the study of life. scientists have named and cataloged around 1.3 million species it is estimated...
TRANSCRIPT
The study of life
Biology
What do biologist do?
Study the diversity of life
Scientists have named and cataloged around 1.3 million species
It is estimated that there are about 8.7 million species on the planet
133 new animal species discovered last year
Himantura tutul species of Leopard-skin Whiprays - found in the Indio-Pacific region
Lavasoa dwarf lemur – found in the forests of southern Madagascar
Ctenotus ora or coastal plains skink – found in Western Australia
Malaria Parasite that destroys red blood cells in the
liver Each day malaria claims the lives of 3,000
children in Africa – one every 30 seconds Labs with 3,000 tray each with over 7,000
mosquito larvae which are sorted by gender so males can be sterilized
Extract from the bark of an Enantia chlorantha tree growing in a Cameroonian rain forest is used as a traditional remedy for the raging fevers
Research Disease
Influenced by bio-designs
CamouflageArtificial limbsAircraft wings
Develop technologiesApplication of scientific knowledge to solve human needs and to extend human capabilities
Solve problem of increase in human population
Need crops to produce greater yields, with stand disease and parasites and create the ability to grow crops in areas where they could not
Research and genetic engineering
Improve Agriculture
Problem: mass increase in human population and over use of resources
Many animals and plants endanger of extinctionEcosystems being destroyed and contaminatedAlso has negative affect on human population
Preserve the Environment
Rainforest Destruction
Compost Bin
Ozone
Reduction
Recycl
e
Characteristics of Life
Made up of one or more cellsDisplays organizationGrows and DevelopsReproductionResponds to stimulusRequires energyMaintains homeostasisAdapts over time
Characteristics of Life
Cells –basic unit of structure and function
The “Building Blocks” of life
Some organisms are
composed of a single
cell
Other organisms are
composed of many
cells
Displays Organization
Begins with atoms and molecules and increases in complexity
Growth – Increase in mass
Development – Results in different abilities
Grows and Develops
Reproduce and pass along traits from one generation to the next
Reproduces
Reactions to internal and external stimuli
Response to Stimuli
Energy is required for all life processesOrganisms must take in food or make their
own food
Requires Energy
All organisms keep internal conditions stable through the process of homeostasis
Examples: temperature, pH, salinity
Maintains Homeostasis
Favorable characteristics are selected and passed on to offspring
Adaptations are inherited changes that occur over time that help the species survive
Adaptation Over Time
