EColi Cells Grown on ¹⁵N Medium Are Transferred to ¹⁴N

question 55

Multiple Choice

E.coli cells grown on ¹⁵N medium are transferred to ¹⁴N medium and allowed to grow for two more generations (two rounds of DNA replication) .DNA extracted from these cells is centrifuged.What density distribution of DNA would you expect in this experiment?

• A)one high-density and one low-density band
• B)one intermediate-density band
• C)one high-density and one intermediate-density band
• D)one low-density and one intermediate-density band

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Definitions:

Substitution

The act of replacing one item with another, often referring to the economic principle where consumers switch between similar goods in response to changes in price or income.

Indifference Curve

A graph representing combinations of two goods between which a consumer is indifferent, showing preferences and trade-offs.

Total Utility

The total satisfaction received from consuming a certain amount of a good or service.

Equilibrium Position

A situation where the supply and demand in the market are equal, leading to stable prices.