Logo
Home Study Material Contact Search
AI Chat FREE
  1. sciences
  2. biology
  3. because electron transport is coupled to adp phosp

Because electron transport is coupled to ADP phosphorylation, it is theoretically possible to drive electron backwards...

Free

50.1K

Verified Solution

Question

Biology

Because electron transport is coupled to ADP phosphorylation, itis theoretically possible to drive electron backwards in the chain,against the potential gradient, at the expense of ATP. Thismechanism has been observed in some organisms. Consider a bacteriumat 25 C that can transfer electrons from succinate to NAD+ by meansof the transport

Succinate + NAD+ = Fumerate + NADH + H+

If the intracellular concentration of phosphate is constant at10 mM, calculate the [ATP]/[ADP] ratio that would be required tomaintain the steady-state ratio of [NADH]/[succinate] = 0.010.Assume that the intracellular concentrations of fumerate and NAD+are equal.

Answer & Explanation Solved by verified expert
4.2 Ratings (706 Votes)

Succinate + NAD+ = Fumerate + NADH + H+

ATP hydrolysis takes place during this reaction,

ATP = ADP + Pi

Given: Steady state reaction, phosphate is constant at 0.01 M, [NADH]/[succinate] = 0.01 M

Rate = [ADP] [Pi] = [FUMARATE] [NADH]  

            ATP              [NAD+] [SUCCINATE]

Hence: NAD+ = FUMARATE, and [NADH]    = 0.01 M

                                                  [SUCCINATE]

So, [ADP] [Pi] = 1 (ie, 0.01 divided by 0.01)

        ATP

Rearrange: [ATP] = 1
                 [ADP] [Pi]
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Geometry
1.2K views

For the following right triangle find the side length x Round your answer to the...

General Management
1.2K views

Question: What is Control Measures? Explain 5 types of control measures with examples

Geometry
1.2K views

3 6 Question 10 10 points G H CON If m GHI measure of J...

Geometry
1.2K views

QR is tangent to circle P at point Q P 53 D R What is...

Statistics
1.2K views

The figure shows three forces acting on a pin supported rectangular plate at points A...

Statistics
1.2K views

Let X denote the life length in hours of a battery Suppose X is known...

Algebra
1.2K views

28 Q What is the direction angle of the blue vector What is the bearing...

Accounting
1.2K views

Suppose a seven-year, $1000 bond with an 8% coupon rate and semiannual coupons is trading...

Accounting
1.2K views

Exercise 133 (Algo) Make or Buy Decision [LO13-3] Troy Engines, Ltd., manufactures a variety of...

Accounting
1.2K views

Determine the ending cash balance for the November cash budget if the beginning cash balance...

Accounting
1.2K views

El estado financiero actual de XYZ Ltd. muestra una deduccin de $20,000 de gastos legales...

Finance
1.2K views

Shares of XYZ, a non-dividend paying stock, will sell for either $108 or $80 in...