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

Tags

NGSS.HS-LS1-5

Which of the following is directly associated with Photosystem I?

• harvesting light energy to make ATP
• receiving electrons from the thylakoid membrane

• generation of molecular oxygen
• extraction of hydrogen electrons from the splitting of water

Answer explanation

Remember that the photo systems collect the electrons to utilize their energy. The light is responsible for splitting 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.

Tags

NGSS.HS-LS2-5

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

Tags

NGSS.HS-LS1-7

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

Tags

NGSS.HS-LS2-5