FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 10: Photosynthesis

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 31

Multiple Choice

Review LaterAdd Note

Review Later

Which of the following processes occurs during the Calvin cycle?

A) reduction of NADPH
B) release of oxygen
C) regeneration of the CO₂ acceptor
D) production of ATP

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

A spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. Plants will be grown to provide oxygen and to recycle carbon dioxide. Since the spaceship will be too far from the sun for photosynthesis, an artificial light source will be needed. What wavelengths of light should be used to maximize plant growth with a minimum of energy expenditure?

A) full-spectrum white light
B) green light
C) a mixture of blue and red light
D) UV light

Correct Answer

verified

Show Answer

Question 33

Multiple Choice

Review LaterAdd Note

In mechanism, photophosphorylation is most similar to

The mechanism of photophosphorylation is most similar to which of the following processes?

Which molecule is the final electron acceptor for electrons from photosystem I?

Which of the following events are associated with chemiosmosis in chloroplasts?

Carotenoids are often found in foods that are considered to have antioxidant properties in human nutrition. What related function do they have in plants?

In which of the following organisms did the process of photosynthesis most likely originate?

The reducing power for Calvin cycle reactions is provided by which of the following molecules?

Why are C₄ plants able to photosynthesize with no apparent photorespiration?

Which of the following events accompanies absorption of energy by chlorophyll molecules of the reaction-center complex?

Which process is most directly driven by light energy?

Which of the following processes is most directly driven by light energy?

Theodor W. Engelmann illuminated a filament of algae with light that passed through a prism, thus exposing different segments of algae to different wavelengths of light. He added aerobic bacteria and then noted in which areas the bacteria congregated. He noted that the largest groups were found in the areas illuminated by the red and blue light. Which of the following statements describes a relationship that Engelmann's experiment helped to determine?

Which of the following statements best describes the relationship between photosynthesis and cellular respiration?

Paper chromatography is a technique used to separate molecules based upon their size and solubility in a particular solvent. If pigments from a particular species of plant are extracted and subjected to paper chromatography, which of the following results is most likely?

Which of the following processes would be most directly affected if a thylakoid membrane is punctured so that the interior of the thylakoid is no longer separated from the stroma?

In mitochondria, an electron transport chain pumps protons from the matrix into the intermembrane space, whereas in chloroplasts, an electron transport chain pumps protons from the ________.

P680⁺ is said to be the strongest biological oxidizing agent. Given its function, why is this necessary?

Students conducted an experiment to determine the effect of light intensity on the rate of photosynthesis. They punched 40 leaf disks from spinach leaves and used a syringe partially filled with water to pull the gases from the leaf disks so that all leaf disks sunk to the bottom of the syringe. Ten leaf disks from the syringe were placed in each of four cups and covered with 50 ml of the solutions as indicated below. All leaf disks were resting on the bottom of the cups when the experiment began. The volume of liquid in each cup and the temperature of the solutions were held constant. All cups were placed 0.5 meters from the designated light source. A large beaker of water was placed between the light and the cups to act as a heat sink to prevent a change in temperature. At the end of 10 minutes, the number of disks floating in each cup was recorded. Use your knowledge of the mechanism of photosynthesis and the data presented in the chart to determine which of the statements is a correct explanation for the students' data.