chapter 8 questions
Which part of the light-independent reactions would be affected if a cell could not produce the enzyme RuBisCO?
The cycle would not be able to function because it would not be able to catalyze the reaction between carbon dioxide and RuBP.
Three of the same species of plant are each grown under a different colored light for the same amount of time. Plant A is grown under blue light, Plant B is grown under green light, and Plant C is grown under orange light. Assuming the plants use only chlorophyll a and chlorophyll b for photosynthesis, what would be the predicted order of the plants from most growth to least growth? a.A, C, B b.A, B, C c.C, A, B d.B, A, C
a
Which molecule must enter the Calvin cycle continually for the light-independent reactions to take place? a.CO2 b.RuBisCO c.RuBP d.3-PGA
a
Which of the following components is not used by both plants and cyanobacteria to carry out photosynthesis? a.chloroplasts b.chlorophyll c.carbon dioxide d.water
a
Which of the following statements is true? a.In photosynthesis, water and carbon dioxide are reactants. G3P and oxygen are products. b.In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. G3P and oxygen are products. c.In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. RuBP and oxygen are products. d.In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. G3P and water are products.
a
Which of the following structures is not a component of a photosystem? a.ATP synthase b.antenna molecule c.reaction center d.primary electron acceptor
a
From which component of the light-dependent reactions does NADPH form most directly? a.photosystem II b.photosystem I c.cytochrome complex d.ATP synthase
b
How many photons does it take to fully reduce one molecule of NADP+ to NADPH? a.1 b.2 c.4 d.8
b
In which compartment of the plant cell do the light-independent reactions of photosynthesis take place? a.thylakoid b.stroma c.outer membrane d.mesophyll
b
Plants containing only chlorophyll b are exposed to radiation with the following wavelengths: 10nm (x-rays), 450nm (blue light), 670nm (red light), and 800nm (infrared light). Which plants harness the most energy for photosynthesis? a.X-ray irradiated plants b.Blue light irradiated plants c.Red light irradiated plants d.Infrared irradiated plants
b
Predict the end result if a chloroplast's light-independent enzymes developed a mutation that prevented them from activating in response to light. a.GA3P accumulation b.ATP and NADPH accumulation c.Water accumulation d.Carbon dioxide depletion
b
Which statement about thylakoids in eukaryotes is not correct? a.Thylakoids are assembled into stacks. b.Thylakoids exist as a maze of folded membranes. c.The space surrounding thylakoids is called stroma. d.Thylakoids contain chlorophyll.
b
What is the source of electrons for the chloroplast electron transport chain? a.Carbon Dioxide b.NADPH c.Water d.Oxygen
c
What two main products result from photosynthesis? a.oxygen and carbon dioxide b.chlorophyll and oxygen c.sugars/carbohydrates and oxygen d.sugars/carbohydrates and carbon dioxide
c
Which complex is not involved in the establishment of conditions for ATP synthesis? a.photosystem I b.ATP synthase c.photosystem II d.cytochrome complex
c
Which statement correctly describes carbon fixation? a.the use of ATP and NADPH to reduce CO2 b.the use of RuBisCO to form 3-PGA c.the conversion of CO2 into an organic compound d.the formation of RuBP from G3P molecules e.the production of carbohydrate molecules from G3P
c
How are the NADPH and GA3P molecules made during photosynthesis similar? a.They are both end products of photosynthesis. b.They are both substrates for photosynthesis. c.They are both produced from carbon dioxide. d.They both store energy in chemical bonds.
d
