Definitions
How We Define Life?
- Has at least one cell
- Grows and Develops
- Uses Energy
- Reproduces
How we define an ecosystem?
All living and nonliving things in an environment
What are the three examples of symbiosis?
-Parasitism
-Mutualism
-Commensalism
What are some of the earth's main cycles?
- Water
- Carbon
- Nitrogen
- Phosphorus
What is BioDiversity?
The total Variety of Organisms in the Biosphere
What is a food chain?
A Diagram showing energy transfer between organisms
What are the four main macromolecules?
-Lipids
-Carbohydrates
-Proteins
-Nucleic Acids
Why is the carbon cycle important?
- Carbon is one of the most common elements in all living things
What is the Biosphere?
The Earth
How is energy lost in the food pyramid?
Energy is lost as heat
What is an organism?
An individual that carries out life processes
What are 3 ways carbon is released into the atmosphere?
-Cellular Respiration
-Burning Fossil Fuels
-When organisms die and decay
What does DNA stand for?
Deoxyribonucleic Acid
What is Carrying Capacity?
The maximum population size that can be supported in a particular area without destroying the habitat
What are some of the functions of proteins?
-Maintains shape of cells
-Makes up majority of muscle tissue
-Contains enzymes that speed up chemical processes
-Some proteins are antibodies
What are three of the main steps in the water cycle?
-Evaporation
-Condensation
-Precipitation
What is the difference between a habitat and a niche?
A habitat is an individual's environment .
A niche is an individual's role in its environment.
Limiting factors determine carrying capacity. What are 4 limiting factors?
-Weather
-Human Activity
-Predators
-Elevation
-Lack of shelter or space
-Disease
What percentage of the human body is water?
50-75 Percent
About 75%