Answer:
The two properties that determine the conduction velocity in a mammalian neuron are <em>myelination</em> and <em>voltage-gated Na+ channel concentration.</em>
Explanation:
When the electrical stimulus is applied to the membrane of the axon it produces depolarization by activating the sodium voltage-dependent channels all along the axon. Besides, there is an increase in sodium permeability. Depolarization propagates to inactivated regions adjacent to the membrane opening more sodium channels.
There is a directly proportional relationship between the fiber diameter and the conduction velocity. Mielinized fibers are thick and their conduction velocities are very fast.
The conduction velocity increases substantially in myelinated fibers because of the high concentrations of sodium channels in the Ranvier nodes that are not myelinated areas and the diameter of the axon becomes thinner.
Answer:
They obtain energy trapped and stored by plants.
Explanation:
The correct answer is C. They obtain energy trapped and stored by plants. because the sun energy is trapped through photosynthesis. animals obtain energy trapped and stored by plants when they eat plants or other animals that eat plants.
Answer:
The length of daylight and nighttime would decrease.
Explanation:
If 24 hours was decreased to 20, it would shorten night and day time.
Glycolysis occurs in the cytosol, but the Krebs cycle and electron transport chain occur inside the mitochondria. Electron carriers such as NADH produced during glycolysis and the Krebs cycle pass their electrons to the electron transport chain, which results in synthesis of a lot of ATP.
