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