The Mechanism by Which DNA Is Licensed to Replicate Only

question 58

Multiple Choice

The mechanism by which DNA is licensed to replicate only once during each S phase involves

• A)CENP-A binding to CEN DNA.
• B)MCM proteins binding only to CEN DNA.
• C)MCM proteins binding only to replicated DNA.
• D)MCM proteins binding only to nonreplicated DNA.
• E)MCM proteins binding to both replicated and nonreplicated DNA.

---

Definitions:

Aldosterone

Mineralocorticoid steroid hormone produced by the adrenal cortex with action in therenal tubule to regulate sodium and potassium balance in the blood.

Sodium and Water

Vital components for physiological functions, closely regulated to maintain fluid balance, nerve transmission, and muscle function in the body.

Excretion

The process of removing waste substances from the body, primarily performed by organs like the kidneys, liver, skin, and lungs.

Jejunostomy Feeding

The provision of nutrition directly into the jejunum (part of the small intestine) through a surgically created opening known as a jejunostomy.