Active Transport in the Movement of Ions and Other Water-Soluble

question 15

Multiple Choice

Active transport in the movement of ions and other water-soluble particles across cell membranes requires that the body uses its:

• A) rapid filtration.
• B) charged diffusion.
• C) a chemical pump.
• D) osmosis.

---

Definitions:

Orexin

Orexin is a neuropeptide that regulates arousal, wakefulness, and appetite, playing a crucial role in sleep-wake cycles and metabolic processes.

Appetite Hormones

Biological substances that influence appetite and food intake, such as ghrelin and leptin, playing crucial roles in hunger and satiety signals.

Hypothalamus

A small region of the brain located at the base, crucial for hormone production and regulation of essential bodily functions including temperature, thirst, and hunger.

Ghrelin

A hormone produced mainly by the stomach that stimulates appetite and promotes food intake.