Why Does It Appear That Each Origin Can Only Be

question 42

Multiple Choice

Why does it appear that each origin can only be activated once per cell cycle?

• A)MCM proteins are displaced from the DNA after replication and cannot reassociate with a replication origin that has already fired.
• B)The ORC is denatured after replication and cannot return to the DNA.
• C)The DNA becomes naked until the next round of cell division.
• D)MCM proteins reassociate with DNA immediately and prevent further replication from that DNA.
• E)MCM proteins bind to other proteins in the cytoplasm; together they actively inhibit further replication.

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Definitions:

Market Price

The amount of money for which a good or service is offered, sold, or bought in the market.

Perfectly Competitive

A market structure characterized by many sellers and buyers, homogeneous products, and free entry and exit, leading to price takers.

Marginal Revenue

The additional income received for selling one more unit of a good or service.

Profit-Maximizing Output

The level of production at which a company can achieve the maximum difference between total revenue and total costs, leading to the highest possible profit.