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20 questions focused on the process of photosynthesis.
Test por grenouilleverte3, actualizado hace más de 1 año
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Creado por grenouilleverte3
hace más de 9 años
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Pregunta 1
Pregunta
Photosynthesis involves the conversion of light into what?
Respuesta
-
Chemical energy
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Kinetic energy
-
Light energy
Pregunta 2
Pregunta
What wavelengths of light are in sunlight?
Respuesta
-
Red, green and blue
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Red, orange and blue
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Green, orange and purple
Pregunta 3
Pregunta
The main pigment which absorbs light is called Chloroplast
Respuesta
- True
- False
Pregunta 4
Pregunta
Which wavelengths of light are absorbed most?
Respuesta
-
Red and blue
-
Green and blue
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Green and red
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Yellow and red
Pregunta 5
Pregunta
Light energy absorbed by the pigments are used to do what two things?
Respuesta
-
Produce ATP and form carbon dioxide
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Produce ATP and split water molecules
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Produce ATP and form oxygen only
Pregunta 6
Pregunta
Select 3 methods of measuring rates of photosynthesis
Respuesta
-
Production of oxygen
-
Production of Carbon Dioxide
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Uptake of Oxygen
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Uptake of Carbon Dioxide
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Decrease in biomass
-
Increase in biomass
Pregunta 7
Respuesta
-
Chlorophyll
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Chlorophile
-
Chloroplast
-
Pigment in a plant which absorbs light energy
Pregunta 8
Pregunta
The light-independent reactions produce intermediate compounds which are used in the light-dependent reactions
Respuesta
- True
- False
Pregunta 9
Pregunta
The Calvin cycle is part of the light-independent reactions
Respuesta
- True
- False
Pregunta 10
Pregunta
What is a photosystem?
Respuesta
-
A group of hundreds of chlorophyll molecules located on the inner membrane of the chloroplast
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A group of hundreds of chlorophyll molecules located in the stroma of the chloroplast
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A group of hundreds of chlorophyll molecules located in thylakoid membranes
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A group of hundreds of chlorophyll molecules located in the cytoplasm of the plant cell
Pregunta 11
Pregunta
How does chlorophyll become photoactivated?
Respuesta
-
The light energy absorbed by the chlorophyll raises an electron in the molecule to be raised to a higher energy level
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The light energy absorbed by the chlorophyll moves an electron in the molecule to a lower energy level
Pregunta 12
Pregunta
Once the excited electron in a chlorophyll molecule has been passed from molecule to molecule, where does it go?
Respuesta
-
To the stroma
-
To a series of electron carriers in the thylakoid membranes
-
To a series of electron carriers in the mitochondrial membrane
Pregunta 13
Pregunta
Each time the electron passes to a new electron carrier, it gives up some of its energy. This keeps happening until, at some stage, enough is made to form a molecule of ATP. This process is called what?
Respuesta
-
Osmosis
-
Facilitated Diffusion
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Active transport
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Chemiosmosis
Pregunta 14
Pregunta
The production of ATP using the energy from an excited electron from photosystem II is called what?
Respuesta
-
cyclic photophosphorylation
-
non-cyclic photophosphorylation
Pregunta 15
Pregunta
Where do the light independent reactions take place?
Respuesta
-
The stroma of the chloroplast
-
The stroma of the mitochondrion
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The thylakoid membrane
-
The cytoplasm
Pregunta 16
Pregunta
Which of the following is an essential substrate for the light independent reactions?
Respuesta
-
oxygen
-
carbon dioxide
-
water
-
a proton
Pregunta 17
Pregunta
What is the enzyme which catalyses the fixation of carbon to ribulose bisphophate?
Respuesta
-
Ribulase
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Ribulose biphosphase
-
Rubisco
-
Rubasco
Pregunta 18
Pregunta
What is the product of carbon fixation?
Respuesta
-
6-carbon compound which is then split into two molecules of glycerate 3-phosphate
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5-carbon compound which is then split into two molecules of glycerate 3-phosphate
Pregunta 19
Pregunta
Which of the following structural features make chloroplasts appropriate for their function?
Respuesta
-
large surface area
-
small space inside thylakoids
-
fluid stroma
Pregunta 20
Pregunta
Light intensity, carbon dioxide concentration and temperature are all limiting factors in the rate of photosynthesis
Respuesta
- True
- False
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