Why Is Only One Copy of DNA Made Per Cell

question 2

Multiple Choice

Why is only one copy of DNA made per cell division cycle in eukaryotes despite the presence of multiple origins of replication?

• A)There is only one origin of replication per chromosome.
• B)The rate of elongation proceeds at a rate that allows only one copy to be made by the time the cell divides.
• C)The activity of an S-phase protein kinase controls the formation of the pre-replication complex.
• D)Primase is activated by phosphorylation only at the onset of S-phase by S-phase protein kinase.

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Definitions:

Acid Precipitation

Precipitation that is acidic as a result of both sulfur and nitrogen oxides forming acids when they react with water in the atmosphere.

Soil PH

A measure of the acidity or alkalinity of soil, affecting nutrient availability and microbial activity.

Essential Cations

Positively charged ions (like calcium, potassium, and magnesium) that are vital for the functioning of biological systems.

Biomolecules

Organic molecules, including proteins, nucleic acids, carbohydrates, and lipids, vital for the structure and function of living organisms.