Exam 10: Photosynthesis

In mitochondria, chemiosmosis moves protons from the matrix into the intermembrane space, whereas in chloroplasts, chemiosmosis moves protons from the ________.

How are the light-dependent and light-independent reactions of photosynthesis related?

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

A flask containing photosynthetic green algae and a control flask containing water with no algae are both placed under a bank of lights, which are set to cycle between 12 hours of light and 12 hours of dark. The dissolved oxygen concentrations in both flasks are monitored. Predict what the relative dissolved oxygen concentrations will be in the flask with algae compared to the control flask. The dissolved oxygen in the flask with algae will ________.

Plastoquinone (PQ), an electron carrier of small molecular weight, is found in the electron transport chain associated with photosystem II. If PQ is not directly anchored to other membrane or cytoplasmic structures, it is probably ________.

Suppose a plant has a unique photosynthetic pigment and the leaves of this plant appear to be reddish yellow. What wavelengths of visible light are absorbed by this pigment?

Which statement describes the functioning of photosystem II?

The phylogenetic distribution of the enzyme rubisco is limited to ________.

Use the accompanying figure to answer the question(s) below. -The proteins of the electron transport chain active in the light-dependent reactions ________.

Use the accompanying figure to answer the question(s) below. -What is the difference between NAD+ and NADP?

What is the main purpose of light-dependent reactions of photosynthesis?

Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will most directly affect the ________.

Use the following information to answer the question(s) below. 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. -If the power fails and the lights go dark, CO2 levels will ________.

When oxygen is released as a result of photosynthesis, it is a direct by-product of ________.

Use the accompanying figure and the molecules labeled A, B, C, D, and E to answer the following question. Refer to the figure. If the carbon atom of each of the incoming CO2 molecules is labeled with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after one cycle?

Use the following information to answer the question below. 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. If you ran the same experiment as Engelmann without passing light through a prism, what would you predict?

In plants, reduction of NADP+ occurs during ________.

Suppose the interior of the thylakoids of isolated chloroplasts were made acidic and then transferred in the dark to a pH 8 solution. What would most likely happen?

The accumulation of free oxygen in Earth's atmosphere began with the origin of ________.

If photosynthesizing green algae are provided with CO2 containing heavy oxygen (18O), later analysis will show that all of the following molecules produced by the algae contain 18O EXCEPT ________.