Review Questions Photosynthesis Question Preview (ID: 47789)
A2.
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An action spectrum is a graph showing
a) the rate of photosynthesis at the optimum wavelength of light
b) the effectiveness of photosynthesis at different wavelengths of light
c) the absorbance of different wavelengths of light by a photosynthetic pigment
d) the energy content of a photosynthetic pigment at different wavelengths of light
Photorespiration occurs when
a) PEP carboxylase binds to oxygen instead of carbon dioxide
b) Rubisco binds to carbon dioxide instead of oxygen
c) PEP carboxylase is not present in mesophyll cells
d) Rubisco is present in bundle sheath cells
Which of the following is a physiological adaptation in plants to avoid photorespiration?
a) Oxaloacetate
b) Krebs anatomy
c) Kranz anatomy
d) Malate
hexose phosphates are condensed
a) triose phosphates
b) diphosphates
c) bisphosphates
d) glycerate phosphates
Which of these factors that affect photosynthesis rate does not also affect transpiration rate?
a) temperature
b) humidity
c) carbon dioxide concentration
d) light intensity
During the light independent stage of photosynthesis, carbon dioxide is fixed and is converted into 2 molecules of
a) triose phosphate
b) glycerate-3-phosphate
c) glyceraldehyde -3-phosphatase
d) diphosphate
During the light independent stage, the molecule that combines with carbon dioxide is known as
a) ribulase bisphosphate
b) ribulose bisphosphate
c) ribulose bisphosphase
d) ribulase bisphosphase
Name the light harvesting cluster of pigments in a chloroplast thylakoid membrane.
a) Hill Reaction
b) Absorption spectra
c) Photosystem
d) Photophosphorylation
The light independent stage of photosynthesis can occur at night.
a) True
b) False
c)
d)
State the name of the stage pf photosynthesis where carbon dioxide is fixed.
a) Photolysis of water
b) Calvin Cycle
c) Krebs Cycle
d) Chemiosmosis
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