Food Chains & Food Webs

What is a food chain?

• A series of organisms each dependent on the next as a source of food

• A type of plant

• A chain made of food

• A cooking recipe

Answer explanation

A food chain is defined as a series of organisms where each one depends on the next for food. This highlights the interconnectedness of ecosystems, making the first answer choice the correct one.

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In a food web, a snake is most likely to be a ______.

• Producer

• Primary consumer

• Secondary consumer

• Decomposer

Answer explanation

A snake is a carnivore that typically eats primary consumers like rodents. Therefore, it fits the role of a secondary consumer in a food web, as it feeds on organisms that are primary consumers.

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What is the currency/useable energy in all cells in all life?

• DNA

• ATP

• RNA

• Glucose

Answer explanation

ATP (adenosine triphosphate) is the primary energy carrier in all living cells. It provides the energy needed for various cellular processes, making it the correct answer for the currency of energy in life.

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Cells require ______ to function.

• water

• energy

• oxygen

• carbon dioxide

Answer explanation

Cells require energy to perform various functions, such as growth, repair, and metabolism. While water, oxygen, and carbon dioxide are important for cellular processes, energy is the fundamental requirement for all cellular activities.

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Which of the following processes is directly involved in the production of ATP?

• Cell Transport

• Muscle Movement

• Cell Division

• Cell Respiration

Answer explanation

Cell respiration is the process that directly produces ATP through the breakdown of glucose and other molecules in the presence of oxygen, making it essential for energy production in cells.

Tags

NGSS.HS-LS1-7

What would happen to life on Earth without solar energy?

• Life would thrive

• No cell would be able to do 'work'

• There would be more energy

• Plants would grow faster.

Answer explanation

Without solar energy, photosynthesis would cease, leading to a collapse of food chains. Cells rely on energy from ATP, which is produced through processes that depend on solar energy, meaning no cell could perform essential functions.

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Solar energy is not chemical energy (ATP), which is the form cells need. True or False?

• True

• False

Answer explanation

True. Solar energy is a form of energy from the sun, while ATP (adenosine triphosphate) is a chemical energy carrier used by cells. They are different forms of energy, hence the statement is correct.

Tags

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What are the main components required for photosynthesis?

• Oxygen and Glucose

• Sunlight, Carbon Dioxide, and Water

• Nitrogen and Oxygen

• Glucose and Water

Answer explanation

Photosynthesis requires sunlight, carbon dioxide, and water to produce glucose and oxygen. The correct choice lists these essential components, while the other options do not include all necessary elements.

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In photosynthesis, carbon dioxide (CO2) is converted into ______ using sunlight.

• Oxygen

• Water

• Glucose

• Nitrogen

Answer explanation

In photosynthesis, plants use sunlight to convert carbon dioxide (CO2) into glucose, a type of sugar that serves as energy. Oxygen is released as a byproduct, but the main product from CO2 is glucose.

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Which of the following organisms is an example of a producer?

• Fungi

• Animals

• Plants

• Viruses

Answer explanation

Plants are producers because they can make their own food through photosynthesis, converting sunlight into energy. In contrast, fungi, animals, and viruses cannot produce their own food and rely on other organisms for energy.

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