BIO 110 Week 5 lab --Photosynthesis - Chlorophyll Extraction Questions and Answers Solved Correctly
what is photosynthesis? - Answersthe conversion of light energy into useful biological energy (ATP) and
"reducing power" that drives the conversion of carbon dioxide and water into sugar
what carries out the process of photosynthesis? - Answersphotosynthetic autotrophs
what is the first step of photosynthesis? - Answersthe absorption of visible light photons by chlorophyll
what is chlorophyll? - Answerspigment that makes plants green
what are photons? - Answers"packets" of light energy
how is the energy associated with a photon and its wavelength related? - Answersthey are inversely
related
-the smaller the wavelength, the higher the photon energy
what does chlorophyll do? - Answersabsorb light of particular wavelengths
what is a substance's absorption spectrum? - Answersit is the pattern of absorption by the substance
what did we find in the lab? - Answers-there was a high absorbance at lower wavelengths bc higher
energy
-there was low absorbance & high reflective at higher wavelengths
what would be the consequences to photosynthesis if the chlorophyll molecule were transparent to
light? - Answersthey would absorb a lot of light at all wavelengths
what would the absorption spectrum of a colorless, transparent substance look like? - Answersa graph
with a straight line
what major property of chlorophyll a, chlorophyll b, and carotenoids did we take advantage of in order
to separate them from one another? - Answerstheir solubility in different solutions
what are the relative solubilities of carotenoids and chlorophylls a & b in petroleum ether & 95%
ethanol? - Answers-carotenoids are more soluble in 95% ethanol
-chlorophylls are more soluble in the petroleum ether
what are the relative solubilities of chlorophylls a & b in petroleum either and 92% methanol? -
Answers-chlorophyll a is more soluble in petroleum ether
-chlorophyll b is more soluble in 92% methanol
chlorophyll is green; how does this relate to its absorption spectrum? - Answerschlorophyll a & b have
absorption peaks in the blue & red regions
what is photosynthesis? - Answersthe conversion of light energy into useful biological energy (ATP) and
"reducing power" that drives the conversion of carbon dioxide and water into sugar
what carries out the process of photosynthesis? - Answersphotosynthetic autotrophs
what is the first step of photosynthesis? - Answersthe absorption of visible light photons by chlorophyll
what is chlorophyll? - Answerspigment that makes plants green
what are photons? - Answers"packets" of light energy
how is the energy associated with a photon and its wavelength related? - Answersthey are inversely
related
-the smaller the wavelength, the higher the photon energy
what does chlorophyll do? - Answersabsorb light of particular wavelengths
what is a substance's absorption spectrum? - Answersit is the pattern of absorption by the substance
what did we find in the lab? - Answers-there was a high absorbance at lower wavelengths bc higher
energy
-there was low absorbance & high reflective at higher wavelengths
what would be the consequences to photosynthesis if the chlorophyll molecule were transparent to
light? - Answersthey would absorb a lot of light at all wavelengths
what would the absorption spectrum of a colorless, transparent substance look like? - Answersa graph
with a straight line
what major property of chlorophyll a, chlorophyll b, and carotenoids did we take advantage of in order
to separate them from one another? - Answerstheir solubility in different solutions
what are the relative solubilities of carotenoids and chlorophylls a & b in petroleum ether & 95%
ethanol? - Answers-carotenoids are more soluble in 95% ethanol
-chlorophylls are more soluble in the petroleum ether
what are the relative solubilities of chlorophylls a & b in petroleum either and 92% methanol? -
Answers-chlorophyll a is more soluble in petroleum ether
-chlorophyll b is more soluble in 92% methanol
chlorophyll is green; how does this relate to its absorption spectrum? - Answerschlorophyll a & b have
absorption peaks in the blue & red regions
