Homeostasis Interim Review

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in external conditions.

Front

What is the significance of the 10% rule in energy transfer?

Back

The 10% rule states that only about 10% of the energy from one trophic level is transferred to the next level in an ecosystem, while the rest is lost as heat.

Front

Define hypertonic solution.

Back

A hypertonic solution is one that has a higher concentration of solutes compared to another solution, causing cells to lose water and shrink.

Front

What are abiotic components of an ecosystem?

Back

Abiotic components are the non-living physical and chemical elements in the environment, such as water, soil, minerals, and sunlight.

Front

How does ocean acidification impact marine life?

Back

Ocean acidification lowers the pH of ocean water, which can harm marine organisms, particularly those with calcium carbonate shells, disrupting the food web.

Front

What is an independent variable in an experiment?

Back

The independent variable is the factor that an experimenter changes intentionally to observe its effect on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

Explain the concept of trophic levels.

Back

Trophic levels represent the hierarchical levels in an ecosystem, where organisms are classified based on their source of energy: producers, primary consumers, secondary consumers, and so on.

Front

What is the role of producers in an ecosystem?

Back

Producers, such as plants and algae, convert sunlight into energy through photosynthesis, forming the base of the food web.

Front

Define isotonic solution.

Back

An isotonic solution has an equal concentration of solutes compared to another solution, resulting in no net movement of water into or out of cells.