At Home: Sem 1 Final Review Biology

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What is a dependent variable (DV) in an experiment?

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The dependent variable (DV) is the variable that is measured or tested in an experiment. It is affected by changes in the independent variable.

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What is an independent variable (IV) in an experiment?

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The independent variable (IV) is the variable that is changed or controlled in an experiment to test its effects on the dependent variable.

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What is population growth?

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Population growth refers to the increase in the number of individuals in a population, often influenced by factors such as birth rates, death rates, immigration, and emigration.

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What are the characteristics of all living things?

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All living things are made of cells, contain a genetic code, and have the ability to grow and develop.

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What is an ecosystem?

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An ecosystem is a community of living organisms interacting with their physical environment, including both biotic (living) and abiotic (non-living) components.

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What is carrying capacity?

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Carrying capacity is the maximum number of individuals of a particular species that an environment can support sustainably.

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What is the role of top-level predators in an ecosystem?

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Top-level predators help maintain the balance of ecosystems by controlling the populations of other species, which can prevent overpopulation and depletion of resources.

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What is the significance of genetic diversity in a population?

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Genetic diversity is important for the survival of a population as it increases resilience to diseases, environmental changes, and other threats.

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What is the difference between biotic and abiotic factors?

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Biotic factors are the living components of an ecosystem (e.g., plants, animals), while abiotic factors are the non-living components (e.g., water, soil, climate).

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What is an example of a limiting factor in population growth?

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Limiting factors can include food availability, water supply, habitat space, and predation, which can restrict the growth of a population.