Chapter 10 AP Bio Exam - Mr. Mazzulli

Name___________________________________ Date_______________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)	Plants that fix CO2 into organic acids at night when the stoma are open and carry out the Calvin cycle during the day when the stoma are closed are called	1) ______

	A)  C3 plants.
	B)  C4 plants.
	C)  CAM plants.
	D)  Only A and B are correct.
	E)  A, B, and C are correct.

2)

Assume a thylakoid is somehow punctured so that the interior of the thylakoid is no longer separated from the stroma. This damage will have the most direct effect on which of the following processes?

2) ______

	A)  the absorption of light energy by chlorophyll
	B)  the flow of electrons from photosystem II to photosystem I
	C)  the synthesis of ATP
	D)  the reduction of NADP+
	E)  the splitting of water

Figure 10.1
3)	Figure 10.1 shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different?	3) ______

	A)  Other pigments absorb light in addition to chlorophyll a.
	B)  Anaerobic bacteria probably interfered with light absorption.
	C)  Bright sunlight destroys photosynthetic pigments.
	D)  The two lines are probably the result of inaccurate measurements.
	E)  Green and yellow wavelengths inhibit the absorption of red and blue wavelengths.

4)

Which of the following statements about the light reactions of photosynthesis is FALSE?

4) ______

	A)  Some electrons are recycled and some are not.
	B)  Chlorophyll (and other pigments) absorb light energy which excites electrons.
	C)  The proton gradient is used to reduce NADP.
	D)  An electron transport chain is used to create a proton gradient.
	E)  The splitting of water molecules provides a source of electrons.

5)

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

5) ______

	A)  H2O and O2
	B)  CO2 and glucose
	C)  electrons and H+
	D)  ADP, Pi, and NADP+
	E)  Both C and D are correct.

Wavelength of light Figure 10.2
6)	From the photosynthetic action spectrum in Figure 10.2, we can correctly conclude that	6) ______

	A)  there are two independent photosystems in leaves: one for red light alone, one for blue light alone.
	B)  chlorophyll absorbs more green than red light.
	C)  plants can use all colors of visible light for photosynthesis.
	D)  every color of light is equally good for photosynthesis.
	E)  light in the green range produces the most efficient photosynthesis.

7)

The primary function of the light reactions of photosynthesis is

7) ______

	A)  to produce ATP and NADPH.
	B)  to produce NADPH used in respiration.
	C)  to produce energy-rich glucose from carbon dioxide and water.
	D)  to use ATP to make glucose.
	E)  to convert light energy to the chemical energy of PGAL.

8)

The reactions of the Calvin cycle require all of the following molecules EXCEPT

8) ______

	A)  glucose.
	B)  CO2.
	C)  NADPH.
	D)  ATP.
	E)  RuBP.

9)

You have just discovered a new flower species that has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?

9) ______

	A)  blue and violet
	B)  green and yellow
	C)  red and yellow
	D)  blue, green, and red
	E)  green, blue, and violet

10)

All of the events listed below occur in the energy-capturing light reactions of photosynthesis EXCEPT

10) ______

	A)  light is absorbed and funneled to a reaction center chlorophyll a.
	B)  NADP+ is reduced to NADPH.
	C)  oxygen is produced.
	D)  ADP is phosphorylated to yield ATP.
	E)  carbon dioxide is incorporated into PGA.

11)

In C4 photosynthesis, carbon fixation takes place in the ______________________ cells, and then is transferred as malic or aspartic acid to __________________________ cells, where carbon dioxide is released for entry into the Calvin cycle.

11) ______

	A)  stomatal; epidermal
	B)  stomatal; mesophyll
	C)  mesophyll; bundle-sheath
	D)  bundle-sheath; epidermal
	E)  epidermal; mesophyll

12)

All of the following compounds are required (i.e., are necessary constituents for chemical reactions) at some stage of photosynthesis in plants, EXCEPT

12) ______

	A)  oxygen.
	B)  NADP.
	C)  adenosine triphosphate.
	D)  water.
	E)  carbon dioxide.

13)

On which of the following features do most plant and animal cells differ?

13) ______

	A)  transcription
	B)  mitochondrial function
	C)  active transport mechanisms
	D)  structure of nucleus
	E)  primary energy source

14)

Where does the Calvin cycle of photosynthesis take place?

