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Arlecino [84]
3 years ago
15

When an organism such as a yeast lives by fermentation, it converts the pyruvate from glycolysis into a different compound, such

as alcohol. Why doesn't it secrete the pyruvate directly? Group of answer choices The conversion yields one NADH per pyruvate molecule. A buildup of pyruvate in the surrounding environment would be too toxic. The conversion is needed to regenerate the molecules needed for glycolysis. The conversion yields 32 ATP per pyruvate molecule.
Biology
1 answer:
Dahasolnce [82]3 years ago
4 0

Answer:

The conversion is needed to regenerate the molecules needed for glycolysis

Explanation:

Fermentation is a metabolic process by which microorganisms generate ATP by the anaerobic (without oxygen) degradation of organic nutrients. Fermentation allows to microorganisms convert carbohydrates into alcohol or acid. During glycolysis, two NAD+ molecules are reduced and glucose molecules are split into two pyruvate molecules, thereby producing two NADH molecules and two ATP molecules. During fermentation, pyruvate molecules are metabolized to different compounds because the energy stored in the pyruvate molecules is unavailable to the cell. In fermentation, NADH from glycolysis is oxidized back to NAD+ by being used to reduce pyruvate or a pyruvate derivative.

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Which of the following describes the difference between nitrogen-14 and nitrogen-15? ( point)
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Answer:

D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons

Explanation:

In an atom, number of electrons is equal to the number of protons.  And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number  of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.

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solniwko [45]

Answer:

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Explanation:

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Answer:

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Explanation:

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