Answer:
The correct answer is option d.
Explanation:
An illustration of epigenetic change is a microbe, which can stimulate modifications in the host DNA, causing suppression of defenses or weakening of individual cells. Epigenetic changes modify the physical composition of DNA.
One of the examples of epigenetic change is DNA methylation. DNA methylation refers to the supplementation of methyl group, which inhibits some of the genes from getting expressed. One of the conditions of DNA methylation is cancer.
In the majority of cancer, the tumor cells go through global hypomethylation. The tumor suppressed genes seem to turn highly methylated in the conditions of cancer.
The answer is true and not false
Answer:
The correct option is B (natural killer cells).
Explanation:
Natural killer cells: They are defined as the type of cytotoxic lymphocyte which are critical to the innate immune system. The NK cells play an important role in to provide rapid response to tumor formation, virus infected cells, and acting after three days of infection.
While cancer cells die, they release some antigens, than these antigens are recognized by the immune system, and later they are presented on the immune cells which are known as antigen presenting cells. So, if these cells are absent than they increase the chances of developing malignant tumors.
The true statements are:
- Substrate level phosphorylation ocvurs during Pyruvate oxidation
- 32 ATP molecules can be made by cellular respiration but only 2 ATP molecules when oxygen is lacking
- Electrons move from protein to protein due to increasing electronegativity in the electron transport chain
- ADP is phosphorylated in the matrix of the mitochondria during oxidative phosphorylation
- ATP inhibits pyruvate dehydrogenase by feedback inhibition
<h3>What is glucose oxidation?</h3>
Glucose oxidation refers to the process in the cells in which glucose molecules are oxidized to form ATP and carbon dioxide in the presence of oxygen.
The first stage of glucose oxidation is the conversion to pyruvate.
Pyruvate is oxidized to acetylCoA.
AcetylCoA enters the citric acid cycle to produce reducing equivalents, NADH for the electron transport chain.
- The true statements about pyruvate oxidation is that there is substrate level phosphorylation during the process
- When there is sufficient oxygen, 36 ATP molecules can be made (theoretically) by cellular respiration. However, when oxygen is lacking, only 2 ATP molecules are made.
- In the electron transport chain of cellular respiration, electrons move from protein to protein due to increasing electronegativity
- During oxidative phosphorylation, ADP is phosphorylated in the matrix of the mitochondria
- Aerobic respiration can be regulated by feedback inhibition of pyruvate dehydrogenase by ATP.
Learn more about pyruvate oxidation at: brainly.com/question/22565849
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