CHAPTER 6 PHOTOSYNTHESIS (Week 10)

The oxygen that is released as O₂ during photosynthesis came from _____________ molecules.

• A. Carbon Dioxide

• B. Water

• C. Glucose

• D. Chlorophyll

Which choice correctly shows the gases that enter and exit plants during photosynthesis?

• A. Enter: Oxygen, Exit: Carbon dioxide
• B. Enter: Water vapor, Exit: Glucose
• C. Enter: Carbon dioxide, Exit: Oxygen
• D. Enter: Light ,Exit: Water vapor

Photosynthesis takes place in the membranes of small sacs called

• A. Thylakoids
• B. Grana
• C. Photosystems
• D. Photons

Which of the following is the correct equation for PHOTOSYNTHESIS?

• A. light + carbon dioxide + water --> glucose + oxygen
• B. oxygen + light + water --> carbon dioxide + sugar
• C. carbon dioxide + sugar + water --> oxygen + light
• D. carbon dioxide + oxygen + water --> Light+ Sugar

Why do plants need sunlight for photosynthesis?

• A. The light creates heat needed for photosynthesis to occur
• B. Plants can't absorb carbon dioxide in darkness
• C. Plants can't absorb water in darkness
• D. The light provides the energy needed to power photosynthesis

Why do plants conduct photosynthesis?

• A. To make light
• B. To make glucose
• C. To release carbon dioxide
• D. To make mitochondria

The pigment molecules responsible for photosynthesis are located in the

• A. Mitochondria
• B. Cytoplasm
• C. Stroma of the chloroplast
• D. Thylakoid membrane

Both carotenoids and chlorophyll a

• A. are photosynthetic pigments
• B. absorbs photons and electron of all energy ranges
• C. contains porphyrin rings
• D. absorbs violet and blue green light

During what stage of photosynthesis are ATP and NADPH converted to ADP + Pi and NADP+?

• A. The Light dependent reactions
• B. The Light independent reactions
• C. Krebs cycle
• D. Glycolysis

Why are plants usually green?

• A. Because the chlorophyll absorbs green light
• B. Because the accessory pigments combine to make green
• C. Because the chlorophyll reflects green light
• D. Because the accessory pigments only absorb green light