7. Review your data from Part III of this lab on the absorption spectrum of chloroplast...
7. Review your data from Part III of this lab on the absorption spectrum of chloroplast extract and answer the following questions:
a. At what wavelength (and color) of light do you think the rate of photosynthesis is highest?
b. At what wavelength (and color) of light do you think the rate of photosynthesis is lowest?
c. The wavelengths (colors) of light that are absorbed most by chloroplasts are ____________ and _____________________.
d. What molecule in the chloroplast absorbs this light?
e. Into what two major processes can photosynthesis be divided? What is the purpose of each process? See text of lab manual.
f. What is the specific purpose of absorbing light? Be more specific than answering photosynthesis!
8. Why are plants green?
Homework Answers
a. At what wavelength (and color) of light do you think the rate of photosynthesis is highest?
Red light
b. At what wavelength (and color) of light do you think the rate of photosynthesis is lowest?
Green light
c. The wavelengths (colors) of light that are absorbed most by chloroplasts are ____________ and _____________________.
blue (430nm) and red (662nm)
d. What molecule in the chloroplast absorbs this light?
Chlorophyll a
Add Answer to:
7. Review your data from Part III of this lab on the absorption
spectrum of chloroplast...
Is chlorophyll the only light-absorbing pigment in the chloroplast? How might this affect the observed absorption...
Is chlorophyll the only light-absorbing pigment in the chloroplast? How might this affect the observed absorption spectrum of chlorophyll versus the entire chloroplast? Is light absorbance the same thing as rate of photosynthesis? What is the difference between an Absorption Spectrum and an Action Spectrum?
I need the graph exactly as shown in the lab manual please 104 Biology 101L -...
I
need the graph exactly as shown in the lab manual please
104 Biology 101L - LAB 9 Paper Chromatography Schalthe n the strip Carones • • chlorophylla chlorophyll. 2. What three factors abied the pigments in the extract to move at different rates! Absorption Spectrum WAVELENGTH ABSORPTION APPROXIMATE COLOR WAVELLINGTM APPROXIMATE COLOR 400 0.399 Violet 560 Yellow LOSS Violet Yellow .02 .05 05 108 440 Violet 450 que Orange Orange Red 480 Blue 163 500 Green Red Red Green...
Chlorophyll a Absorption Spectrum of Visible Light Absorption of light (%) Which of the following wavelengths...
Chlorophyll a Absorption Spectrum of Visible Light Absorption of light (%) Which of the following wavelengths of light are not absorbed by chlorophyll a to power photosynthesis? Check all that apply. 430 nm 660 nm 530 nm 400 450 500 550 600 Wavelength (nm) 650 700 wavelength (nm) In a laboratory experiment, you take three plants and put them each under a lamp that mimics sunlight. You have three colored light filters that fit over each of the lamps: a...
Exercises After comparing the 100% cranberry juice absorption spectrum to the 100% apple juice aborption spectrum,...
Exercises After comparing the 100% cranberry juice absorption spectrum to the 100% apple juice aborption spectrum, do you think that apple juice contributes to the color of cranberry-apple juice at the Amax you selected? Why or why not? 2. When you look at cranberry juice and at apple juice, the colors that you see are the parts of the visible spectrum that is not absorbed by the juices. When you look at the absorption spectra of cranberry juice and apple...
Lab 7 7. In this experiment, DCPIP was used to indirectly measure photosynthetic rate. If you...
Lab 7 7. In this experiment, DCPIP was used to indirectly measure photosynthetic rate. If you were asked to design an experiment so that photosynthesis could be measured directly, what factors might you measure? 8. Compare your results for the absorption spectrum and the action spectrum. Explain any discrepancies between the wavelengths of light that are absorbed maximally and those wavelengths that cause the greatest photosynthetic activity. (Note that the wavelengths of light transmitted by each coloured filter can be...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. 1.a. What is the approximate value of the wavelength for the two other peaks? Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the color of the complex ion in solution. The energy of the transition occurring at...
Based on table 1, why Lmax shifts towards higher wavelengths when you go from ethylene to...
Based on table 1,
why Lmax shifts towards higher wavelengths when you go from
ethylene to b-carotene?
Figure 1. violet blue green yellow orange red purple 500 800 nm The greater the degree of conjugation of chromophores the greater the chance that the absorption of light will occur at higher wavelengths. Table 1 illustrates the effect of conjugation (where max gives the wavelength of maximum absorption): # of conjugated double bonds 175 Table 1. Compound Ethylene 1,3-Butadiene 1.3.5-Hexatricne B-Carotene 258...
In this experiment, you will measure the rate of photosynthesis in isolated chloroplasts using the dye...
