R:Light Reaction of Photosynthesis
Quiz by DIVINA GRACIA BRILLANTES
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- Q1
What signals the start of the light reaction process?
when electrons are released in the reaction center chlorophyll
after photolysis
when photons hit the chlorophyll molecules
when ATP are generated in the ATP synthase
10s - Q2
What happens when electrons in PS II are reenergized?
it will be released to ferredoxin
it will give the electrons to NADP+
it will be used to allow the entry of H+
it will be used to to phosphorylate ADP
10s - Q3
What are the product(s) of cyclic electron flow?
O2 only
ATP, NADPH and O2 only
ATP only
ATP and NADPH only
10s - Q4
What do you call the movement of ions across a membrane through a concentration gradient?
photolysis
photorespiration
chemiosmosis
photophosphorylation
10s - Q5
What compound is the electron donor in the light reaction ?
NADP+
glucose
CO2
water
10s - Q6
What are the products of the light reaction?
ATP, NADP+
ADP , NADP+
ATP, Glucose NADP+
ATP, NADPH
10s - Q7
It is the conversion of ADP to ATP using the energy of sunlight by activation of PSII.
Photolysis
Chemiosmosis
Photorespiration
Photophosphorylation
10s - Q8
What happens to the electrons in the non cyclic electron flow?
it will used in chemiosmosis
it will be used to reduce NADP+
it will be replaced by water molecules
it will be recycled and reenergized by PSI
10s - Q9
Why are the leaves green?
lights are absorbed
lights are being reflected
they reflect sunlight
they have green pigment chlorophyll
10s - Q10
Which color of light has the maximum light absorption?
green light
blue light
red light
yellow light
10s - Q11
Where does oxygen come from?
glucose
water
carbon dioxide
NADPH
10s - Q12
Why is there a need to transfer electrons from PSII to PSI?
to reach FNR
to be carried by the electron carriers
to produce ATP
to reenergize the electrons
10s - Q13
What is the source of energy in photosynthesis?
water
glucose
ATP
sunlight
10s - Q14
How many electrons are absorbed by cytochrome b6f?
2
6
none
4
10s - Q15
Purple-sulfur bacteria has only PS I that generates ATP , others have PSI and PSII, what that this imply about these type of bacteria?
they do not evolve
they are single celled organisms
they are extinct
they are ancestral
10s