How Does Energy Move Between Organisms

What process converts radiant energy inot chemcial energy?

• respiration

• phototropism

• combustion

• photosynthesis

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NGSS.MS-LS1-6

Muscle cells in athletes often have more mitochondria than muscle cells in nonathletes. What can be inferred from this observation?

• Muscle cells in athletes reproduce less frequently than muscle cells of nonathletes.

• Muscle cells in athletes have a greater demand for energy than muscle cells of nonathletes.

• Muscle cells in athletes have a smaller supply of cell proteins than muscle cells of nonathletes.

• Muscle cells in athletes have nuclei containing more DNA than nuclei in muscle cells of nonathletes.

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NGSS.MS-LS1-3

NGSS.MS-LS1-5

What do the arrows of a food web represent?

• the direction of energy flow

• who eats who in the food chain

• the organisms that live together

• the distance between organisms

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NGSS.MS-LS2-2

NGSS.MS-LS2-3

How much energy passes from one level of the food chain to the next?

• 90%

• 1%

• 10%

• 70%

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens to the rest of the energy that doesn't pass on to the next trophic level?

• it is destroyed

• it is only lost as heat

• it disappears

• it is either stored by the organisms or lost as heat

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

What might directly cause an increase in the number of hawks?

• an increase in the number of catfish

• a decrease in the number of catfish

• more plants

• a decrease in the number of beetles

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organism has the most energy in the diagram?

• frogs

• grass

• bird

• grasshopper

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organism has the least amount of energy available in the diagram?

• grasshopper

• frog

• grass

• bird

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NGSS.MS-LS2-3

What is the primary source of energy for most ecosystems?

• A) The Sun

• B) The Moon

• C) The Earth's core

• D) Ocean currents

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

In a food chain, which organism is most likely to be a primary consumer?

• A) Grass

• B) Rabbit

• C) Fox

• D) Eagle