AP Photosynthesis

Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?

• CO2 and glucose
• H2O and O2
• electrons and H+
• ATP and NADPH

Where does the Calvin cycle take place?

• stroma of the chloroplast
• thylakoid membrane
• outer membrane of the chloroplast
• interior of the thylakoid membrane

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

Which of the following events occurs in the light reactions of photosynthesis?

• NADP+ is produced
• ATP is consumed to yield ADP
• carbon dioxide is fixed in organic molecules
• light is absorbed and funneled to reaction-center chlorophyll a

Which of the following is directly associated with Photosystem I?

• harvesting light energy to make ATP
• receiving electrons from the thylakoid membrane ETC
• generation of molecular oxygen
• extraction of hydrogen electrons from the splitting of water

In a plant cell, where are ATP synthase complexes located?

• thylakoid membranes only
• inner mitochondrial membranes only
• thylakoid membrane and inner mitochondrial membranes
• thylakoid membrane and plasma membranes

Which of the following statements about the relationship between photosynthesis and cellular respiration is true?

• In cellular respiration the biochemical pathways of photosynthesis run in reverse.
• In photosynthesis the biochemical pathways of cellular respiration run in reverse.
• Cellular respiration occurs only in animals and photosynthesis occurs only in plants.
• Cellular respiration is catabolic and photosynthesis is anabolic.

Where are the molecules of the electron transport chain associated with photophosphorylation located in plant cells?

• thylakoid membanes of chloroplasts
• stroma of chloroplasts
• matrix of mitochondria
• outer membrane of chloroplasts

In photosynthetic cells, synthesis of ATP by chemiosmosis occurs during

• photosynthesis only
• cellular respiration only
• both photosynthesis and cellular respiration
• photophosphorylation only

Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?

• The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, ℗i, and NADP+ to the light reactions.
• The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.
• The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP.
• The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.