Soap and Detergent Molecules Have a Long, Hydrophobic Tail and a Polar

question 61

Multiple Choice

Soap and detergent molecules have a long, hydrophobic tail and a polar, hydrophilic head. They are sometimes referred to as bridge molecules because they allow oils and fats to be suspended and dissolved in water (which they otherwise would not be able to do) . Imagine that you are using soap to wash away dirt that is being held against your skin in an oily film.
-In this scenario, how are the soap, dirt/oil, and water arranged at the molecular level?

• A) The soap molecules encase the dirt/oil within a small droplet that has a hydrophilic exterior and a hydrophobic interior.
• B) Water and dirt/oil form covalent bonds inside a small droplet that has a soap -based outer membrane.
• C) The soap is converted into a lipid that binds to the dirt/oil while repelling the water.
• D) The soap molecules encase the dirt/oil within a small droplet that has a hydrophobic exterior and a hydrophilic interior.

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Definitions:

High Tide

The maximum height to which water in the ocean rises relative to the land in response to the gravitational pull of the Moon; also refers to the time when such high levels occur.

Low Tide

The lowest height to which water in the ocean drops relative to the land in response to the gravitational pull of the Moon; also refers to the time when such low levels occur.

Spring Tide

A condition of especially high and low tides caused when the sun, moon, and Earth are aligned, increasing the gravitational pull on the oceans.

Neap Tide

A condition of the sea where the difference between high and low tide is at its least, occurring twice a month.