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olga55 [171]
4 years ago
10

NADH and FADH2 are both electron carriers that donate their electrons to the electron transport chain. The electrons ultimately

reduce O2 to water in the final step of electron transport. However, the amount of ATP made by electrons from an NADH molecule is greater than the amount made by electrons from an FADH2 molecule. Why is more ATP made per molecule of NADH than per molecule of FADH2?
Biology
1 answer:
maria [59]4 years ago
8 0

Answer:

Explanation:

NADH and FADH2 are both electron carriers of the electron transport chain. NADH gives up its electrons starting from Complex I, which has a higher energy level compared to other complexes. Energy is given off to pump protons across the membrane by the time electrons are transferred to ComplexIII. More electrons are pumped across the membrane as electrons move to Complex IV. Because NADH commenced giving up its electrons from Complex I (higher energy level complex), more protons are pumped across the membrane gradient, which enables ATP synthase with more power to produce 3ATP molecules per NADH molecule.

On the other hand, 2 molecules of ATP are generated by FADH2 because it starts by giving up its electrons to ComplexII. It missed a chance to pump protons across the membrane when it passed Complex I. By the time the electrons reach Complex IV, less protons have been pumped. The lesser the protons to power ATP synthase, the lesser the ATP molecules produced.

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Lucy got a new car for her birthday so she went for a long drive. First
Anna35 [415]

Answer: 31,000 meters (m) or 31 kilometers (km)

Explanation:

6,000 meters + 4,000 meters + 12,000 meters + 8,000 meters=31,000 meters

Simplified explanation: 6+4+12+8=31

3 0
3 years ago
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riadik2000 [5.3K]

The pathway which starts from phytoplankton, crustacean Nauplii, crab larvae and ends with grey whale is the pathway which has maximum number of trophic levels.

<h3></h3><h3>What is trophic levels?</h3>

The trophic level of an organism is the position that it occupies in a food web or in other words, the trophic level of an organism is the number of steps it is from the start of the chain.

In this graph, the pathway starts from phytoplankton which is eaten by crustacean Nauplii. This crustacean is again eaten by crab larvae and finally by the grey whale. This has maximum number of trophic levels as compared to other pathway.

Learn more about trophic levels here: brainly.com/question/1236573

5 0
2 years ago
Read 2 more answers
A cell with 80 chromosomes undergoes meiosis. How many chromosomes are found in the daughter cells? How many daughter cells are
Dafna11 [192]

Answer:

1.) 80 chromosomes in each of the daughter cells. 2.) Two daughter cells are produced. 3.) The daughter cells are identical.

Explanation:

1.) In mitosis, a parent cell divides to form two daughter cells through the mitosis phases creating the same amount of chromosomes for each daughter cell as the parent cell.

2.) The parent cell divides to form the two daughter cells in cytokinesis.

3.) The daughter cells are direct replicas of the chromosomes in the parent cell unless there is a mutation in the DNA when it is being copying.

6 0
3 years ago
In 1918, the Russian Tsar Nicholas II was deposed, and he and his family were reportedly executed and buried in a shallow grave.
GaryK [48]

Answer:

By making a paternity test by Short tandem repeats, or STRs (microsatellites).

Explanation:

Short tandem repeats, or STRs, are microsatellites consisting of repeated sequences of 2 to 6 base pair length monomers  in tandem, and most of them have a high degree of polymorphism. Half of an individual microsatellites are inherited by each parent, and they can be assesed by PCR amplification and further electrophoresis.

In this case, you would try to recover a bone from the remainings of the woman, the Tsar and his wife, since the rest of the latest were in a shallow grave with many different individuals. Preferably, you should manipulate this samples in an ancient DNA facility (aDNA) with proper techniques. You clean the bone samples, drill them, and from internal bone powder make a DNA extraction. After this, you perform a series of PCR targeting a panel of STRs, and electrophoresis. If the woman claim is true, half of her microsatellites should have correspondence with the Tsar, and half with the ones of his wife.

4 0
4 years ago
Ultraviolet light has what effect on the bilirubin molecule?
Slav-nsk [51]
Degrades the molecule
stabilizes the molecule
<span>increases the molecular concentration</span>
3 0
3 years ago
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