We Use Soap to Clean Ourselves Better Than We Could

question 69

Multiple Choice

We use soap to clean ourselves better than we could with water alone.Soaps contain phospholipids that are responsible for the cleansing action.Which of the following statements is the MOST likely explanation for how soaps work?

• A) Phospholipids are ions and therefore mix with both the water and oily dirt.
• B) Phospholipids are completely hydrophilic, and therefore oily dirt takes the place of the phospholipid molecules that would be dissolved in the rinse.
• C) The phospholipid tail attaches to the oily dirt while the phospholipid head interacts with the rinse water and carries the dirt (and soap) away with it.
• D) The nonpolar fatty acid chains that make up the heads of the phospholipid are hydrophilic, and thus are repelled by the water.

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Definitions:

Intersection

The point at which two or more paths, ideas, or elements meet or cross.

Axon

A fiber that extends from a neuron and transmits electrochemical impulses from that neuron to the dendrites of other neurons.

Neuron

A specialized cell of the nervous system responsible for transmitting signals throughout the body, crucial for brain function and nervous system activity.

Sleeping Practice

Refers to the habits or routines associated with achieving restorative sleep, including duration, environment, and behaviors surrounding sleep.