#Question id: 10223
#Unit 6. System Physiology – Plant
when plastoquinone is accumulates in the reduced state, Reduced plastoquinone accumulates when PSII is being activated more frequently than PSI. What will happen when plastoquinone becomes more oxidized?
#Question id: 10222
#Unit 6. System Physiology – Plant
Energy partitioning between two photosystem protects them from quick dessipation or quick inactivation this energy partitioning take place by a protein kinase that can phosphorylate a specific threonine residue on the surface of LHCII, what is the role of LHCII in phosphorylated and non-phosphorylated state?
a.) LHCII in phosphorylated state migrate towards the PSI in the unstacked region and delivers energy to the PSI
b.) LHCII in nonphosphorylated state moves back to the grana and delivers energy to the PSII
c.) LHCII in phosphorylated state migrate towards the PSII in the stacked region and delivers energy to the PSI
d.) LHCII in nonphosphorylated state moves towards the stroma lamellae unstacked region and delivers energy to the PSII
Which of the following combination is CORRECT?
#Question id: 10220
#Unit 6. System Physiology – Plant
Thylakoid membranes contain a protein kinase that can phosphorylate a specific threonine residue on the surface of LHCII. How the kinase is activated?
#Question id: 10219
#Unit 6. System Physiology – Plant
The PSII reaction center leads to easily inactivation and damage by photoinhibition process while Photosystem I Is Protected from Active Oxygen Species, Why PSI protect from active oxygen species in compare to PSII
#Question id: 10217
#Unit 6. System Physiology – Plant
Another effect that appears to be a major factor in the stability of the photosynthetic apparatus, which occurs when excess excitation arriving at the PSII reaction center leads to its inactivation and damage is known as
#Question id: 10215
#Unit 6. System Physiology – Plant
Chloroplast movement is widespread among algae, mosses, and leaves of higher plants, what will be the orientation of chloroplast in dark as well as in light?
a.) In dark, chloroplasts gather at the cell surfaces parallel to the plane of the leaf so that they are aligned perpendicularly to the incident light
b.) Under high light, , the chloroplasts move to the cell surfaces that are parallel to the incident light, thus avoiding excess absorption of light
c.) the orientation of the chloroplasts in the dark is such that maximizes absorption of light
d.) the orientation of the chloroplasts in the high light is such that maximizes absorption of light
Which of the following statements is correct?