The Primary Difference Between an Enhancer and a Promoter-Proximal Element

question 1

Multiple Choice

The primary difference between an enhancer and a promoter-proximal element is that _____.

• A)enhancers are transcription factors;promoter-proximal elements are DNA sequences
• B)enhancers enhance transcription;promoter-proximal elements inhibit transcription
• C)enhancers are part of the promoter;promoter-proximal elements are regulatory sequences distinct from the promoter
• D)enhancers are at considerable distances from the promoter and can be moved or inverted and still function;promoter-proximal elements are close to the promoter and their position and orientation must be maintained
• E)enhancers are DNA sequences;promoter-proximal elements are proteins that bind proximal to the promoter

---

Definitions:

Cardiovascular System

The body's system comprising the heart and blood vessels, responsible for circulating blood and oxygen throughout the body.

At Least Two Atoms

A molecule that consists of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Molecules

The smallest units of a chemical substance that can exist independently while retaining the composition and chemical properties of the substance.

Anatomical Position

The standard position in which the body is standing with feet together, arms at the side, and head, eyes, and palms facing forward, used as a reference point in anatomical nomenclature.