One of the Early Models of DNA Structure Had the Two

question 40

Multiple Choice

One of the early models of DNA structure had the two strands of the helix interacting using ions.

• A) potassium
• B) sodium
• C) magnesium
• D) chlorine

---

Definitions:

Larynx

The voice box located in the neck, responsible for sound production and protecting the trachea against food aspiration.

Cribriform Plate

A portion of the ethmoid bone in the skull that contains small holes to allow for the passage of the olfactory nerves from the nasal cavity to the olfactory bulbs.

Olfaction

The sense of smell, a chemical sense that detects odors or scents through sensory organs in the nose.

Alveolar Process

Part of the jawbone that contains the sockets (alveoli) for teeth.