In this experiment, you will measure the rate of photosynthesis
in isolated chloroplasts using the dye 2,6-dichloroindophenol
(DPIP). The transfer of electrons during the light-dependent
reaction results in the production of H+. This H+ ion can reduce
DPIP, changing its color from blue to clear. The color can be
quantitatively measured with a spectrophotometer. However, in this
experiment, you will qualitatively analyze your data.
Write a detailed conclusion for your experiment. How did light
affect the time it took for...
-Give a brief background on the role of pigments in photosythensis. -state your hypothesis. -finish with...
-Give a brief background on the role of pigments in
photosythensis.
-state your hypothesis.
-finish with stating the rationale for your hypothesis (how
did you arrive at these hypothesis?)
this is an introduction piece, so it doesn't need the results to
write the papee. introduction sections set up the background,
purpose, rationale, and hypothesis for a study.
Biod 20 PHOTOSYNTHESIS Background Plants harness the energy of the sun through a process called photosynthesis. The leaf is the plant organ that...
- White light spectrum – a. How does the spectrum of white light differ from the spectrum...
- White light spectrum – a. How does the spectrum of white light differ from the spectrum of hydrogen, neon and sodium? b. What color corresponds to 5.7 x 10-7 meters? _____________________________ - Hydrogen Emission Spectrum – There are several lines with colors and 3 lines which are white. The white lines are in the infrared region and not visible. a. Which line in the visible spectrum has the longest wavelength and lowest energy? ______________________ b. Figure 6.1 in the lab manual represents the Balmer...
I
need the graph exactly as shown in the lab manual please
104 Biology 101L - LAB 9 Paper Chromatography Schalthe n the strip Carones • • chlorophylla chlorophyll. 2. What three factors abied the pigments in the extract to move at different rates! Absorption Spectrum WAVELENGTH ABSORPTION APPROXIMATE COLOR WAVELLINGTM APPROXIMATE COLOR 400 0.399 Violet 560 Yellow LOSS Violet Yellow .02 .05 05 108 440 Violet 450 que Orange Orange Red 480 Blue 163 500 Green Red Red Green...
Chlorophyll a Absorption Spectrum of Visible Light Absorption of light (%) Which of the following wavelengths of light are not absorbed by chlorophyll a to power photosynthesis? Check all that apply. 430 nm 660 nm 530 nm 400 450 500 550 600 Wavelength (nm) 650 700 wavelength (nm) In a laboratory experiment, you take three plants and put them each under a lamp that mimics sunlight. You have three colored light filters that fit over each of the lamps: a...
Exercises After comparing the 100% cranberry juice absorption spectrum to the 100% apple juice aborption spectrum, do you think that apple juice contributes to the color of cranberry-apple juice at the Amax you selected? Why or why not? 2. When you look at cranberry juice and at apple juice, the colors that you see are the parts of the visible spectrum that is not absorbed by the juices. When you look at the absorption spectra of cranberry juice and apple...
Lab 7 7. In this experiment, DCPIP was used to indirectly measure photosynthetic rate. If you were asked to design an experiment so that photosynthesis could be measured directly, what factors might you measure? 8. Compare your results for the absorption spectrum and the action spectrum. Explain any discrepancies between the wavelengths of light that are absorbed maximally and those wavelengths that cause the greatest photosynthetic activity. (Note that the wavelengths of light transmitted by each coloured filter can be...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. 1.a. What is the approximate value of the wavelength for the two other peaks? Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the color of the complex ion in solution. The energy of the transition occurring at...
Based on table 1,
why Lmax shifts towards higher wavelengths when you go from
ethylene to b-carotene?
Figure 1. violet blue green yellow orange red purple 500 800 nm The greater the degree of conjugation of chromophores the greater the chance that the absorption of light will occur at higher wavelengths. Table 1 illustrates the effect of conjugation (where max gives the wavelength of maximum absorption): # of conjugated double bonds 175 Table 1. Compound Ethylene 1,3-Butadiene 1.3.5-Hexatricne B-Carotene 258...
In this experiment, you will measure the rate of photosynthesis
in isolated chloroplasts using the dye 2,6-dichloroindophenol
(DPIP). The transfer of electrons during the light-dependent
reaction results in the production of H+. This H+ ion can reduce
DPIP, changing its color from blue to clear. The color can be
quantitatively measured with a spectrophotometer. However, in this
experiment, you will qualitatively analyze your data.
Write a detailed conclusion for your experiment. How did light
affect the time it took for...
-Give a brief background on the role of pigments in
photosythensis.
-state your hypothesis.
-finish with stating the rationale for your hypothesis (how
did you arrive at these hypothesis?)
this is an introduction piece, so it doesn't need the results to
write the papee. introduction sections set up the background,
purpose, rationale, and hypothesis for a study.
Biod 20 PHOTOSYNTHESIS Background Plants harness the energy of the sun through a process called photosynthesis. The leaf is the plant organ that...
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