14) ______

	A)  stroma of the chloroplast
	B)  thylakoid membrane
	C)  chlorophyll molecule
	D)  outer membrane of the chloroplast
	E)  cytoplasm surrounding the chloroplast

Figure 10.3
15)	Which of the following statements is TRUE concerning the diagram in Figure 10.3?	15) ______

	A)  The light reactions take place only in cell I.
	B)  These kinds of cells are usually found in conifers that are in hot, dry climates.
	C)  This diagram represents some of the events of C4 photosynthesis.
	D)  Cell I is a bundle-sheath cell.
	E)  This diagram represents the type of photosynthesis found in most aquatic plants.

16)

Of the following, the color of light least effective in driving photosynthesis is

16) ______

	A)  green.
	B)  red.
	C)  blue.
	D)  orange.
	E)  yellow.

17)

Cyclic electron flow in the chloroplast produces

17) ______

	A)  ATP.
	B)  NADPH.
	C)  glucose.
	D)  Only A and B are correct.

18)

In plant cells, ATP is made in response to light. An electron transport chain is involved. This electron transport chain is found in the

18) ______

	A)  stroma of chloroplasts.
	B)  matrix of mitochondria.
	C)  inner membrane of mitochondria.
	D)  cytoplasm.
	E)  thylakoid membranes of chloroplasts.

Use the following information to answer the questions below. Thomas 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.
19)	What did he conclude about the congregation of bacteria in the red and blue areas?	19) ______

	A)  Bacteria congregated in these areas because these areas had the most oxygen being released.
	B)  Bacteria congregated in these areas due to an increase in the temperature of the red and blue light.
	C)  Bacteria congregated in these areas due to an increase in the temperature caused by an increase in photosynthesis.
	D)  Bacteria released excess carbon dioxide in these areas.
	E)  Bacteria are attracted to red and blue light and thus these wavelengths are more reactive than other wavelengths.

20)

The purpose of this experiment was to determine

20) ______

	A)  the relationship between wavelengths of light and the rate of photosynthesis.
	B)  the relationship between heterotrophic and autotrophic organisms.
	C)  the relationship between wavelengths of light and the amount of heat released.
	D)  the relationship between the concentration of carbon dioxide and the rate of photosynthesis.
	E)  the relationship between wavelengths of light and the rate of aerobic respiration.

21)

If you ran the same experiment without passing light through a prism, what would you predict?

21) ______

	A)  There would be no difference in results.
	B)  The number of bacteria present would decrease due to an increase in the carbon dioxide concentration.
	C)  The number of bacteria would decrease due to a decrease in the temperature of the water.
	D)  The number of bacteria present would increase due to an increase in the carbon dioxide concentration.
	E)  The bacteria would be relatively evenly distributed along the algal filaments.

22)

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

22) ______

	A)  Photosynthesis occurs only in plants and respiration occurs only in animals.
	B)  Respiration is the exact reversal of the biochemical pathways of photosynthesis.
	C)  Respiration is anabolic and photosynthesis is catabolic.
	D)  Photosynthesis stores energy in complex organic molecules and respiration releases it.
	E)  ATP molecules are produced in photosynthesis and used up in respiration.

SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Refer to the following choices to answer the following questions. Each choice may be used once, more than once, or not at all. Indicate whether the following events occur during A. photosynthesis B. respiration C. both photosynthesis and respiration D. neither photosynthesis nor respiration
23)	synthesis of ATP by the chemiosmotic mechanism	23) ______

24)

oxidation of water

24) ______

25)

reduction of NADP+

25) ______

26)

CO2 fixation

26) ______

27)

oxidative phosphorylation

27) ______

28)

generation of proton gradients across membranes

28) ______

For the following questions, compare the light reactions with the Calvin cycle of photosynthesis in plants. Use the following key: A. light reactions alone B. the Calvin cycle alone C. both the light reactions and the Calvin cycle D. neither the light reactions nor the Calvin cycle E. occurs in the chloroplast but is not part of photosynthesis
29)	produces molecular oxygen (O2)	29) ______

30)

forms a proton gradient

30) ______

31)

requires ATP

31) ______

32)

requires ADP

32) ______

33)

produces NADH

33) ______

34)

produces NADPH

34) ______

35)

inactive in the dark

35) ______

36)

requires CO2

36) ______

37)

requires glucose

37) ______

38)

produces triose sugars

38) ______

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
39)	In green plants, the primary function of the Calvin cycle is to	39) ______

	A)  use ATP to release carbon dioxide.
	B)  transport RuBP out of the chloroplast.
	C)  construct simple sugars from carbon dioxide.
	D)  use NADPH to release carbon dioxide.
	E)  split water and release oxygen.

40)

Which of the following is NOT directly associated with photosystem II?

40) ______

	A)  splitting water
	B)  release of oxygen
	C)  harvesting light energy by chlorophyll
	D)  P680
	E)  photophosphorylation