1Ecology
Study of interactions between organisms and their environment
2Trophic Levels
Producer, Primary Consumer, Secondary Consumer, Tertiary Consumer
310% Rule
Only 10% of energy in one trophic is passed onto the next.
4Ecological Pyramids
Pyramid of Numbers
Pyramid of Energy
Pyramid of Biomass
5Food Chains
A series of steps in which organisms transfer energy by eating and being eaten
6Food Webs
Interconnected food chains that show feeding relationships in an ecosystem
7Abiotic vs Biotic
Abiotic - Non Living
Biotic - Living
8Symbiotic Relationships
Relationships with dependency on two organisms
93 Types of Symbiotic Relationships
Mutualism, Commensalism, Parasitism
10Parasitism
One benefits, other harmed; dog and tick
11Mutualism
Both benefit; bee and flower
12Commensalism
One benefits, other unaffected; whale and barnacles
13Levels of Organization
organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
14Survivorship Curves
Number of individuals surviving to each age for a group
15Three Types of Survivorship Curves
1,2,3
16Demography
Study of Population
17Population Dynamics
Changes in population through time and space
18Three Ways for Counting Population
Random Sampling
Mark & Recapture
Quadrant Sampling
19Random Sampling
Each member has an equal chance of inclusion
20Mark & Recapture
Capture small number, mark them and release. Catch another group, count # of marks.
21Quadrant Sampling
Organisms counted directly, then used to estimate rest of habitat.
22Species Diversity
Number of different species in biosphere.
23Species Richness
Number of species in a community
24Photosynthesis
Occurs only in plants
Plant makes glucose from light, carbon dioxide, and water
25What organelle hosts photosynthesis
Chloroplast
26Where in the plant does photosynthesis occur?
leaves
27Reactants and products of photosynthesis
Reactants: CO2 and H2O
Products: C6H12O6 (glucose) and O2
28Cellular Respiration
Cell turns glucose into energy
29Where does Cellular Respiration occur
Mitochondria
30Reactants and Products of Cellular Respiration
Reactants: C6H12O6 (glucose) 6O2
Products: 6CO2, 6H2O, and ATP
31Carbon Cycle
flow of carbon between atmosphere and earth
32States of Carbon Cycle
Photosynthesis, Cellular Respiration, Decomposition, Combustion
33Water Cycle
Evaporation, Condensation, Precipitation
34Cells
basic structural units of life (smallest too)
35Cell Wall
Prokaryotic cells, plant cells, outside plasma membrane, protection
36Cytoplasm
Jellylike material that surrounds organelles
37Ribosomes
Site of protein synthesis
38Nucleus
Control center of the cell
39Vacuoles
Saclike structures that store materials like water and proteins
40Lysosomes
Small organelles filled with enzymes
41Mitochondria
Powerhouse of the cell
42Golgi Bodies
Sort proteins and other substances and packages them
432 Cell Types
Prokaryotic and Eukaryotic