AP Biology CH 8 - Photosynthesis - Test Questions

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

A) CO2 and glucose

B) H2O and O2

C) ADP, Pi, and NADP+

D) electrons and H+

E) ATP and NADPH

E) ATP and NADPH

Where does the Calvin cycle take place?

A) stroma of the chloroplast

B) thylakoid membrane

C) cytoplasm surrounding the chloroplast

D) chlorophyll molecule

E) outer membrane of the chloroplast

A) stroma of the chloroplast

In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary?

A) autotrophs and heterotrophs

B) producers and primary consumers

C) photosynthesizers

D) autotrophs

E) green plants

D) autotrophs

The reaction-center chlorophyll of photosystem I is known as P700 because

A) there are 700 chlorophyll molecules in the center.

B) this pigment is best at absorbing light with a wavelength of 700 nm.

C) there are 700 photosystem I components to each chloroplast.

D) it absorbs 700 photons per microsecond.

E) the plastoquinone reflects light with a wavelength of 700 nm.

B) this pigment is best at absorbing light with a wavelength of 700 nm.

What are the products of linear photophosphorylation? A) heat and fluorescence

B) ATP and P700

C) ATP and NADPH

D) ADP and NADP

E) P700 and P680

C) ATP and NADPH

What does the chemiosmotic process in chloroplasts involve?

A) establishment of a proton gradient

B) diffusion of electrons through the thylakoid membrane

C) reduction of water to produce ATP energy

D) movement of water by osmosis into the thylakoid space from the stroma

E) formation of glucose, using carbon dioxide, NADPH, and ATP

A) establishment of a proton gradient

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

A) thylakoid membrane

B) plasma membrane

C) inner mitochondrial membrane

D) A and C

E) A, B, and C

D) A and C

Where are the molecules of the electron transport chain found in plant cells?

A) thylakoid membranes of chloroplasts

B) stroma of chloroplasts

C) inner membrane of mitochondria

D) matrix of mitochondria

E) cytoplasm

A) thylakoid membranes of chloroplasts

Reduction of NADP+ occurs during

A) photosynthesis.

B) respiration.

C) both photosynthesis and respiration.

D) neither photosynthesis nor respiration.

E) photorespiration.

A) photosynthesis.

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

A) The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions.

B) The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the cycle provides water and electrons to the light reactions.

C) 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.

D) The light reactions provide the Calvin cycle with oxygen for electron flow, and the

Calvin cycle provides the light reactions with water to split.

E) There is no relationship between the light reactions and the Calvin cycle.

A) The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions.

Which of the following sequences correctly represents the flow of electrons during photosynthesis?

A) NADPH → O2 → CO2

B) H2O → NADPH → Calvin cycle

C) NADPH → chlorophyll → Calvin cycle D) H2O → photosystem I → photosystem II

E) NADPH → electron transport chain → O2

B) H2O → NADPH → Calvin cycle

In mechanism, photophosphorylation is most similar to A) substrate-level phosphorylation in glycolysis.

B) oxidative phosphorylation in cellular respiration.

C) the Calvin cycle.

D) carbon fixation.

E) reduction of NADP+.

A) substrate-level phosphorylation in glycolysis.

7) Which of the following does not occur during the Calvin cycle?

A) carbon fixation

B) oxidation of NADPH

C) release of oxygen

D) regeneration of the CO2 acceptor

E) consumption of ATP

C) release of oxygen

The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during

A) photosynthesis.

B) respiration.

C) both photosynthesis and respiration.

D) neither photosynthesis nor respiration.

E) photorespiration.

D) neither photosynthesis nor respiration.

Generation of proton gradients across membranes occurs during

A) photosynthesis.

B) respiration.

C) both photosynthesis and respiration.

D) neither photosynthesis nor respiration.

E) photorespiration.

C) both photosynthesis and respiration.

In mitochondria, chemiosmosis translocates protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis translocates protons from

A) the stroma to the photosystem II.

B) the matrix to the stroma.

C) the stroma to the thylakoid space.

D) the intermembrane space to the matrix.

E) ATP synthase to NADP+ reductase.

C) the stroma to the thylakoid space.