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55 Cards in this Set
- Front
- Back
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6H2O + 6CO2 --> C6H12O6 + 602
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Balanced equation for photosynthesis.
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C6H12O6 + 602 --> 6CO2 + 6H2O
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Balanced equation for cell respiration.
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During cell respiration, what is both produced and measured?
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CO2.
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During photosynthesis, what is both consumed and measured?
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CO2.
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The effects of cell respiration can be studied when leaves are in the _____.
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Dark (while there is no photosynthesis uptake of carbon dioxide).
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During the light, which reaction(s) are occuring?
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Both photosynthesis and cell respiration.
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Which reaction is carried out at all times?
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Cell respiration.
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When does photosynthesis occur?
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When green plant cells are exposed to LIGHT.
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How do we find cell respiration?
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Total in light - total in dark.
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How is the presence of photosynthesis tested?
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INDIRECTLY by using IKI Test for starch.
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The presence of starch identified by IKI is an indirect indicator of _______.
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Photosynthesis.
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Photosynthesis requires which type of Chlorophyll?
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Chlorophyll A.
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Why does photosynthesis require Chlorophyll A?
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Green areas of leaf contain Chlor. A and that is where most photo occurs/starch is found.
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What is the red pigment?
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Anthocyanin.
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Anthocyanin is water soluble because ______.
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Red pigment can be removed by boiling water.
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Do white areas on leaves have pigment?
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No.
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What pigments makes up the brick color in a Coleus leaf?
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Both anthocyanin and Chlorophyll.
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Is Chlorophyll water soluble like Anthocyanin?
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No.
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What will remove the green color in a Coleus leaf?
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Boiling Alcohol.
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What is the main photosynthetic pigment?
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Chlorophyll A.
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What are the antenna pigments?
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Chorophyll B, carotenes and xanthophylls.
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What is the technique to separate a mixture of solutes in same solution?
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Paper chromotography.
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How does solvent move up on paper during paper chromotography?
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By capillary action (adhesion + cohesion).
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Why do pigments move at different rates during paper chromotography?
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1) Size of pigment
2) Solubility of pigment in solvent 3) H bond to paper |
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What does the absorption spectrum plot?
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Wavelength of light (nm) vs. absorption
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On an absorption spectrum plot, which axis is the Wavelength of light?
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X Axis.
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On an absorption spectrum plot, which axis is the absorption?
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Y Axis.
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What machine is used to measure absorption spectrum?
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Spectrophotometer.
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How is pigment extracted from chromotography strips?
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By using acetone.
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On spectrophotometer, it is set to 100% only for ____.
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Acetone.
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What is the color range associated with the wavelengths 400 - 700 nanometers (nm)?
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Color range of violet through red.
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The visible colors from shortest to longest wavelength.
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VIB G. YOR
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The visible colors from longest to shortest wavelength.
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ROY G. BIV
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During photosynthesis, what color light is NOT absorbed and is reflected back?
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Green light.
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Name the order of pigments from furthest to nearest.
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Carotene, xanthophylls, chlorophyll a, lastly chlorophyll b.
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Why do leaves change color in autumn?
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Because pigments are replaced in PLASTIDS.
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Which color lights are best for photosynthesis?
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Red and blue.
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What do plants change carbon dioxide molecules into?
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Organic molecules (PGAL).
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What are the components that plants must have in order to complete photosynthesis?
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Chlorophyll A, ETS, and antenna pigments.
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What is the first stage of photosynthesis?
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Light dependent reaction.
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Light dependent reactions are powered by ______.
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Light.
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During Light dependent reaction, what is the splitting of water called?
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Photolysis.
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During Light dependent reaction, what is given off from photolysis?
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Oxygen gas and hydrogens.
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What are the two most important products during light dependent reaction?
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ATP and NADPH.
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Where does the light dependent reaction take place?
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In the Thylakoid Membrane (specific part of chloroplast)
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What is the second stage of Photosynthesis called?
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Light independent reaction / Dark Cycle.
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What compound does the light independent reaction / dark cycle start and end with?
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RuDP; it is recycled.
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What is the most important result during Light independent reaction / dark cycle?
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Carbon Fixation.
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Why is carbon fixation so important?
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It is used to form PGAL molecules.
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What are PGAL molecules used to make?
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Glucose.
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Where does the Light Independent Reaction / Dark Cycle occur?
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In the stroma (of chloroplast).
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When NADP accepts an electron, we say that is has been __________.
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Reduced.
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Photosynthesis is what type of reaction?
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Anabolism.
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Other than photosynthetic organsims, the only autotrophs are ______.
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Chemoautotrophs.
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Over the life of the plant, would it photosynthesize more or respire more?
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Respire...cell respiration occurs 24 hours a day.
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