9023704
Pregunta 1
Pregunta
Chromoplasts have decreased thylakoid membranes.
Respuesta
- True
- False
Pregunta 2
Pregunta
What could a possible explanation be for chloroplasts converting to chromoplasts?
Respuesta
-
Ripening of a fruit
-
Withering of the plant
-
Winter beginning
Pregunta 3
Pregunta
Which plastid would be responsible for storing starch in a potato?
Respuesta
-
Proplastid
-
Chloroplast
-
Chromoplast
-
Leucoplast
Pregunta 4
Pregunta
The light reactions in the thylakoid space:
Respuesta
-
Use ATP and electrons from NADP+
-
Release ATP and electrons on NADPH
Pregunta 5
Pregunta
Which wavelengths of light are absorbed for photosynthesis?
Respuesta
-
Cholorophyll-a
-
Cholorophyll-b
-
Carotenoids
-
All of the above.
Pregunta 6
Pregunta
400nm and 700 nm wavelengths are the most readily absorbed while green light is not absorbed at all.
Respuesta
- True
- False
Pregunta 7
Pregunta
(Choose all correct).
Engelman's experiment:
Respuesta
-
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.
Pregunta 8
Pregunta
Where would you find the light harvesting pigment cholorphyll?
Respuesta
-
In the stroma of chloroplasts.
-
In the thylakoid space.
-
In the thylakoid membrane.
Pregunta 9
Pregunta
Choose the correct statement.
Respuesta
-
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.
Pregunta 10
Pregunta
Order these steps of energy transfer from photons to chloroplasts:
[blank_start]3.[blank_end] An electron from the special chlorophyll in the reaction centre complex is excited.
[blank_start]2.[blank_end] Energy is passed along the chain of chlorophyll molecules.
[blank_start]1.[blank_end] Photon reaches light harvesting complexes/chlorophyll molecules.
[blank_start]4.[blank_end] The electron is transferred to the primary electron acceptor in the reaction centre complex.
Respuesta
-
3.
-
2.
-
1.
-
4.
Pregunta 11
Pregunta
Choose the incorrect statement about the photosynthetic electron transport chain.
Respuesta
-
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.
Pregunta 12
Pregunta
Cyanobacteria are the anaerobic bacteria which form algael blooms.
Respuesta
- True
- False
Pregunta 13
Pregunta
Fill in the steps of the Calvin Cycle.
1. [blank_start]Carbon fixation[blank_end]: Three CO2 react with three 5-carbon compounds to make three 6-carbon compounds. This involves a protein known as [blank_start]rubisco[blank_end].
2. [blank_start]Reduction[blank_end]: [blank_start]6[blank_end] ATP and 6 NADPH are used to reduce three CO2 to three 3-carbon compounds.
3. [blank_start]Regeneration of CO2 acceptor[blank_end]: [blank_start]3[blank_end] ATP are used to change five 3-carbon compounds to the original three 5-carbon compounds.
Respuesta
-
Carbon fixation
-
rubisco
-
Reduction
-
Regeneration of CO2 acceptor
-
3
-
6
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