CIA 2: Cell Energy and Ecology Review

Front

What is a food web?

Back

A food web is a complex network of feeding relationships among various organisms in an ecosystem, showing how energy and nutrients flow through different trophic levels.

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What role do decomposers play in an ecosystem?

Back

Decomposers, such as fungi and bacteria, break down dead organic matter, recycling nutrients back into the soil and making them available for producers.

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What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including fixation by bacteria, uptake by plants, and return to the atmosphere.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water.

Front

What is the Kreb's Cycle?

Back

The Kreb's Cycle, also known as the citric acid cycle, is the second step of cellular respiration where acetyl-CoA is oxidized to produce ATP, NADH, and FADH2.

Front

What is a tertiary consumer?

Back

A tertiary consumer is an organism that eats secondary consumers in a food chain, typically at the top of the food web.

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What is the role of bacteria in the nitrogen cycle?

Back

Bacteria fix nitrogen from the atmosphere into a usable form for plants, and also decompose organic matter, returning nitrogen to the soil.

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What is the difference between a primary consumer and a secondary consumer?

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Primary consumers eat producers (plants), while secondary consumers eat primary consumers.

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What is photosynthesis?

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What is the significance of the Calvin Cycle?

Back

The Calvin Cycle is the set of chemical reactions that take place in chloroplasts during photosynthesis, where carbon dioxide is converted into glucose.