photosynthesis
Which of the following are products of the Calvin cycle and are utilized in the light reactions of photosynthesis?
ADP,P,NADP
Cyclic electron flow in the chloroplast produces
ATP
The light reactions of photosynthesis supply the Calvin cycle with
ATP and NADPH
what is produced by the light-dependent reactions of photosynthesis and used in the calvin cycle
ATP and NADPH
Which of the following statements is not true of ribulose bisphosphate carboxylase
It catalyzes a photophorilation
A plant is exposed to increasing light intensity from very dim to bright light, while the carbon dioxide concentration and temperature are kept at an optimum level. What will happen to the rate of oxygen production?
It will increase to a maximum level
Which variable has the least effect on enzyme activity?
Light intensity
The reactions of the Calvin cycle require all of the following molecules EXCEPT:
NADPH
All of the events listed below occur in the light reactions of photosynthesis except
carbon dioxide is incorporated into PGA.
You have just discovered a new flower species that has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are NOT being absorbed by this pigment?
Red and yellow
Which of the following statements about the light reactions of photosynthesis is FALSE?
The proton gradient to reduce NADP
The photosynthetic activity of desert plants is often reduced in the middle of the day. What is the most reasonable explanation for this fact?
The stomata close to preserve water and gas exchange decreases
All the following statements are correct regarding the Calvin Cycle except
These reactions begin soon after sundown and end before sunrise.
Where is the chlorophyll found in a plant cell
Thylaoid membranes
The primary function of the light reactions of photosynthesis is...
To produce ATP and NADPH
Tylakoids strackted in colums
are called grama
Organisim that can exist on light and inorganic form of carbon and other raw material
are called photoautotrophs.
Which type of light is least useful for photosythesis
green
Each photosystem
has special chlorophyll "a" molecule in the reaction center
All the following compounds are required at some stage of the photosythesis except
oxygen
Which of the following is not assiciated with photosystem II
photophosphorylation
Which of the following statements is more closely associated with a decrease in a potential world of food production
photorespiration
What is the source of the oxygen released into the air as a product of of photosythesis
water
What is the source of oxygen rekeases into the air as a product of photosynthesis
water only
Which of the following sequences correctly represents the flow of electrons during photosynthesis
H2O → NADPH → Calvin cycle
Which of the following is not directly associated with photosystem I
Harvesting light energy by cholophyll
where do the light dependent and light independent reactions occur
I and IV
What does the chemiosmotic process in chloroplasts involve?
establishment of a proton gradient
These 3 susbstrartes for the enzyme RubBP carboxylase are
CO2, O2 and RuBP
Which of the folowing staments regarding events in the functioning of photosystem II is false
The P680 chlorophyll donates a pair of protons to NADPH, which is thus
All of the following statements are true EXCEPT:
The light reactions of photsynthesis provide energy from the calvin cycles
which of the following does not occur in the Calvin Cycle
relese oxygen
The reaction center chlorophyll of this system is known as P700 because
this pigment is best at absorbing light having a wavelength of 700nm (the far-red part of the spectrum).
In plant cell ATP is made in response to light as ETC is involved this chain is found in the
thylakoid membranes