A New DNA Strand Elongates Only in the 5' to 3

question 45

Multiple Choice

A new DNA strand elongates only in the 5' to 3' direction because

• A) DNA polymerase begins adding nucleotides at the 5' end of the template.
• B) Okazaki fragments prevent elongation in the 3' to 5' direction.
• C) the polarity of the DNA molecule prevents addition of nucleotides at the 3' end.
• D) replication must progress toward the replication fork.
• E) DNA polymerase can only add nucleotides to the free 3' end.

---

Definitions:

Chronic Traumatic Encephalopathy (CTE)

A brain condition associated with repeated head injuries leading to long-term neurodegenerative issues.

Neural Changes

Refers to the alterations in neural pathways and synapses that occur due to growth, learning, or injury, affecting how the brain processes information.

Antidepressant Drugs

Medications used to treat depression and other conditions by adjusting levels of neurotransmitters in the brain.

SSRIs

Selective Serotonin Reuptake Inhibitors, a class of drugs commonly prescribed for depression and anxiety disorders by increasing levels of serotonin in the brain.