Metabolic Processes - Photosynthesis.

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Unit 1 Test - Metabolic Processes: Photosynthesis

Modified True/False

Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the sentence or statement true.

____ 1. The organelle that is unique to eukaryotic photoautotrophs is the chromoplast. _________________________

____ 2. Light energy is principally transferred by chlorophyll b. _________________________

____ 3. When exposed to bright white light chlorophyll fluoresces green. _________________________

____ 4. In general, photosynthesis rates are lower at lower oxygen concentrations. ________________________________________

____ 5. The location of the H+ reservoir in the chloroplast is the intermembrane space. ___________________________________

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Of the following biological compounds, which one contains the element, nitrogen?

____ 2. An oxidation/reduction is best shown by which of the following?

____ 3. The activity of an enzyme can be altered by changing the pH of its surroundings slightly. This change in pH works by

____ 4. Which of the following is not a cofactor or coenzyme?

____ 5. Which of the following statements concerning allosteric regulation is not true?

____ 6. Which of the following processes most likely does not involve anaerobic conditions?

____ 7. In an investigation of the pigments in the leaves of a particular plant, one spot moved 8.0 cm from the origin, while the solvent front moved 10.0 cm. What would the Rf value of the pigment be?

____ 8. Photophosphorylation specifically refers to the

____ 9. During carbon fixation, which of the following is a product?

____ 10. The name of the process whereby a plant uses oxygen in light.

Imagine you have five small glass jars that are sealed to the atmosphere. All the jars are filled with a bicarbonate solution (as a source of carbon dioxide) and an indicator. The differences between each jar are described below:

Jar #1: Has a small fish.

Jar #2: Has one small fish in addition to some aquatic plants.

Jar #3: Has three small fish in addition to some aquatic plants.

Jar #4: Has some aquatic plants.

Jar #5: Has some aquatic plants, but the jar is completely surrounded by aluminum foil.

The indicator shows you how much carbon dioxide is in each jar. The following table shows the relative amounts:

The following table shows the results of an experiment where the tubes were allowed to stand under natural light for several hours.

____ 11. The following are statements regarding the above results:

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I. respiration is taking place in all five test tubes

II. respiration is exceeding photosynthesis in Jar#3

III. photosynthesis is occurring in Jar#5

IV. the lowest concentration of carbon dioxide is found in Jar#2

Which of the above statements are correct?

Optional Multiple Choice - The correct answer is indicated by a (*)

  1. Photoexcitation occurs when
  1. 2ADP + 2Pi ---> 2 ATP on 2 cytochromes
  2. light releases electrons from double covalent bonds on chlorophyll a
  3. 2 H2O ---> 4H+ + O2 + 4 electrons
  4. pallisade mesophyll
  5. ultra-violet (UV)
  1. In a C3 plant most of ...

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