15 Questions
What is the distinguishing feature of anoxygenic photosynthesis?
Production of oxygen
Which organisms are capable of anoxygenic photosynthesis?
Purple and green photosynthetic bacteria
What pigment is used by halophilic members of the Archaea for phototrophic growth?
Bacteriorhodopsin
Which pigment is used in oxygenic photosynthesis?
Chlorophyll
Why does the phototrophic growth mechanism found in halophilic members of the Archaea not qualify as photosynthesis by some definitions?
No pigment is involved
Which type of microbial organisms are able to carry out photosynthesis?
Multiple types including cyanobacteria, algae, and purple and green photosynthetic bacteria
What is the primary function of the 'light' reactions in photosynthesis?
Trap light energy and produce ATP
Which molecules predominate in organisms carrying out oxygenic photosynthesis?
Chlorophyll a and b
What is the role of the antenna molecules in the light-gathering process?
Absorb photons of radiant light
What is the function of the 'dark' reactions in photosynthesis?
Dependent on the ATP and NADPH produced by the light reaction
Which molecules are involved in the reduction of carbon dioxide to produce carbohydrates?
ATP and NADPH
What is the term used to describe the pigment/protein complex where electron transfer occurs following excitation of the chlorophyll molecule?
Reaction centre
'Dark' reactions are dependent on which products from the 'light' reactions?
ATP and NADPH
What is the immediate result of chlorophyll absorbing photons of light?
'Excited' state of the molecule
What is the function of chlorophyll in oxygenic photosynthesis?
Pass excited electrons to convert NADP+ to NADPH
Explore the different microbial types that are able to carry out photosynthesis and understand the concept of oxygenic photosynthesis, which is found in algae, cyanobacteria, and green plants. Learn about the ability of photosynthetic organisms to derive cellular energy from the energy of the Sun.
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