University:
Eastern Kentucky University
Course:
BIO 100 | Introductory Biology
Academic year:

2022
Views:

441

Pages:

10
Author:

rehinhea0c

APES Exam Review Unit 1 Organism Interactions Predator/Prey Predator hunts/kills prey Commensalis m Bromeliads take up space on tree to get sun/rain. Cause no harm Parasitism One organism feeds off another harming it, but not intending to Organism Interactions continued... Mutualism - both organisms benefit. Nile Crocodile gets leeches removed by Egyption Plover. Egyption Plover gets Interspecific Competition Members of different species compete for same resource. Intraspecific Competition Members of the same species compete for resources - in the Typical graph depicting Predator Prey Interaction. If Predators ↑, Prey will ↓ and this will cause Predator to ↓ Resource Partitioning - evolving to use different resources, occupy different habitat or feeding at a different time to reduce direct Biomes Click on the Picture below for information on each biome. Click on the Checkmark below to test your knowledge of Temperature/Precipit ation expected in different locations around the world. Biogeochemical Cycles Key Points Energy - Flows from the sun through producers to primary consumers to secondary consumers and so on. Matter - is recycled and has many paths through an ecosystem via different processes and organisms. The Nitrogen Cycle Explained Energy and the 10% Rule Trophic levels - Producers must be present before other organisms can survive. The Sun - the origin of all ecostem energy on Earth 10% Rule - only 10% of energy consumed will move to the next trophic level. All other energy is converted to (mainly) heat. Energy Concepts - Thermodynamics 1st Law of Thermodynamics Conservation of Energy Energy cannot be created or destroyed. The universe has a set amount of energy. 2nd Law of Thermodynamics Disorder or Entropy. Every conversion of energy results in more entropy in the universe.. Implications: organisms are highly organized and require a constant influx of energy to maintain the organization. In return, they release large amounts of energy back to the environment. Source: https://www.khanacademy.org/science/biology/energy-and-enzymes/the-laws-of-thermodynamics/a/the-laws-of-thermodynamics Productivity in Ecoysytems Gross Primary Productivity (GPP) = Amount of energy to produce Carbon biomass (sugars) during photosynthesis by Net Primary Productivity primary producers GPP minus the Carbon (producers) biomass used in respiration. In other words, the plants photosynthesize and make sugars, but have to use some of them for