Matter and Energy in the Ecosystem

What is the name of the process where plants and other producers use sunlight to convert carbon dioxide and water to ESM's and oxygen?

• Energy Storage Molecules

• Photosynthesis

• Cellular Respiration

• Heterotrophs

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organisms undergo photosynthesis?

• Producers

• Consumers

• Decomposers

• All of the above

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NGSS.MS-LS1-6

Algae are plantlike organisms that live in the water. These algae have been in sunlight for several hours now. What can the algae do because they are in sunlight? What does this mean for the number of energy storage molecules in the algae?

• take in carbon from the air. The carbon is used to make energy storage molecules.

• take in carbon from the air. The carbon is used to break down energy storage molecules.

• give off carbon to the air. Giving off carbon allows them to make energy storage molecules.

• give off carbon to the air. Giving off carbon uses up energy storage molecules.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

These goats are eating grass on a sunny day. What is happening to the carbon in the air around the living things on the mountain? Is carbon moving into the air, moving out of the air, or both?

• Carbon is only moving into the air; it is not moving out of the air.

• Carbon is moving into the air and out of the air at the same time.

• Carbon is not moving into the air; it is only moving out of the air.

• With this information, there is no way to know for sure.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A scientist built a model ecosystem that contains air, plants, and animals that eat those plants. It is sealed so no material can get in or out, but the glass sides allow light to get in. The model ecosystem can also be covered to prevent light from entering.The amount of carbon in the air inside the model ecosystem started out high. Now the amount of carbon in the air is decreasing. Is the model ecosystem now in sunlight or is it covered? What is happening to the number of energy storage molecules in the plants and animals as a result?

• The model ecosystem is in sunlight, and there are fewer energy storage molecules in the plants and animals

• The model ecosystem is in sunlight, and there are more energy storage molecules in the plants and animals.

• The model ecosystem is covered so no light gets in, and there are fewer energy storage molecules in the plants and animals.

• The model ecosystem is covered so no light gets in, and there are more energy storage molecules in the plants and animals.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is one of the reactants for photosynthesis?

• glucose (sugar)

• carbon dioxide

• oxygen

• chlorophyll

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NGSS.MS-LS1-6

What is the opposite reaction of photosynthesis called?

• cellular respiration

• photosynthetic process

• fermentation

• non-photosynthesis

Tags

NGSS.MS-LS1-6

What is one of the 3 products of cellular respiration?

• sunlight

• oxygen

• carbon dioxide

• sugar (glucose)

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

The three things plants need are sunlight, water, and CO₂ for photosynthesis.

• True

• False

Tags

NGSS.MS-LS1-6

Which of the following is the correct equation for photosynthesis?

• CO₂ + H₂O + light ---> O₂ + Glucose

• CO₂ + Glucose + H₂O ---> O₂ + light

• CO₂ + O₂ + H₂O ---> light + Glucose

• O₂ + Glucose ---> CO₂ + light + H₂O

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7