Lehninger Principles of Biochemistry
7th Edition
ISBN: 9781464126116
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 20, Problem 13P
Summary Introduction
To determine: Whether NADPH is produced in the process where isolated spinach chloroplasts evolve oxygen when illuminated in the presence of potassium ferricyanide.
Introduction:
The photosynthesis is a process in which the green plants and algae obtains their nutrients. This process takes place in the chloroplast where chlorophyll pigments are molecules present. Light reaction takes place in thylakoid molecules of the chloroplast. The end product of the light reaction is the formation of ATP and NADPH, which is an energy storing molecule that together helps in driving the Calvin cycle in stroma of chloroplast.
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Relative Transmittance
0.995
0.99
0.985
0.98
Please draw the structure that is consistent with all the spectral data below in the box and
alphabetically label the equivalent protons in the structure (Ha, Hb, Hc ....) in order to assign all the
proton NMR peaks. Label the absorption bands in the IR spectrum indicated by the arrows.
INFRARED SPECTRUM
1
0.975
3000
2000
Wavenumber (cm-1)
1000
Structure with assigned H peaks
1
3
180 160 140 120
100
f1 (ppm)
80 60
40
20
0
C-13 NMR
note that there are 4
peaks between 120-140ppm
Integral values equal
the number of
equivalent protons
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
fl (ppm)
Calculate the pH of 0.0025 M phenol.
In the following reaction, the OH- acts as which of these?
NO2-(aq) + H2O(l) ⇌ OH-(aq) + HNO2(aq)
Chapter 20 Solutions
Lehninger Principles of Biochemistry
Ch. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35DAP
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- The Ka for lactic acid is 1.4 x 10-4. Find the pH of a buffer made from 0.066 M lactic acid and 0.088 M sodium lactate.arrow_forwardZaitsev's Rule 3) (a) Rank the following alkenes in order of decreasing stability. most stable A B C D > > > (b) Rank the following carbocations in order of decreasing stability least stable B C Darrow_forwardCalculate the pH of 0.25 M acetic acid.arrow_forward
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