• Describe how cells capture light energy.
• Describe how light energy is transduced into cellular energy.
• Outline the inputs and outputs of photosynthesis.
What could a possible explanation be for chloroplasts converting to chromoplasts?
Responda
Ripening of a fruit
Withering of the plant
Winter beginning
Questão 3
Questão
Which plastid would be responsible for storing starch in a potato?
Responda
Proplastid
Chloroplast
Chromoplast
Leucoplast
Questão 4
Questão
The light reactions in the thylakoid space:
Responda
Use ATP and electrons from NADP+
Release ATP and electrons on NADPH
Questão 5
Questão
Which wavelengths of light are absorbed for photosynthesis?
Responda
Cholorophyll-a
Cholorophyll-b
Carotenoids
All of the above.
Questão 6
Questão
400nm and 700 nm wavelengths are the most readily absorbed while green light is not absorbed at all.
Responda
True
False
Questão 7
Questão
(Choose all correct).
Engelman's experiment:
Responda
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.
Questão 8
Questão
Where would you find the light harvesting pigment cholorphyll?
Responda
In the stroma of chloroplasts.
In the thylakoid space.
In the thylakoid membrane.
Questão 9
Questão
Choose the correct statement.
Responda
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.
Questão 10
Questão
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.
Responda
3.
2.
1.
4.
Questão 11
Questão
Choose the incorrect statement about the photosynthetic electron transport chain.
Responda
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.
Questão 12
Questão
Cyanobacteria are the anaerobic bacteria which form algael blooms.
Responda
True
False
Questão 13
Questão
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.
Responda
Carbon fixation
rubisco
Reduction
Regeneration of CO2 acceptor
3
6
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