Which of the following statements regarding photosynthesis and carbon dioxide is false?
Burning wood contributes more to acid rain than burning fossil fuels
What is the name given to organisms that can make their own food and the food for the biosphere?
In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the
Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true?
In photosynthesis, carbon dioxide is reduced to form sugar, while in respiration, sugar is oxidized to form carbon dioxide.
The light reactions occur in the ________, while the Calvin cycle occurs in the __________.
thylakoid membranes... stroma
Which of the following statements about the absorption of photons by pigment molecules is true?
The release of energy by the excited electron can be as heat, light or fluorescence
Which of the following photosynthetic pigments can be found at the photosystem reaction center?
How do the reaction centers of photosystem I and II differ?
Each preferentially absorbs slightly different wavelengths of light
The electron transport chains of the light reactions
shuttle electrons along in a series of redox reactions
As a result of the cascade of electrons down the electron transport chains of the light reactions,
NADP+ is reduced to NADPH.
The electrons lost from the reaction center of photosystem I are replaced by electrons from
the bottom of the electron transport chain
Photophosphorylation differs from oxidative phosphorylation in that
the final electron acceptor is NADP+ and not oxygen.
In photophosphorylation, energy from electron flow is used to transport ______ from the _______ to the thylakoid compartment, generating a concentration gradient of _____.
Mitochondria transfer _________ energy from ___________ to ATP; chloroplasts transform ______ energy into the chemical energy of ATP.
chemical... food... light
The Calvin cycle constructs ________, an energy-rich molecules that a plant cell can then use to make glucose or other organic molecules.
Plants use sugars as
a fuel for cellular respiration and a starting material for making other organic molecules
The greenhouse effect is
reduced by photosynthesis, which removes carbon dioxide from the atmosphere
Which of the following statements about the greenhouse effect is true?
The greenhouse effect is exacerbated by the use of fossil fuels
Which of the following has been a major source of ozone destruction over the past 50 years?
According to this figure, how do H+ ions make their way from the stroma to the thylakoid interior?
through an electron transport chain molecule
Based on your knowledge of the process of photosynthesis, the plant in the container placed under red light would probably
absorb more CO2 than the plants under the green light
Carbon dioxide absorption is an appropriate indicator of photosynthesis because
CO2 is needed to produce sugars in the Calvin cycle.