Explanation:
Splitting of the nucleus releases energy because the mass is converted to energy.
In nuclear reactions which involves alteration of the nucleus, mass and energy is equivalent.
- In this system, neither mass nor energy is conserved.
- The mass of an atom is concentrated in the nucleus.
- When the strong nuclear forces in the nucleus are broken, some masses are converted into energy.
- This why the splitting and even fusion of fusion of the nucleus releases energy.
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Cytochalasins are the fungal metabolites. They are able to bind to the actin filaments and cause polymerization in them. This also blocks the elongation of actins.
They block assembly and disassembly of actin microfilaments and binds to the ends of newly synthesized actin filaments also.
Answer: The correct option is D ( Cells undergo fermentation because pyruvate cannot be metabolized to proceed into the Krebs cycle).
Explanation:
Pyruvate dehydrogenase is the enzyme that converts pyruvate to acetyl CoA which enters the Krebs cycle in glucose metabolism. The deficiency of Pyruvate dehydrogenase can be caused by genetic origin most commonly linked to a mutation in the a -subunit of the mitochondrial enzyme that causes the enzyme to cease functioning. As a result of the mutation, affected individuals build up dangerous amounts of lactic acid.
The increase in the level of lactic acid occurs due to the Increased action of lactate dehydrogenase enzyme. In the absence of Pyruvate dehydrogenase enzyme, the level of blood pyruvate increases. Excess pyruvate is then converted to lactic acid by lactate dehydrogenase enzyme in a process called lactic fermentation. This results in a buildup of lactic acid in the blood leading to a condition called lactic acidosis .
Therefore, cells undergo fermentation because pyruvate cannot be metabolized to proceed into the Krebs cycle.