Chapter 4 Lesson 2 Quiz Review - Overview of Photosynthesis

During photosynthesis, cells capture the energy of sunlight using​ ​ (a)   which is a type of ​ (b)   . Photosynthesis also relies on a compound called ​ (c)   which is an electron ​ (d)   that accepts and transfers high-energy electrons.

• chlorophyll
• Pigment
• NADP
• carrier
• glucose, enzyme, ATP, receptor
• water, protein, FAD, transporter
• oxygen, carbohydrate, NADH, binder

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During photosynthesis, carbon dioxide and ​ (a)   are converted through a series of reactions into two products: high-energy ​ (b)   and ​ (c)  

• water
• sugars
• oxygen
• nitrogen, proteins, carbon monoxide
• sulfur, fats, hydrogen
• ammonia, starch, methane

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Sandra wants to modify the diagram to include chlorophyll. Which would be the

most useful strategy?

• Add representations of chlorophyll molecules inside the stroma.

• Add representations of chlorophyll molecules on the outer membrane.

• Group two or more grana together, and label them as chlorophyll.

• Add an enlarged illustration of a thylakoid, and represent chlorophyll

  molecules in the thylakoid membrane.

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Vernon is using the diagram shown below to develop a model of photosynthesis. The letters A, B, and C each represent a reactant or product of the process.

Should water (H 2 O) be included in the model as a reactant or product? If

so, how should it be included?

• Yes, as reactant A.

• Yes, as product B.

• Yes, as reactant C.

• No, it should not be Included.

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Vernon is using the diagram shown below to develop a model of photosynthesis. The letters A, B, and C each represent a reactant or product of the process.

What is the role of compound C?

• a reactant that provides the energy for assembling sugars

• a reactant that provides the carbon and hydrogen for sugars

• a reactant that provides the carbon and oxygen for sugars

• a product that forms along with sugars

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Vernon is using the diagram shown below to develop a model of photosynthesis. The letters A, B, and C each represent a reactant or product of the process.

Vernon wonders whether NADPH and ATP should be classified as

reactants or as products of photosynthesis. How should these compounds beclassified?

• as reactants, because they are used up by photosynthesis

• as products, because they are generated by photosynthesis

• as either reactants or products, depending on the rate that photosynthesis

  occurs

• as neither reactant nor product, because they are recycled instead of made

  or used up

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What best describes the relationship between the two sets of reactions of

photosynthesis, which are the light-dependent reactions and the light-

independent reactions?

• Each set produces sugars, and by working together they produce more

  sugars than they would produce separately.

• Each set produces half of a sugar molecule, and later the two halves are

  joined together.

• Only the light-dependent reactions produce sugars, but they depend on

  products of the light-independent reactions.

• Only the light-independent reactions produce sugars, but they depend on

  products of the light-dependent reactions.

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The chemical formula for glucose, a simple sugar, is C6H12O6 . When aglucose molecule is assembled during photosynthesis, the process takes up 12 hydrogen ions from the stroma of the chloroplast. What process adds 12 hydrogen ions to the chloroplast?

• 6 water molecules splitting apart during the light-dependent reactions

• 12 water molecules splitting apart during the light-dependent reactions

• 12 water molecules splitting apart during the light-independent reactions

• other sugar molecules reacting with oxygen in the chloroplast

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🌱Photosynthesis 🌱

Carbon dioxide ​ (a)   + Water ​ (b)   + ☼ → Glucose ​ (c)   + Oxygen gas ​ (d)  

• (CO₂)
• (H₂O)
• (C₆H₁₂O₆)
• (O₂)

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What is the primary purpose of photosynthesis in plants?

• To produce oxygen for animals

• To convert light energy into chemical energy

• To absorb carbon dioxide from the atmosphere

• To create heat energy for the plant

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