Mer Scott
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• Describe how cells capture light energy. • Describe how light energy is transduced into cellular energy. • Outline the inputs and outputs of photosynthesis.

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Mer Scott
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L13 Chloroplasts and photosynthesis

Frage 1 von 13

1

Chromoplasts have decreased thylakoid membranes.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

Erklärung

Frage 2 von 13

1

What could a possible explanation be for chloroplasts converting to chromoplasts?

Wähle eine der folgenden:

  • Ripening of a fruit

  • Withering of the plant

  • Winter beginning

Erklärung

Frage 3 von 13

1

Which plastid would be responsible for storing starch in a potato?

Wähle eine der folgenden:

  • Proplastid

  • Chloroplast

  • Chromoplast

  • Leucoplast

Erklärung

Frage 4 von 13

1

The light reactions in the thylakoid space:

Wähle eine der folgenden:

  • Use ATP and electrons from NADP+

  • Release ATP and electrons on NADPH

Erklärung

Frage 5 von 13

1

Which wavelengths of light are absorbed for photosynthesis?

Wähle eine der folgenden:

  • Cholorophyll-a

  • Cholorophyll-b

  • Carotenoids

  • All of the above.

Erklärung

Frage 6 von 13

1

400nm and 700 nm wavelengths are the most readily absorbed while green light is not absorbed at all.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

Erklärung

Frage 7 von 13

1

(Choose all correct).
Engelman's experiment:

Wähle eine oder mehr der folgenden:

  • Used algae.

  • Used bean plants.

  • Involved a diffraction of light using a prism.

  • Showed photosynthetic activity was dependant on wavelength.

  • Showed photosynthetic activity was dependant on the speed of light.

Erklärung

Frage 8 von 13

1

Where would you find the light harvesting pigment cholorphyll?

Wähle eine der folgenden:

  • In the stroma of chloroplasts.

  • In the thylakoid space.

  • In the thylakoid membrane.

Erklärung

Frage 9 von 13

1

Choose the correct statement.

Wähle eine der folgenden:

  • Photosystems are part of light-harvesting complexes.

  • A reaction centre complex is composed of a photosystem and a light-harvesting complex.

  • The light-harvesting complex is a protein which sits in the thylakoid membrane.

  • The reaction centre complex surrounds the light-harvesting complex.

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Frage 10 von 13

1

Order these steps of energy transfer from photons to chloroplasts:
An electron from the special chlorophyll in the reaction centre complex is excited.
Energy is passed along the chain of chlorophyll molecules.
Photon reaches light harvesting complexes/chlorophyll molecules.
The electron is transferred to the primary electron acceptor in the reaction centre complex.

Klicke und ziehe, um den Text zu vervollständigen.

    3.
    2.
    1.
    4.

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Frage 11 von 13

1

Choose the incorrect statement about the photosynthetic electron transport chain.

Wähle eine der folgenden:

  • Photosystem II precedes Photosystem I.

  • Photosystem II provides two electrons to move H+ down it's gradient through the Cytochrome complex.

  • Photosystem I provides electrons for NADP+ to become NADPH via NADP+ reductase.

  • Photosystem II splits water and releases oxygen.

  • ATP synthase uses energy from H+ moving down its gradient to synthesize ATP.

Erklärung

Frage 12 von 13

1

Cyanobacteria are the anaerobic bacteria which form algael blooms.

Wähle eins der folgenden:

  • WAHR
  • FALSCH

Erklärung

Frage 13 von 13

1

Fill in the steps of the Calvin Cycle.
1. : Three CO2 react with three 5-carbon compounds to make three 6-carbon compounds. This involves a protein known as .
2. : ATP and 6 NADPH are used to reduce three CO2 to three 3-carbon compounds.
3. : ATP are used to change five 3-carbon compounds to the original three 5-carbon compounds.

Klicke und ziehe, um den Text zu vervollständigen.

    Carbon fixation
    rubisco
    Reduction
    Regeneration of CO2 acceptor
    3
    6

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