Biology Mid-Term Review

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What is combustion?

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Combustion is a chemical reaction that occurs when a substance reacts rapidly with oxygen, producing heat and light. It is often associated with burning.

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Why is it important to wash your hands after a lab experiment?

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Washing hands after a lab experiment is crucial to remove any chemicals, biological agents, or contaminants that may have come into contact with the skin, ensuring safety and hygiene.

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What is primary succession?

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Primary succession is the process of ecological change that occurs in an area where no soil exists, such as after a volcanic eruption or glacier retreat, leading to the establishment of a biological community.

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What is secondary succession?

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Secondary succession is the ecological process that occurs in an area where a disturbance has destroyed a community but left the soil intact, such as after a forest fire or flood.

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What safety equipment should be worn during a lab investigation?

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Safety goggles, gloves, and lab coats should be worn during lab investigations to protect against chemicals, heat, and glassware hazards.

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What is the role of competition in an ecosystem?

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Competition occurs when organisms vie for the same resources, such as food, water, or space, which can influence population dynamics and community structure.

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What is the difference between a food chain and a food web?

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A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains in an ecosystem.

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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 biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the diversity of species, genetic variation, and ecosystem diversity.

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What is the significance of photosynthesis?

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Photosynthesis is the process by which green plants and some other organisms convert light energy into chemical energy in the form of glucose, providing food and oxygen for life on Earth.