Photosynthesis Survey

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* 1. What is your name?

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

in plants

in prokaryotes

in fungi

three separate times during evolution

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* 3. Under what conditions do photosynthesis and cellular respiration occur in plants?

Photosynthesis and cellular respiration occur only in the light.

Photosynthesis occurs only in the light, and cellular respiration occurs only in the dark.

Photosynthesis occurs only in the light, and cellular respiration occurs in both the dark and the light.

Photosynthesis and cellular respiration occur in both the dark and the light.

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* 4. The oxygen released by photosynthesis is produced by which of the following processes?

splitting water molecules

chemiosmosis

the electron transfer system of photosystem I

the electron transfer system of photosystem II

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* 5. Which of the following statements correctly describes a distinction between autotrophs and heterotrophs?

Cellular respiration is unique to heterotrophs.

Only heterotrophs have mitochondria.

Autotrophs, but not heterotrophs, can nourish themselves beginning with CO2 and other nutrients that are inorganic.

Only heterotrophs require oxygen.

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* 6. 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?

the relationship between wavelength of light and the rate of aerobic respiration

the relationship between wavelength of light and the amount of heat released

the relationship between wavelength of light and the rate of photosynthesis

the relationship between carbon dioxide concentration and the rate of photosynthesis

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* 7. 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. 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?

red and yellow

blue and violet

green and yellow

green and red

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* 8. 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?

Paper chromatography would produce a single band of pigment that is characteristic of that particular plant.

Paper chromatography would separate the pigments into two bands that appear green.

Paper chromatography would separate the pigments into several bands that appear green or yellow/orange.

Paper chromatography would separate the pigments into two bands, one that appears blue and one that appears red.

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* 9. In autumn, chlorophyll is degraded in the leaves of deciduous trees. Why do the leaves change color to shades of yellow, orange, or red?

Sugars from sap fill the leaves prior to winter.

Degraded chlorophyll changes into many other colors.

In the absence of photosynthesis, the leaves produce energy exclusively by aerobic cellular respiration.

Other pigments such as carotenoids are still present in the leaves.

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

oxygen

chlorophyll in photosystem II

carbon dioxide

NADP+