The Point in the Earth's Orbit Where It Is Closest

question 69

Multiple Choice

The point in the Earth's orbit where it is closest to the Sun is called

• A) perihelion.
• B) aphelion.
• C) the plane of the ecliptic.
• D) the rotation axis.
• E) the semimajor axis.

---

Definitions:

Soma

In biology, the body of an organism as distinct from its reproductive cells; in psychology, it represents the body as perceived from within.

Depolarization

A reduction in the difference in electric charge across a cell membrane, leading to the activation of nerve or muscle cells.

Reuptake

A process by which neurotransmitters are absorbed back into a neuron after having been released into a synapse, thus terminating the transmission of signals.

Excitatory PSPs

Excitatory postsynaptic potentials are increases in potential that bring a neuron closer to the threshold for firing, facilitating the transmission of signals.