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
Kazeer [188]
3 years ago
14

g The Electron Transport Complex (ETC) consists of four proteins. How many of these proteins directly contribute to the proton g

radient by moving protons across the membrane?
Biology
1 answer:
vladimir2022 [97]3 years ago
6 0

Answer:

Three proteins directly contribute to the proton gradient by moving protons across the membrane

Explanation:

The Electron transport chain is a group of proteins and molecules incrusted in the internal mitochondrial membrane and organized into four complexes, I, II, III, and IV. These complexes contain the electron transporters and the enzymes necessary to catalyze the electron transference from one complex to the other. Complex I contains the flavine mononucleotide -FMN- that receives electrons from the NADH. The coenzyme Q, located in the lipidic interior of the membrane, conducts electrons from complex I and II to complex III. The complex III contains cytochrome b, from where electrons go to cytochrome c, which is a peripheric membrane protein. Electrons travel from cytochrome c to cytochromes a and a3, located in the complex IV. Finally, they go back to the matrix, where they combine to H+ ions and oxygen, to form the water molecule. As electrons are transported through the chain, protons are bombed through three proteinic complexes from the matrix to the intermembrane space. These are complexes I, III and IV.  

You might be interested in
If you want to see something in fine detail, you should focus the light on which part of your retina?
Dmitry_Shevchenko [17]

If you want to see something in fine detail, you should focus the light the cornea. The lens works together with the cornea to focus light correctly on retina.

When light hit on retina special cells called photo receptors turn the light into electrical signals. The lens are the clear part of eyes behind the iris that help to focus light and image on retina to see something clearly.Lens is the important part of eye when it comes to focusing light so that we can see perfect clear image.

The retina is the most sensitive part which can effect by more light because retina convert incoming light into electrical impulse.

To learn more about Retina here

brainly.com/question/13993307

#SPJ4

4 0
2 years ago
An ice cube, a glass of cold water, and a swimming pool are each exposed to the samme amount of sunlight on a hot day. after fiv
Nikolay [14]
B, I think, because by saying that the ice cube has a lower heat capacity means that it cannot stead heat enough to last longer then the water and pool.
7 0
3 years ago
Which of these methods of waste management is most likely to release
Paul [167]

Answer: Incinerator will be ur answer

5 0
2 years ago
Mary bought three flowering plants for her garden. The first one has red tubular flowers filled with nectar; the second one has
uranmaximum [27]
I would say that the first flower attracts birds etc. t go and drink it's nectar (also I know that humming birds are attracted to red), and thus spread it's pollen. The second flower most likely attracts bees seeing how t is also sweetly scented, but has no nectar. This must mean that it only has pollen, which bees are great at spreading! I have no clue about the last one....Maybe bugs or bats?? Those are the only other pollinators I know of. It could possibly be that there is no pollinator for the third flower and it just tries to keep animals and insects from eating it with it's shape and odor and just relays on the wind for pollination.<span />
6 0
3 years ago
Which is considered to be a process by which electrons aregenerally
Serhud [2]

Answer: Catabolism

Explanation:

The addition of electrons to the compound is called as the reduction reaction. On the other hand, the removal of electrons is called as the oxidation.

The catabolism is a process by which electrons are removed from the compound. This is a oxidation reaction.The anabolism is a process by which electrons are added to the compound. This is the reduction reaction.

The anabolism is a process of formation of new complex substance from simple ones. This is a constructive process. The catabolism is a process of formation of simple substance from break down of complex ones. This is a destructive process.

7 0
3 years ago
Other questions:
  • The cell also lacks f factors and f plasmids. upon its death, this bacterium should be able to participate in _____. transformat
    8·1 answer
  • True or False. Humans produce waste but other animals do not.
    8·2 answers
  • How long ago did homo sapiens appear
    14·1 answer
  • If a substance is not able to be separated by physical means but is able to be separated by chemical means, it is a(n)
    11·2 answers
  • What does the D in DNA stand for?
    15·2 answers
  • What is a pikachurin
    6·1 answer
  • How do strides indicate whether the walker is a male or female?
    13·1 answer
  • Explain the relationship between autotrophs heterotrophs and decomposers In 4 to 5 sentences
    10·1 answer
  • PLSSS HELP IF YOU TURLY KNOW THISSS
    12·1 answer
  • A new canal built through the desert separates a population of tortoises into two new populations. After two hundred
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!