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Over [174]
3 years ago
15

Because oxygen is more electronegative than hydrogen, the water molecule and the covalent bonds that form it are described as __

________.
Biology
1 answer:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

Polar/ Hydrophilic

Explanation:

Electronegative atoms is the tendency of an element to attract a pair of electrons to itself.

Since water, H2O is composed of H+ and O2-, oxygen os the most electronegative element and this is because of it incomplete outer shell i.e valence electron is 6 (4 electrons in its p- orbital) and so it needs a pair of electrons to become stable, hence its high affinity for electrons.

Hydrogen on the other hand cannot lose its only electron and it has one electron in its s orbital. So there is sharing of these electrons, hence the definition of covalent bond.

A polar covalent bond is formed because the electronegativity difference between Oxygen a d Hydrogen is not negligible.

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7 0
2 years ago
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IgorC [24]

Answer:

12 molecules of ATP can be made from one molecule of acetyl CoA.

Explanation:

If one molecule of acetyl CoA enter TCA cycle then it result in the formation of 3 molecules of NADH,1 molecule of FADH2 and 1 molecule of GTP that is equivalent to 1 molecule of ATP.

                        Now the reducing equivalent such as NADH and FADH2 enters electron transport chain and get oxidized to regenerate NAD+ and FAD along with ATP. 1 molecule of NADH produces 3 molecules of ATP whereas 1 molecule of FADH2 produces 2 molecules of ATP.

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As a result total 12 molecules of ATP is by the oxidation of 1 Acetyl CoA  by TCA cycle .

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