AP Bio U3 Photosynthesis

What is one function of the other pigments  besides chlorophyll, in the chloroplast?

• to block damaging wavelengths of light
• to absorb different wavelengths than the chloroplasts
• to provide different colors to the leaves
• to transfer energy to a separate photosystem beside the one using chlorophyll a and b.

What is the primary function of the light reactions of photosynthesis?

• To produce glucose
• To produce NADPH and ATP
• To use ATP
• To produce RuBP

What is the function of NADP+?

• It absorbs light
• It is an electron carrier
• It is a light-reflecting pigment
• It acts as long-term energy storage

Which of the following molecules is not needed for the Calvin Cycle?

• CO₂
• ATP
• NADPH
• H₂O

Green plants reflect ________ light.

• Red
• Green
• All
• Red and Violet

The light reactions occur in the ________ and the dark reactions take place in the ________.

• Chloroplast / thylakoid membrane
• stroma / thylakoid
• mesophyl / stomata
• thylakoid membrane / stroma

Where does the carbon come from that is used to form glucose?

• The soil
• CO₂ in the air
• From other carbohydrates
• Calvin Cycle

When oxygen is released as a result of photosynthesis, it is a direct by-product of

• reducing NADP+
• splitting water molecules
• chemiosmosis
• electron transfer in photosystem II and I

What is the primary function of the Calvin cycle?

• regenerate ATP for use in the light reactions of photosynthesis
• produce carbon dioxide for use in the light reactions of photosynthesis
• produce oxygen by oxidizing water
• produce simple sugars from carbon dioxide

Plants with the largest amount of which pigment will be best suited for growing conditions where light has a green hue.

• Chlorophyll A
• Chlorophyll B
• Carotenoids
• A combination of all 3