Cells and Ecosystem Interactions Quiz

Join Kai, Avery, and Harper on a thrilling investigation to uncover the mysteries of pond water! How can they prove that their sample is teeming with living organisms made of cells?

• Measure the temperature of the water.

• Observe the sample under a microscope to identify cells.

• Test the pH level of the water.

• Check the color of the water.

Answer explanation

Observing the sample under a microscope allows you to identify cells, which is direct evidence of living organisms. Other options do not provide specific evidence of cellular life.

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DOK Level 3: Strategic Thinking

Imagine you're an ecologist like Henry, and a new predator has just moved into the ecosystem. How might this shake things up among the organisms living there?

• The new predator will have no effect on the ecosystem.

• The new predator will only affect the prey it directly hunts.

• The new predator could disrupt existing food chains and lead to changes in population sizes of various species.

• The new predator will cause all other predators to leave the ecosystem.

Answer explanation

The introduction of a new predator can disrupt existing food chains by altering the dynamics between predators and prey, potentially leading to population size changes in various species, not just those directly hunted.

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DOK Level 3: Strategic Thinking

Imagine you're a tiny explorer like Ava, venturing through the mysterious world of a cell. How does the cell membrane contribute to the cell's overall function?

• The cell membrane acts as a rigid structure that supports the cell.

• The cell membrane controls the movement of substances in and out of the cell, maintaining homeostasis.

• The cell membrane is responsible for producing energy for the cell.

• The cell membrane stores genetic information.

Answer explanation

The cell membrane is crucial for controlling the movement of substances, ensuring that the cell maintains homeostasis. This selective permeability allows the cell to regulate its internal environment effectively.

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DOK Level 3: Strategic Thinking

Imagine you're in a magical forest with Lily, Abigail, and James. Can you help them understand how matter cycles and energy flows in this enchanted ecosystem? Which of the following best represents this process?

• Energy flows from the sun to plants, then to herbivores, and finally to carnivores, while matter cycles through decomposition.

• Energy is created by plants and then destroyed by animals.

• Matter is used up by plants and animals and does not cycle.

• Energy flows from animals to plants, and matter is lost from the ecosystem.

Answer explanation

The correct choice accurately describes the flow of energy from the sun to plants, then to herbivores and carnivores, while matter cycles through decomposition, highlighting the interconnectedness of energy flow and matter cycling in a forest ecosystem.

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DOK Level 3: Strategic Thinking

Imagine you're a detective like Charlotte or Samuel, tasked with uncovering the mystery of a tissue sample. How would you prove that this tissue is made up of a variety of different cell types?

• Use a magnifying glass to look at the tissue.

• Use a microscope to observe and identify different cell types within the tissue.

• Measure the weight of the tissue.

• Test the tissue for the presence of water.

Answer explanation

Using a microscope allows for detailed observation of the tissue, enabling the identification of various cell types, which is essential for demonstrating the tissue's cellular diversity.

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DOK Level 3: Strategic Thinking

Imagine you're in a vibrant ecosystem with Grace, Noah, and Mia. How might a sudden drop in the birth rate of a prey species, like rabbits, affect the population of their predators, such as foxes?

• The predator population will increase due to more available food.

• The predator population will decrease due to less available food.

• The predator population will remain unchanged.

• The predator population will become extinct.

Answer explanation

A decrease in the birth rate of a prey species leads to less available food for predators. Consequently, the predator population will decrease due to insufficient resources to sustain their numbers.

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DOK Level 3: Strategic Thinking

Hey science explorers! Imagine you're on a mission with Aiden and Abigail to uncover the secrets of the cell's powerhouse. Can you develop a model to describe how mitochondria contribute to the function of a cell as a whole?

• Mitochondria store genetic information for the cell.

• Mitochondria produce energy for the cell through cellular respiration.

• Mitochondria control the movement of substances in and out of the cell.

• Mitochondria are responsible for cell division.

Answer explanation

Mitochondria are known as the powerhouse of the cell, as they produce energy through cellular respiration. This energy is essential for various cellular functions, making this choice the correct answer.

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DOK Level 3: Strategic Thinking

Imagine you're a marine explorer like Oliver or Zoe, diving into the ocean's depths. Can you unravel the mystery of how matter cycles and energy flows in this underwater world? Which of the following best represents this process?

• Energy flows from the sun to algae, then to small fish, and finally to larger fish, while matter cycles through decomposition.

• Energy is created by fish and then destroyed by algae.

• Matter is used up by algae and fish and does not cycle.

• Energy flows from larger fish to small fish, and matter is lost from the ecosystem.

Answer explanation

The correct choice illustrates the flow of energy from the sun to producers (algae), then to consumers (small and larger fish), while matter cycles through decomposition, highlighting the interconnectedness of energy flow and matter cycling in marine ecosystems.

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DOK Level 3: Strategic Thinking

Avery and Priya are on a mission to prove that a mysterious sample of plant tissue is made of cells. What exciting approach should they take?

• Measure the height of the plant.

• Use a microscope to observe the plant tissue and identify cell structures.

• Test the plant tissue for chlorophyll content.

• Check the color of the plant tissue.

Answer explanation

Using a microscope allows for direct observation of plant tissue at the cellular level, providing clear evidence of cell structures, which is essential for confirming that the tissue is made of cells.

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DOK Level 3: Strategic Thinking

Imagine you're in a magical forest where David, Emma, and Sophia are observing the ecosystem. Suddenly, they notice an increase in the death rate of the mystical predator species, the Shadow Panthers. How might this affect the population of the shimmering prey, the Glimmering Deer?

• The Glimmering Deer population will decrease due to more Shadow Panthers.

• The Glimmering Deer population will increase due to fewer Shadow Panthers.

• The Glimmering Deer population will remain unchanged.

• The Glimmering Deer population will become extinct.

Answer explanation

An increase in the death rate of a predator species means there are fewer predators in the ecosystem. This reduction allows the prey population to thrive and increase, as there is less predation pressure on them.

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DOK Level 3: Strategic Thinking