Ecology & Energy Flow
What is the difference between biotic and abiotic factors?
Biotic factors are living, abiotic are not
What is the correct formula for photosynthesis?
CO₂ + H₂O → O₂ + C₆H₁₂O₆
Give an example of natural selection occurring
A giraffe with a longer neck survives better and reproduces
What is the end result of meiosis?
4 haploid genetically different cells
What is biological magnification?
oxins increase at higher trophic levels
Which level of ecological organization comes directly before "ecosystem"?
Community
What do plants need to carry out photosynthesis?
Carbon dioxide, water, sunlight
What kind of selection favors the average trait?
Stabilizing
What process increases genetic diversity during meiosis?
Crossing over
What is one reason invasive species are dangerous?
They outcompete native species and have no natural predators
What is the 10% rule in energy transfer?
10% of energy is passed to the next trophic level. THE REST IS LOST AS HEAT!
Which is a difference between aerobic and anaerobic respiration?
Anaerobic occurs with no oxygen
What pattern shows both extremes favored over the average?
Dsiruptive
Which process describes a few individuals founding a new population?
Founder effect
What is an example of a positive human impact?
Reintroducing keystone species
Ex. bringing the wolves back to Yellowstone
Give an example of a producer
Any plants
Why do muscles get sore after intense exercise?
Lactic acid builds up from anaerobic respiration
Which type of evidence shows common ancestry?
DNA similarities
What is gene flow?
Alleles moving between populations
What is carrying capacity?
Maximum population an ecosystem can support
Decomposers break down all dead matter while scavengers only eat dead animals
How are photosynthesis and cellular respiration related?
The products of photosynthesis are used as the reactants of cellular respiration
What causes antibiotic resistance in bacteria?
Overuse of antibiotics, selecting for resistant bacteria
Give an example of the bottleneck effect
Sudden population reduction by disaster
What is a density-independent limiting factor?
A natural disaster