At a Given Point Above the Surface of Earth,the Gravitational

question 56

Multiple Choice

At a given point above the surface of Earth,the gravitational acceleration is equal to 7.8 m/s².The altitude of this point,above the surface of Earth,in km,is closest to:

• A)770
• B)970
• C)1500
• D)2000
• E)2400

---

Definitions:

Terminal Buttons

Parts of the neuron, at the end of axons, that release chemical signals from the neuron into the synapse.

Agonists

Substances or drugs that activate receptors to produce a desired biological response, often mimicking the action of naturally occurring substances.

Antagonists

Substances that block or dampen a biological response by binding to and inhibiting the function of a receptor.

Neurotransmitters

Chemical substances that transmit signals across a synapse from one neuron to another, facilitating neuronal communication.