The Nucleus of a Cell

question 72

Multiple Choice

The nucleus of a cell

• A)is completely enclosed with no way in or out.
• B)contains only the DNA.
• C)is surrounded by a double membrane.
• D)it contains large proteins that form chromosomes and are the genetic material for the cell.
• E)has all of the above attributes.

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Definitions:

Vital Capacity

The maximum amount of air a person can exhale after a maximum inhalation, used to assess the health of respiratory systems.

Expiratory Reserve

The volume of air that can be forcefully exhaled after the end of a normal tidal expiration.

Intercostal Muscles

Muscles located between the ribs that aid in the process of breathing by controlling the expansion and contraction of the chest cavity.

Elevate Ribs

The action of lifting the ribs through muscle contraction, which increases the volume of the thoracic cavity to aid in inhalation.