The image below shows ubiquinone. Shaded in yellow is the isoprenoid side chain, which remainsunchanged during the electron transport chain. Despite this, what function does it serve?CH3(CH₂-CH=C-CH₂) 10-HH3COH3COIDOOCH3--Select one:a. It is hydrophobic, allowing the molecule to be lipid-soluble so that it can diffuse through the membrane between complexe.b. It is hydrophilic, allowing the molecule to be water-soluble and diffuse in the intermembrane space between complexesC. It is hydrophobic, allowing successive molecules to cluster together at complex Id. It is hydrophilic, allowing optimal interaction in the matrix with NADH at complex IReport question issue Notes +14:27 -CO

Ubiquinone is present in the mitochondria of all eukaryotic molecules. this molecule is fat-soluble…

Answered: The image below shows ubiquinone.…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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1 3 6 HO-C-H CH₂OH c=0 H-C-OH I H-C-OH CH₂OH H Н Н N-C-C CH =0 он HC CH2 CH3 4 но TII H2N-C-C-ОН 7 CH2 | ОН CH₂OH ОН о о ОН ОН 8 5 2 0 0=P-0 о NH₂ N OH
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ATP Synthase contains with in it one of the most conserved residues in a protein we know. Asp 61. This is the amino acid that carries the proton. a. Why would this residue be so highly conserved? What would happen if a mutation occurred that would change Asp to Ala? b. At the end of one spin of ATP synthase when the proton is in a position to leave to the intermembrane space the Asp comes into close contact with another very highly conserved residue Arg 210. Explain how this Arg residue could help the proton attached to Asp to leave. Hint think pKa Answer both parts with good explanation
The three irriversible reactions in glycosis is : Hexoknase, PFK-1 and Pryvate kinases. they are all enzymes, why these three enzymes are irriversible? the explaination below is not very understandble. "Hexokinase: This enzyme catalyzes the conversion of glucose to glucose-6-phosphate. This reaction consumes ATP and traps glucose inside the cell by converting it into a charged and phosphorylated form. Phosphofructokinase-1 (PFK-1): This enzyme catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate. This reaction is the committed step of glycolysis, and it is also the main regulatory point of the pathway. PFK-1 is allosterically inhibited by ATP and citrate and activated by AMP and fructose-2,6-bisphosphate. Pyruvate kinase: This enzyme catalyzes the conversion of phosphoenolpyruvate (PEP) to pyruvate, producing ATP. This reaction is the last step of glycolysis and is also highly regulated. Pyruvate kinase is allosterically activated by fructose-1,6-bisphosphate…
Which of the following is incorrect about the chymotrypsin mechanism? a. When His removes a proton from Ser, it is acting as an acid b. Asp does not act as an acid c. Asp, through a H-bond, holds His in the proper orientation Od. After being deprotonated, Ser acts as a nucleophile
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Which of the following is TRUE about cytochrome c protein? As a part of the ETC chain, it changes conformation to allow H+ ions to flow out of the matrix. It is found on the surface of the inner mitochondrial membrane and, therefore, contains start-transfer and/or stop-transfer sequences. With assistance from Bax, it can move out of the mitochondria and into the cytosol. It is considered a symporter because it is involved in electron transport. It is able to puncture holes in the plasma membrane to initiate apoptosis.
Which of the following polypeptides CANNOT be phosphorylated? a. O b. O C. O d. O e. -LIYLIA- -ASILD- -ILTALD- -DLTYLA- -NDLALP-
Human lysozyme is an enzyme active in lysosomes. At approximately what pH would you expect this enzyme to display maximal activity? Question options: enzyme activity should be reasonably similar at all of these pH values 9 7 5 11
in one of the reactions in the electron transport chain, complex I transfer electrons to coenzyme Q. which molecule is reduced and which is oxidized in this reaction? a. complex I is reduced b/c it loses electrons, and Q is oxidized b/c it gains electrons b. complex I is oxidized b/c it loses electrons, and Q is reduced b/c it gains electrons c. complex I is reduced b/c it gains electrons, and Q is oxidized b/c it loses electrons d. complex 1 and Q are both oxidized b/c elections are moved from one molecule to the other
about ATP synthase [Cellular Respiration] Which of the following interactions provides the mechanical energy needed to promote ATP production? Non-polar interaction Salt bridge formation Polar interaction : Attractive Polar interaction : Repulsive

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