In cells exposed to the respiratory toxin antimycin A, coenzyme Q (Q/QH2) will be in the ___________________ state.
A) Reduced
B)Oxidized
In cell exposed to the respiratory toxin antimycin A , coenzyme Q ( Q/QH2) will be in the reduced state.
As antimycin A disrupts the flow of electrons from cytochrome b to cytochrome c in complex III, cytochrome c can be reudced but not oxidised.
Please refer the above chat it will help you.
In cells exposed to the respiratory toxin antimycin A, coenzyme Q (Q/QH2) will be in the...
does it work now 7. Predict the relative oxidation state (oxidized or reduced) of Q and heme c, c1, Cua, and Cup for mitochondria treated with rotenone or antimycin A. Rotenone binds to Fe-S clusters in Complex I preventing electron transfer to Q. Antimycin A binds to one of the Q sites in Complex III preventing electron transfer from heme by to Q. Assume that electrons are continuously flowing from NADH & FADH2. Rotenone Antimycin A heme c1 Q (in...
pLEASE HELP BIOCHEM 2a Predict all of the following that are consequences of withdrawing oxygen given constant supply of NADH. may have more than one answer a. Pool of coenzyme Q becomes fully reduced. b. recycling of NAD+ continues indefinitely c. rate of NADH oxidation becomes zero owing to a lack of oxidized coenzyme Q(Q) to accept electrons d.pool of cytochrome C becomes fully oxidized (Cyt Cox). 2.b Choose all the following that are characteristic of Complex 3. a. recycles...
biochemistry I treat epithelial cells with different inhibitors of the electron transport chain, and then measure the level of ATP production and ratio of reduced ubiquinone (QH2) to oxidized ubiquinone (Q) in these treated cells. My data is shown in the table. ATP produced Drug (% Control) QH,:Q None 100 10 A 2 0.0001 B 80 5 a. MOST LIKELY, which compound interferes with the transfer of electrons to oxygen? b. What is the BEST explanation to your answer to...
Part N What is the AE.' for the oxidation of succinate to fumarate by coenzyme Q under standard conditions? Express your answer using two decimal places. Η ΑΣΦ ? AE0' = V Submit Request Answer Redox Pair (oxidized form + reduced form) Number of electrons Reduction Potential, Volts Acetate → pyruvate 2 -0.70 Succinate → a- ketoglutarate 2 -0.67 Acetate → acetaldehyde 2 -0.60 3-phosphoglycerate + glyceraldehyde- 3-P -0.55 N a-ketoglutarate → isocitrate 2 -0.38 NAD+ + NADH 2 -0.32...
1)Where on the electron carrier Coenzyme Q are electrons "carried"? 2)Coenzyme Q and cytochrome C are similar in that they are both mobile electron carriers that act as part of the electron transport chain. However, they are different in most other ways. In one sentence for each, explain how they differ in their: A) structural composition (i.e. what kinds of molecules are they?) B) subcellular localization C) electron-carrying capacity
Some bodily surfaces that are directly exposed to the environment, such as the respiratory and digestive tracts, have no form of barrier protection. a. True b. False
The electron transport chain (ETC), or respiratory chain, is linked to proton movement and ATP synthesis. Select the statements that accurately describe the electron transport chain Choose all that apply. Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space The outer membrane of mitochondria is readily permeable to small molecules and hydrogen ions. Prosthetic groups, such as iron-sulfur centers, are directly involved with electron transfer. Electron carriers in the ETC include ubiquinone...
This is for biochem. Please answer and explain why? As a representation of the respiratory chain, what is wrong with this picture? There are 4 deliberate errors. Select all that apply NADHFAD ног Coa 1. NADH is oxidized by FMN, not FAD. 2. NADH is oxidized by CoQ, not FAD. 3. Reduced flavin (FADH2 or FMNH2) is oxidized by CoQ, not CoQH2. 4. O2 is reduced to H2O, not H202 5. Cyt c, accepts e-from cyt a-a3, and is then...
Explain how a superantigen toxin non-specifically stimulates T cells. Why does non-specific stimulation of T cells make a person sick? Explain the molecular mechanisms by which quorum sensing regulates TSST-1 expression. How do superantigens promote immune evasion? Describe impacts on B cells and T cells Why is toxic shock syndrome associated with high absorbency tampons and menstruation?
Which of the following could explain why transfer of electrons from FADH2 to Coenzyme Q (CoQ) is not coupled to proton transfer, but transfer from NADH to Coenzyme Q is? Select one: a. FADH2 donates more electrons than NADH to the electron transport chain. b. Because FADH2 has higher affinity for electrons than Coenzyme Q c. Because FADH2 is a higher energy carrier than NADH d. Because the transfer of electrons from FADH2 to CoQ does not release enough energy....