Answer:
E. that area of the membrane is in the absolutely refractory period.
Explanation:
Refractory period is a period during which neuron cell cannot be stimulated (depolarized). This is why the action potential can only travel in one direction from the neuron body towards axon.
Refractory period occurs because of the inactivation of voltage-gated sodium channels (while action potential is at its peak) which cannot be open for a certain period of time. and membrane cannot be depolarized.
Answer:
The chloroplast is involved in both stages of photosynthesis.
Explanation:
The light reactions take place in the thylakoid. The dark reactions then occur outside the thylakoid. In these reactions, the energy from ATP and NADPH is used to fix carbon dioxide (CO2).
Answer:
Terrestrial planets are located closer to the sun than gas giant planets are.
Explanation:
because
That they can no longer breed together to reproduce fertile offspring.
decomposers help an ecosystem by breaking down dead plants and animals