Phospholipids Make Up Most of the Lipid Part of the Cell

question 68

Multiple Choice

Phospholipids make up most of the lipid part of the cell membrane. Since water exists on both the outside and inside of a cell, which of the following phospholipid arrangements makes the most sense?

• A) two back-to-back phospholipid layers with the polar heads facing out on both sides
• B) a single layer of phospholipids with the polar heads facing outside the cell
• C) a single layer of phospholipids with the polar heads facing inside the cell
• D) two back-to-back phospholipid layers with the non-polar tails facing out on both sides

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Definitions:

Manuscripts

Handwritten documents or texts, especially those of historical, literary, or religious significance, before the invention of printing.

Panel Paintings

Artistic works created on a flat panel made of wood, canvas, or other durable material, often used for depicting religious scenes or portraits from the Middle Ages onwards.

Painters' Guild

An association of artists, particularly painters, in a particular town or city, organized during the medieval and Renaissance periods for mutual support and the regulation of their craft.

Tommaso Portinari

A notable figure from the Italian Renaissance, best known for commissioning Hugo van der Goes' "Portinari Altarpiece."