Mitochondria are cellular organelles that are in charge of oxidative phosphorylation, which is the critical process of turning nutrients into adenosine triphosphate (ATP) molecules that power normal cell operations. At least hundreds of mitochondria are found in each neuron. Because nerve cells are postmitotic, any mitochondrial damage received will accumulate over time and produce malfunction. Cells die as a result of widespread mitochondrial damage because they can no longer create adequate energy.
Answer:
Negative feedback mechanism
Explanation:
Negative feedback mechanism occurs when the product or the output of a process inhibits the same process. When blood glucose level rises, body receptors stimulate beta cells in pancreas to release insulin. Insulin leads to uptake of glucose by cells, lowering the blood sugar levels. The lowered blood sugar level is again sensed by the receptors and they inhibit the secretion of insulin. Hence, insulin inhibits its own secretion by removing glucose from blood which makes it a negative feedback mechanism.
The answer is 150,000,000 years (150 million years)
Let's first convert 7,500 km to cm:
1 km = 100,000 cm
7,500 km = 7,500 · 1 km = 7,500 · 100,000 cm = 750,000,000 cm
Now, it is known that the plate is spreading at 5 cm per 1 year. Make a proportion:
5 cm : 1 year = 750,000,000 cm : x
x = 750,000,000 cm · 1 year ÷ 5 cm = 150,000,000 years
It would be primary since the writer himself is getting the information from a direct source.
The central vacuoles contain little water
