The Weight of Air in a Bathtub (About 1/3 Cubic

question 68

Multiple Choice

The weight of air in a bathtub (about 1/3 cubic meter) is about the same as the weight of

• A)a pea.
• B)an egg.
• C)a small apple.
• D)a pound of butter.
• E)a 10-pound sack of potatoes.

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Definitions:

Electrical Charge

A fundamental property of particles that causes them to experience a force when placed in an electromagnetic field.

Sarcolemma

The cell membrane of a muscle fiber (cell), crucial for muscle contraction and signal transmission.

Muscle Fiber

A single muscle cell, known for its elongated shape, that makes up skeletal muscles and is responsible for contracting to produce movement.

Plasma Membrane

A selectively permeable lipid bilayer that encloses the cytoplasm of a cell, protecting it from the external environment.