The Nucleotide Chains of DNA Are Held Together by ________

question 99

Multiple Choice

The nucleotide chains of DNA are held together by ________.

• A) carbon bonds
• B) hydrogen bonds
• C) ionic bonds
• D) nonpolar covalent bonds
• E) polar covalent bonds

---

Definitions:

NREM Sleep

A phase of sleep characterized by non-rapid eye movements, divided into three stages, featuring physical rest and restoration.

Heart Rate

The number of heartbeats per unit of time, typically measured in beats per minute (bpm).

Brain Activity

The various physiological processes and electrical patterns occurring in the brain associated with thought, emotions, and behavior.

Sundowning

A symptom of Alzheimer's disease and other forms of dementia characterized by increased confusion, agitation, and restlessness that occur at the end of the day, into the evening, or at night.