Unit 3: Matter and Energy in Living Systems

The main source of energy for all life comes from ____.

• the Earth
• the moon
• the sun
• the food we eat/make

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Most plants appear green because chlorophyll

• absorbs green light.
• absorbs violet light.
• reflects green light.
• does not absorb violet light.

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NGSS.MS-LS1-6

The reactants of photosynthesis are

• sugar and water.
• sugar and oxygen.
• carbon dioxide and water.
• carbon dioxide and oxygen.

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NGSS.MS-LS1-6

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Which of the following is the correct equation for PHOTOSYNTHESIS?

(Assume that the arrow also includes light energy and enzymes.)

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆

• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂

• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆

• C₆H₁₂O₆+ 6O₂ ---> 6H₂O + 6CO₂

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NGSS.MS-LS1-6

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Which gas is removed from the atmosphere during photosynthesis?

• hydrogen
• oxygen
• nitrogen
• carbon dioxide

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NGSS.MS-LS1-6

What is the function of NADPH and ATP?

• They absorb light
• They power the light-dependent reactions
• They are light-reflecting pigments
• They are short term energy carriers

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Which of the following is NOT a product of the light-dependent reactions?

• ATP
• NADPH
• Oxygen
• Glucose

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NGSS.MS-LS1-6

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Which substance from the light-dependent reactions of photosynthesis is a source of energy for the light-independent reactions?

• ADP
• H2O
• NADPH
• pyruvic acid

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NGSS.MS-LS1-6

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Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis? 

• The light-dependent stage
• The light-independent stage (The Calvin Cycle)
• The electron transport chain
• ATP formation

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NGSS.MS-LS1-6

What 2 things does a plant make during photosynthesis?

• oxygen, glucose
• glucose, carbon dioxide
• useable energy, glucose
• oxygen, carbon dioxide

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