Answer:
The correct answer is: The action potentials peak at a higher voltage than in the body.
Explanation:
Nerve cells in the human body have a very low sodium concentration inside them, while the liquid that surrounds them is rich in this particular ion. When sodium channels in the neuron's plasma membrane are opened, this big difference in sodium concentration -also called gradient- produces a big influx of sodium ions. This rapid entering of Na+ generates a change in the voltage of the cell, because sodium is positively-charged, meaning that the inside of the neuron will become less negative - this is commonly called depolarization of the membrane. Action potentials are generated because of the sudden spike in voltage, but for them to occur, there's a certain voltage that needs to be achieved, so not every depolarization will produce an action potential.
The fact that the cell in the lab is surrounded by a lower concentration of sodium means that the influx of Na+ ions will be lower, because the gradient won't be as big, but also means that the action potential will peak at a higher voltage because the resting membrane potential wasn't as negative to begin with.
Pepsin is found in the stomach. Salivary amylase is found in the mouth. Arginase is also found in the liver. The pH of the pepsin in the stomach is acidic. The pH of the pepsin in the stomach is acidic (around 2), the mouth pH is nearly neutral, and the liver pH is basic.
Different organs of the body function well at different pH levels because enzymes exhibit their best activity in a specific pH range The enzyme that acts in the stomach can't act in the mouth due to a change in pH. The mouth has a nearly neutral pH, ranging from 6.5 to 7, and in this place, the salivary amylase works best and carries out the initial digestion of the carbohydrates. Pepsin works in stomach having a pH nearly 2.
Hence, the pepsin enzyme in the stomach works best at an acidic pH of about 2. The amylase works best at neutral pH. The liver enzyme arginase works best at a basic pH.
Learn more about the pH of different organs here.
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Answer:
the answer is B ( the stomach is more acidic thank the mouth, which is more acidic than the liver
Explanation:
The answer is B. Natural Gas.
The answer is B
Hope this helps
Answer:
Blood always moves through the body by the heart’s pumping action. The muscles in the legs assist blood flow by their action. Aiding these actions, the veins have valves in them that prevent the blood from flowing backward.
Explanation:
Answer:
Blood moves throughout the body because the heart pumps blood
Answer:
Special characteristics adapted by specific animals allow them to carry out unique abilities in order to survive. For instance, a cheetah's long tail helps it balance when running at rapid speed in order to hunt. Or an arctic woolly bear caterpillar is able to be frozen and fill it's body with an antifreeze hormone that allows it to survive temperatures below freezing.
Answer: The Leber's hereditary optic neuropathy (LHON) is caused by defective genes contained in mitochondrial DNA.
Explanation:
LHON is causes the vision loss. This occurs due to mutation in the mitochondrial DNA. The symptoms are not associated vision loss thus it is difficult to predict that which member of family was the carrier of the disease. Some people do not get completely blind. A young male is expected to develop a risk of 50% development of this disease.