Homeostasis
What is organism homeostasis?
a self-regulating process by which an organism can maintain internal stability while adjusting to changing external conditions.
What are Biotic factors that may influence a change in a population?
Predation, enough food to eat, bacterial infections
What is "the largest population that an area can support" called?
Carrying Capacity
T/F Producers eat primary consumers
False
What is ecosystem homeostasis?
Equilibrium, or a balance of the organisms in an ecosystem. This means the populations of species in the ecosystem are relatively stable.
What are Abiotic factors that may influence a change in a population?
fires, pollution, ocean acidity, sunlight, viruses
What is "the hiding of something as a result of its appearance"?
Camouflage
T/F Apex predators are the top of the food chain.
True
If a population reaches carrying capacity is it in homeostasis?
Yes - Why?
How does predation affect allelle frequency in a population? HINT - use rock pocket mice as an example
predation will reduce the allelle frequency of the prey that are eaten and increase the allelle frequency of the organisms that survive predation
What is "a characteristic that an organism can pass on to its offspring through its genes"?
Trait
T/F Carnivores eat plants and animals.
False.
If a sea urchin loses it's ability to make it's shell, will it be able to maintain homeostasis?
No - Why?
In the sea urchin lab, how did the sea otters change the color allelle frequency of the sea urchins?
The sea otters ate the large sea urchins. The large sea urchins happened to be dark. As a result more of the medium and light sea urchins survived.
What is "the ability of an organism to survive and reproduce in its environment"?
Fitness
T/F An adaptation can help an organism survive and reproduce in its environment.
True
If there is 1 kelp plant, 300 sea urchins, 30 sea otters, and 1 orca...is this ecosystem maintaining homeostasis?
No - Why?
As a result of the sea urchin lab, which allelle color will be more frequent in the next generation?
The light and/or medium color allele(s) will be more frequent in the next generation. Why?
What is "a measure of how common a certain allele is in the population"?
Allelle Frequency
There are 2 beetles with 2 different allele colors on a brown tree.
If a bird eats the beetles for the green allele color because it can be easily seen. What will happen to the frequency of the brown allelle color in the beetle population?
The frequency of the brown allele color will increase. Why?