS OF LIFE
CellGenetic materialEnergy useHomeostasisGrowth and developmentReproductionResponse to environmentEvolution
CELLS
All living things are composed of one or more cells Except the virus, why?
ENERGY USE
All organisms use energyThe creation and use of energy is called
metabolism Anabolism, catabolism
HOMEOSTASIS
Ability to maintain a stable internal environment to remain alive Give examples that should be maintained to be alive.
GROWTH
Growth and change is present in organisms and these lead to their development
REPRODUCTION
The mechanism of organisms to maintain the proliferation of their species Asexual sexual
Genetic Material
All living things are made up of a kind of genetic material
Response to stimuli
Living organisms tend to react to certain factors that originate from their environment Tropism- movement towards/away w/o complete
motility Taxis- movement towards/away with complete motility Kinesis- non-directional response to stimuli
Evolution
The driver of speciationIs an emergent property of population
THEMES OF BIOLOGY
Emergent propertiesThe cellHeritable informationStructure to function relationshipInteraction with the EnvironmentRegulation (homeostasis)Unity and diversityScientific inquiryScience, Technology and Society
Emergent Property
Recall: HBO
Structure to function relationship
The role of a particular part or structure is determined through its form Structure fits the function Plays a role in determining the role of an organism in
the environment
Unity and diversity
Diversity is the sum of all the variety of all organisms in the biosphere
The varied organisms play a role (niche) in the stabilization of the whole system
Scientific Inquiry and Sci, Tech and Society
The scientific method is a tool in creating answers to the problems inquired by man in their environment