Biology Sem 1 Review

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What is a population in biology?

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A population is a group of individuals of the same species living in a specific area at the same time.

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What is parasitism?

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Parasitism is a type of symbiotic relationship where one species benefits at the expense of another, harming the host.

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What is the difference between active and passive transport?

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Active transport requires energy (ATP) to move substances against their concentration gradient, while passive transport does not require energy and moves substances along their concentration gradient.

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What is a secondary consumer?

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A secondary consumer is an organism that eats primary consumers (herbivores) in a food web.

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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.

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What is mutualism?

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Mutualism is a symbiotic relationship where both species benefit from the interaction.

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What is commensalism?

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Commensalism is a type of symbiotic relationship where one species benefits and the other is neither helped nor harmed.

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What is a food web?

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A food web is a complex network of feeding relationships among various organisms in an ecosystem.

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What is the role of producers in an ecosystem?

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

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What is the biosphere?

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The biosphere is the global sum of all ecosystems, representing the zone of life on Earth.