Helicase

question 52

Multiple Choice

Helicase

• A)unwinds DNA.
• B)supercoils DNA.
• C)unwinds RNA.
• D)winds RNA.

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Definitions:

Oxygen

A chemical element with symbol O, essential for most life forms on Earth, involved in cellular respiration and a component of the air.

Tracheostomy Tube

A tube that is inserted through a surgical opening in the neck into the trachea to assist with breathing.

Pneumothorax

A medical condition where air or gas collects in the chest or pleural space, causing the lung to collapse.

Expiratory Crackles

Abnormal lung sounds heard during the end of the breathing cycle, suggestive of various conditions.