1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vlada [557]
2 years ago
11

In the reoxidation of QH2 by purified ubiquinone-cytochrome c reductase (Complex III) from heart muscle, the overall stoichiomet

ry of the reaction requires 2 mol of cytochrome c per mole of QH2 because:
Chemistry
1 answer:
morpeh [17]2 years ago
4 0

Answer: Options related to your question is missing below are the missing options

a. cytochrome c is a one-electron acceptor, whereas QH2 is a two-electron donor.

b. cytochrome c is a two-electron acceptor, whereas QH2 is a one-electron donor.

c. cytochrome c is water soluble and operates between the inner and outer mitochondrial membranes

d. heart muscle has a high rate of oxidative metabolism, and therefore requires twice as much cytochrome c as QH2 for electron transfer to proceed normally.

e. two molecules of cytochrome c must first combine physically before they are catalytically active.

answer:

cytochrome c is a one-electron acceptor, whereas QH2 is a two-electron donor. ( A )

Explanation:

The overall stoichiometry of the reaction requires 2 mol of cytochrome per mole of QH2 because a cytochrome is simply a one-electron acceptor while QH2 is not a one-electron donor ( i.e. it is a two-electron donor )

An electron donor in a reaction is considered a reducing agent because it donates its electrons to another compound thereby self oxidizing itself in the process.

You might be interested in
Determine the pH of a 5x10^-4 M solution of Ca(OH)2
miss Akunina [59]
Ca(OH)₂ ==> Ca²⁺ + 2 OH<span>-   

Ca(OH)</span>₂ is <span>strong Bases</span><span>

</span>Therefore,  the [OH-] equals 5 x 10⁻⁴ M. For every Ca(OH)₂ you produce 2 OH⁻<span>.
</span>
pOH = - log[ OH⁻]

pOH = - log [ <span>5 x 10⁻⁴ ]

pOH = 3.30

pH + pOH = 14

pH + 3.30 = 14

pH = 14 - 3.30

pH = 10.7

hope this helps!</span>
5 0
3 years ago
Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el
Dovator [93]

Answer: 406 hours

Explanation:

Q=I\times t

where Q= quantity of electricity in coloumbs

I = current in amperes = 39.5 A

t= time in seconds = ?

The deposition of copper at cathode is represented by:

Cu^{2+}+2e^-\rightarrow Cu

96500\times 2=193000 Coloumb of electricity deposits 1 mole of copper

i.e. 63.5 g of copper is deposited by = 193000 Coloumb

Thus 19.0 kg or 19000 g of copper is deposited by = \frac{193000}{63.5}\times 19000=57748032 Coloumb

57748032=39.5\times t

t=1461975sec=406hours    (1hour=3600s)

Thus it will take 406 hours to plate 19.0 kg of copper onto the cathode if the current passed through the cell is held constant at 39.5 A

3 0
3 years ago
When naming ionic compounds the ______________ is named first.
grandymaker [24]
The answer is metal. Metals are always named first in ionic compounds, like KNO3 for example. I hope this helps!
7 0
3 years ago
As you move to a higher elevation (e.g. in the mountains), the air pressure drops significantly. In turn,
soldi70 [24.7K]
The answer is C ( The evaporation rate of water increases at all temperatures causing an increase in volume.)                           
3 0
2 years ago
What is the simplest method of determining the composition of a compound?
kaheart [24]

Answer:

Chemical formulas tell you how many atoms of each element are in a compound, and <u>empirical formulas</u> tell you the simplest or most reduced ratio of elements in a compound. If a compound's chemical formula cannot be reduced anymore, then the empirical formula is the same as the chemical formula.

please give me brainliest

8 0
1 year ago
Other questions:
  • How can you build an electromagnet?
    12·1 answer
  • I make my cup of coffee in the morning by pouring boiling water over ground-up coffee beans held in a special piece of paper and
    6·1 answer
  • How old are the lunar highlands? 1. 1.8 to 2.6 billion years old 2. 3.1 to 3.8 billion years old 3. 4.0 to 4.3 billion years old
    9·2 answers
  • Which part of the factory is most similar to the nucleus of a living cell
    15·1 answer
  • How does increased carbon dioxide affects the flow of energy in a closed system
    14·1 answer
  • Is the path of electrons orbital or reactive?
    10·1 answer
  • What happened to the amount of products if temperature is decreased ?
    8·1 answer
  • Version: TAKEHOME
    12·1 answer
  • For a covalent bond to be polar, the two atoms that form the bond must have:.
    10·1 answer
  • Balance the N-14(d,n) nuclear equation for radioisotope production in PET. This means to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!