FIGURE 29-1 -An Object Moves in a Direction Parallel to Its Length

question 94

Multiple Choice

FIGURE 29-1
-An object moves in a direction parallel to its length with a velocity that approaches the velocity of light. The length of this object, as measured by a stationary observer,

• A) approaches infinity.
• B) approaches zero.
• C) increases slightly.
• D) decreases slightly.
• E) does not change.

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Definitions:

Phospholipids

A type of lipid molecule that is a major component of the cell membrane, consisting of a phosphate group, a glycerol backbone, and two fatty acid tails.

Plasma Membrane

The biological membrane that separates the interior of all cells from the outside environment, protecting the cell and controlling movement of substances in and out.

Hydrophobic Region

A part of a molecule that is repelled by water and tends to be nonpolar.

Phospholipids

A class of lipids that are a major component of all cell membranes, essential for cellular function.