What is the likely result if a keystone species is removed from a stable ecosystem?

The ecosystem may become unstable

Immediate extinction of all species

Compare the amount of energy available to primary consumers and secondary consumers in a food web.

Primary consumers have more energy available than secondary consumers.

Secondary consumers have more energy available than primary consumers.

Both have the same amount of energy available.

Explain why anaerobic respiration produces less energy than aerobic respiration.

Anaerobic respiration does not fully break down glucose.

Anaerobic respiration uses more oxygen.

Anaerobic respiration occurs in plants only.

Anaerobic respiration uses sunlight.

Describe how photosynthesis and cellular respiration are connected in the carbon cycle.

Photosynthesis absorbs carbon dioxide, and cellular respiration releases it.

Photosynthesis releases carbon dioxide, and cellular respiration absorbs it.

Both processes absorb carbon dioxide.

Both processes release carbon dioxide.

A city wants to reduce its carbon footprint. Which strategy would be most effective?

Plant more trees in urban areas

Given evidence of increased atmospheric carbon dioxide, construct an explanation for how this might affect the cycling of matter and flow of energy in ecosystems.

Increased CO $$_2$$ can enhance photosynthesis, potentially increasing energy flow, but may also disrupt ecosystem balance.

Increased CO $$_2$$ will decrease plant growth and reduce energy flow.

Increased CO $$_2$$ has no effect on ecosystems.

Increased CO $$_2$$ only affects animal respiration.

A scientist collects data showing a decrease in the number of top predators in an ecosystem. Use reasoning to predict the possible impact on the cycling of matter and flow of energy.

There may be an increase in herbivore populations, leading to overconsumption of producers and disruption of energy flow.

The cycling of matter and energy will remain unchanged.

The number of producers will increase.

The ecosystem will become more stable.

Develop a model to illustrate how carbon moves between the biosphere, atmosphere, hydrosphere, and geosphere during photosynthesis and cellular respiration.

Carbon cycles between all four spheres through processes like photosynthesis (atmosphere to biosphere) and respiration (biosphere to atmosphere), as well as through water and soil.

Carbon only moves from the atmosphere to the biosphere.

Carbon stays only in the geosphere.

Carbon is not cycled in ecosystems.

Evaluate the effectiveness of creating wildlife corridors as a solution to reduce the impacts of human activities on biodiversity.

Wildlife corridors can help maintain genetic diversity and allow species to migrate, reducing negative impacts of habitat fragmentation.

Wildlife corridors have no effect on biodiversity.

Wildlife corridors increase habitat destruction.

Wildlife corridors only benefit plants.

Biology Regents Review #3

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Science

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9th Grade

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HS-LS2-4, HS-LS2-3, HS-LS2-5

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Denise Fanelli

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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Biology Regents Review #3

20 questions

Which process in cells produces energy in the presence of oxygen?

What is the main source of energy for most ecosystems on Earth?

Which process removes carbon dioxide from the atmosphere?

What term describes a stable community of organisms where populations remain relatively constant over time?

Which of the following is a human activity that negatively impacts biodiversity?

Which of the following best describes anaerobic conditions?

Which sphere is directly involved in the cycling of carbon through photosynthesis?

What is the likely result if a keystone species is removed from a stable ecosystem?

Which of the following is an example of a solution to reduce the impact of human activities on the environment?

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