#1
Which photosynthetic pigment is responsible for capturing light energy and is found in the thylakoid membrane?
Chlorophyll a
ExplanationChlorophyll a captures light energy in photosynthesis.
#2
In chromatography, what is the mobile phase?
The solvent that moves through the stationary phase
ExplanationMobile phase is the moving solvent in chromatography.
#3
Which wavelength of light is least effective in driving photosynthesis?
Yellow
ExplanationYellow light is least effective in photosynthesis.
#4
What is the main purpose of the Calvin cycle in photosynthesis?
Fix carbon dioxide into sugars
ExplanationCalvin cycle converts carbon dioxide into sugars.
#5
What is the primary role of the reaction center in photosystems during photosynthesis?
Initiate the electron transport chain
ExplanationReaction center initiates the electron transport chain.
#6
Which of the following pigments is responsible for the red, orange, and yellow colors in plants?
Carotenoids
ExplanationCarotenoids give plants red, orange, and yellow colors.
#7
What is the primary function of accessory pigments in photosynthesis?
Capture light energy and transfer it to chlorophyll
ExplanationAccessory pigments capture and transfer light energy to chlorophyll.
#8
Which type of chromatography separates pigments based on their size and charge?
Ion-exchange chromatography
ExplanationIon-exchange chromatography separates pigments by size and charge.
#9
What is the role of the electron transport chain in photosynthesis?
Produce ATP and NADPH
ExplanationElectron transport chain produces ATP and NADPH in photosynthesis.
#10
What is the primary function of carotenoids in photosynthetic organisms?
Capture light energy
ExplanationCarotenoids primarily capture light energy.
#11
In paper chromatography, what does the Rf value represent?
Retention factor, indicating the distance traveled by the solvent
ExplanationRf value indicates the distance solvent traveled in paper chromatography.
#12
Which photosynthetic pigment is commonly found in red algae and cyanobacteria?
Phycobilins
ExplanationPhycobilins are found in red algae and cyanobacteria.
#13
In chromatography, what does the stationary phase consist of?
Solid material on which pigments are separated
ExplanationStationary phase is solid material where pigments separate.
#14
In photosynthesis, what is the fate of the oxygen produced during the light-dependent reactions?
Released into the atmosphere
ExplanationOxygen produced in light-dependent reactions is released into the atmosphere.
#15
What is the primary role of the phycobilins in photosynthetic organisms?
Capture and transfer light energy to chlorophyll
ExplanationPhycobilins capture and transfer light energy to chlorophyll.