Ms. Brundage buys a fancy new plant, and brings it home to replace her plastic ones. The action spectrum of the plant's leaves is found in Figure 1 below. Unfortunately it is winter and there is very little natural light. The local hardware store offers her two lighting choices: halogen light or cool white LED. After a little research, she discovers the spectrum of each type of light, as shown in Figure 2. a) Which type of light should Ms. Brundage purchase? Explain. b)The salesperson assures her that her plant most likely will be able to grow under either type of light. Given what you know about plant pigments and photosynthesis, how could this be possible? Explain

Ms. Brundage buys a fancy new plant, and brings it home to replace her plastic ones. The action spectrum of the plant's leaves is found in Figure 1 below. Unfortunately it is winter and there is very little natural light. The local hardware store offers her two lighting choices: halogen light or cool white LED. After a little research, she discovers the spectrum of each type of light, as shown in Figure 2. a) Which type of light should Ms. Brundage purchase? Explain. b)The salesperson assures her that her plant most likely will be able to grow under either type of light. Given what you know about plant pigments and photosynthesis, how could this be possible? Explain

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter8: Photosynthesis

Section: Chapter Questions

Problem 13TYK: Discuss Concepts Like other accessory pigments, the carotenoids extend the range of wavelengths...

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PART III - Table 3: Absorption Spectrum Data for Spinach Chloroplast Extract Absorbance Wavelength 620 nm 0.147 640 nm 0.058 660 nm 680 nm 700 nm 720 nm Wavelength 380 nm 400 nm 420 nm 440 nm 460 nm 480 nm Absorbance 0.759 0.923 Questions: 1.095 1.075 0.833 10.520 Wavelength 500 nm 520 nm 540 nm 560 nm 580 nm 600 nm 0.054 0.066 0.094 123 Graph: Plot the absorbance data on the graph below. Remember TAILS. Absorbance · 163 ·19 4 •514 · 166 1012 ·003 1. Your graph should have two "peaks." At the highest of the two, what wavelength was most strongly absorbed by the chloroplast pigments? What wavelength corresponds the top of the second peak? What wavelength was least absorbed by the chloroplast pigments? 2. Based on your observations, which wavelength (color) of light might be expected to generate the lowest rate of photosynthesis? 91
If you need 2.5 mg/liter, 2,4-D in 1 liter of medium and the stock solution of 2,4-D contains 10 mg/100 ml, how much stock solution do you need? why BAP is preferred over other cytokinin during commercial plant tissue culture
Discuss Concepts Like other accessory pigments, the carotenoids extend the range of wavelengths absorbed in photosynthesis. They also protect plants from a potentially lethal process known as photooxidation. This process begins when excitation energy in chlorophylls drives the conversion of oxygen into free radicals, substances that can damage organic compounds and kill cells. When plants that cannot produce carotenoids are grown in light, they bleach white and die. Given this observation, what molecules in the plants are likely to be destroyed by photooxidation?
Which part of the light-independent reactions would be affected if a cell could not produce the enzyme RuBisCO?
3.1 Given these images focused under different objectives, calculate the size of an onion cell and a waterweed cell. Show your calculations. TREVISIONMIO viewed in HPO A. onion Size: Size: Calculation: mm um viewed in LPO B. waterweed Size: Size: Calculation: _mm um
The visible spectrum of B-carotene (C40oHs, MW 536.89, the orange pigment in carrots) dissolved in hexane shows intense absorption maxima at 463 nm and 494 nm, both in the blue-green region. Because light of these wavelengths is absorbed by B-carotene, we perceive the color of this compound as that of the complement to blue-green, namely red-orange. B-Carotene Amax 463 nm (log e 5.10); 494 nm (log e 4.77) Calculate the concentration in milligrams per milliliter of B-carotene that gives an absorbance of 1.8 at 463 nm.
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Cyclic photophosphorylation uses two photons to generate one ATP. If the AG of ATP hydrolysis is -50 kj/mol. What is the percent efficiency of cyclic photophosphorylation? F =96.5 kj/mol*V. Use c AG = -nFAV ⒸShow Transcribed Text to solve.
Anthocyanins are another type of plant pigment that are purple or red. Say you run a chromatography experiment using the same setup as you did in this lab, and you find that anthocyanins do not move from the line of origin. Assuming the solvent traveled the same distance as in your experiment (D in Table 1 above), what is the Rf value of anthocyanin?
Example 14.6 The oxygen requirement for cell growth in glueose can be represented by the following equation (Mateles, 1971) 32NC+8(Nh2)+16(No2) Fx/sM +yo2 – 2.67yc + 1.714YN2 – 8y H2 ro2 = In which ro2 is the oxygen required for each gram of cells produced, N stands for no. of atoms present in each molecule substrate, y stands for mass fractions and M is the MW of the substrate. The yeast cell may be considered to be CH1.800.5NO.2. Calculate rO2 if the yield factor (Yx/s) is 0.46g of cells produced for each gram of substrate consumed.
Antifungal Activity of Red Dragon Peel (Hylocereus polyrhizus)ⓒ Rudi Hendra et al 2020 IOP Conf. Ser.: Mater. Sci. Eng. 833 012014 STATE THE HYPOTHESIS (In if-then format): Plants, when extracted, can produce dyes and the extracts have been used for different purposes such as the textile or food industry [1]. One potential plant that can be used as a natural dye is dragon fruit (Hylocereus cacti) or by another name Pitaya. Wybraniec and coworkers reported that dragon fruit has a potential as a source to produce red pigment and it's called betalains [2]. Betalain is a water-soluble pigment that gives color to flowers and fruits. Betalain pigments are divided into two groups, namely betacyanin which produces purplish red and betaxanthin which produce yellow-orange colors [2, 3]. In the dragon fruit peel, it is also containing pigments which are usually only discarded as food waste and have not been used optimally. This is very unfortunate because the fruit of the dragon fruit itself has…
In the biosynthesis of heme, ring cyclization, isomerization, and decarboxylation reactions take place. Identify the potential intermediates and show the electron flow in the following diagram. HO,C R1 HO2C- -R2 NH HN- но- NH HN- HO2C R R2 unstable intermediate Uro'gen II HO2C Me Me NH HN- -CO2H HN NH Me Me HO2C CO2H Coproporphyrinogen II